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  • I'm looking for a blend mode that gives 'realistic' paint colors. (Subtractive)

    - by almosnow
    I've been looking for a blend mode to (well ...) blend two RGB pixels in order to build colors in the samw way that a painter builds them (i.e: subtractive). Here are quick examples of the type of results that I'm expecting: CYAN + MAGENTA = BLUE CYAN + YELLOW = GREEN MAGENTA + YELLOW = RED RED + YELLOW = ORANGE RED + BLUE = PURPLE YELLOW + BLUE = GREEN I'm looking for a formula, like: dest_red = first_red + second_red; dest_green = first_green + second_green; dest_blue = first_blue + second_blue; I've tried with the commonly used 'multiply' formula but it doesn't work; I've tried with custom made formulas but I'm still not able to 'crack' how it should work. And I know already a lot of color theory so please refrain from answers like: Check this link: http://the_difference_betweeen_additive_and_subtractive_lightning.html

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  • How to set the background color of new activity after clicking tabs

    - by androidProgrammer
    Hi, I am switching activities on tab clicks and successful at this. But, in one of my Activity class I am doing the following: ` public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); } main.xml has the following: android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#BDBDBD" > I want to change the background of this layout only and I want tabs to their as it is. But with the currentandroid:layout_height="fill_parent"in main.xml my background is overwriting the tabs which means I am unable to see tabs. and If I makeandroid:layout_height="wrap_content"` I cannot see any change taking and tabs are still their. Please help.

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  • Social Business Forum Milano: Day 1

    - by me
    div.c50 {font-family: Helvetica;} div.c49 {position: relative; height: 0px; overflow: hidden;} span.c48 {color: #333333; font-size: 14px; line-height: 18px;} div.c47 {background-color: #ffffff; border-left: 1px solid rgba(0, 0, 0, 0.098); border-right: 1px solid rgba(0, 0, 0, 0.098); background-clip: padding-box;} div.c46 {color: #666666; font-family: arial, helvetica, sans-serif; font-weight: normal} span.c45 {line-height: 14px;} div.c44 {border-width: 0px; font-family: arial, helvetica, sans-serif; margin: 0px; outline-width: 0px; padding: 0px 0px 10px; vertical-align: baseline} div.c43 {border-width: 0px; margin: 0px; outline-width: 0px; padding: 0px 0px 10px; vertical-align: baseline;} p.c42 {color: #666666; font-family: arial, helvetica, sans-serif} span.c41 {line-height: 14px; font-size: 11px;} h2.c40 {font-family: arial, helvetica, sans-serif} p.c39 {font-family: arial, helvetica, sans-serif} span.c38 {font-family: arial, helvetica, sans-serif; font-size: 80%; font-weight: bold} div.c37 {color: #999999; font-size: 14px; font-weight: normal; line-height: 18px} div.c36 {background-clip: padding-box; background-color: #ffffff; border-bottom: 1px solid #e8e8e8; border-left: 1px solid rgba(0, 0, 0, 0.098); border-right: 1px solid rgba(0, 0, 0, 0.098); cursor: pointer; margin-left: 58px; min-height: 51px; padding: 9px 12px; position: relative; z-index: auto} div.c35 {background-clip: padding-box; background-color: #ffffff; border-bottom: 1px solid #e8e8e8; border-left: 1px solid rgba(0, 0, 0, 0.098); border-right: 1px solid rgba(0, 0, 0, 0.098); cursor: pointer; margin-left: 58px; min-height: 51px; padding: 9px 12px; position: relative} div.c34 {overflow: hidden; font-size: 12px; padding-top: 1px;} ul.c33 {padding: 0px; margin: 0px; list-style-type: none; opacity: 0;} li.c32 {display: inline;} a.c31 {color: #298500; text-decoration: none; outline-width: 0px; font-size: 12px; margin-left: 8px;} a.c30 {color: #999999; text-decoration: none; outline-width: 0px; font-size: 12px; float: left; margin-right: 2px;} strong.c29 {font-weight: normal; color: #298500;} span.c28 {color: #999999;} div.c27 {font-family: arial, helvetica, sans-serif; margin: 0px; word-wrap: break-word} span.c26 {border-width: 0px; width: 48px; height: 48px; border-radius: 5px 5px 5px 5px; position: absolute; top: 12px; left: 12px;} small.c25 {font-size: 12px; color: #bbbbbb; position: absolute; top: 9px; right: 12px; float: right; margin-top: 1px;} a.c24 {color: #999999; text-decoration: none; outline-width: 0px; font-size: 12px;} h3.c23 {font-family: arial, helvetica, sans-serif} span.c22 {font-family: arial, helvetica, sans-serif} div.c21 {display: inline ! important; font-weight: normal} span.c20 {font-family: arial, helvetica, sans-serif; font-size: 80%} a.c19 {font-weight: normal;} span.c18 {font-weight: normal;} div.c17 {font-weight: normal;} div.c16 {margin: 0px; word-wrap: break-word;} a.c15 {color: #298500; text-decoration: none; outline-width: 0px;} strong.c14 {font-weight: normal; color: inherit;} span.c13 {color: #7eb566; text-decoration: none} span.c12 {color: #333333; font-family: arial, helvetica, sans-serif; font-size: 14px; line-height: 18px} a.c11 {color: #999999; text-decoration: none; outline-width: 0px;} span.c10 {font-size: 12px; color: #999999; direction: ltr; unicode-bidi: embed;} strong.c9 {font-weight: normal;} span.c8 {color: #bbbbbb; text-decoration: none} strong.c7 {font-weight: bold; color: #333333;} div.c6 {font-family: arial, helvetica, sans-serif; font-weight: normal} div.c5 {font-family: arial, helvetica, sans-serif; font-size: 80%; font-weight: normal} p.c4 {font-family: arial, helvetica, sans-serif; font-size: 80%; font-weight: normal} h3.c3 {font-family: arial, helvetica, sans-serif; font-weight: bold} span.c2 {font-size: 80%} span.c1 {font-family: arial,helvetica,sans-serif;} Here are my impressions of the first day of the Social Business Forum in Milano A dialogue on Social Business Manifesto - Emanuele Scotti, Rosario Sica The presentation was focusing on Thesis and Anti-Thesis around Social Business My favorite one is: Peter H. Reiser ?@peterreiser social business manifesto theses #2: organizations are conversations - hello Oracle Social Network #sbf12 Here are the Thesis (auto-translated from italian to english) From Stress to Success - Pragmatic pathways for Social Business - John Hagel John Hagel talked about challenges of deploying new social technologies. Below are some key points participant tweeted during the session. 6hRhiannon Hughes ?@Rhi_Hughes Favourite quote this morning 'We need to strengthen the champions & neutralise the enemies' John Hagel. Not a hard task at all #sbf12 Expand Reply Retweet Favorite 8hElena Torresani ?@ElenaTorresani Minimize the power of the enemies of change. Maximize the power of the champions - John Hagel #sbf12 Expand Reply Retweet Favorite 8hGaetano Mazzanti ?@mgaewsj John Hagel change: minimize the power of the enemies #sbf12 Expand Reply Retweet Favorite 8hGaetano Mazzanti ?@mgaewsj John Hagel social software as band-aid for poor leadtime/waste management? mmm #sbf12 Expand Reply Retweet Favorite 8hElena Torresani ?@ElenaTorresani "information is power. We need access to information to get power"John Hagel, Deloitte &Touche #sbf12http://instagr.am/p/LcjgFqMXrf/ View photo Reply Retweet Favorite 8hItalo Marconi ?@italomarconi Information is power and Knowledge is subversive. John Hagel#sbf12 Expand Reply Retweet Favorite 8hdanielce ?@danielce #sbf12 john Hagel: innovation is not rational. from Milano, Milano Reply Retweet Favorite 8hGaetano Mazzanti ?@mgaewsj John Hagel: change is a political (not rational) process #sbf12 Expand Reply Retweet Favorite Enterprise gamification to drive engagement - Ray Wang Ray Wang did an excellent speech around engagement strategies and gamification More details can be found on the Harvard Business Review blog Panel Discussion: Does technology matter? Understanding how software enables or prevents participation Christian Finn, Ram Menon, Mike Gotta, moderated by Paolo Calderari Below are the highlights of the panel discussions as live tweets: 2hPeter H. Reiser ?@peterreiser @cfinn Q: social silos: mega trend social suites - do we create social silos + apps silos + org silos ... #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser @cfinn A: Social will be less siloed - more integrated into application design. Analyatics is key to make intelligent decisions #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser @MikeGotta - A: its more social be design then social by layer - Better work experience using social design. #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser Ram Menon: A: Social + Mobile + consumeration is coming together#sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser Q: What is the evolution for social business solution in the next 4-5 years? #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser @cfinn Adoption: A: User experience is king - no training needed - We let you participate into a conversation via mobile and email#sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser @MikeGotta A:Adoption - how can we measure quality? Literacy - Are people get confident to talk to a invisible audience ? #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser Ram Meno: A:Adoption - What should I measure ? Depend on business goal you want to active? #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser Q: How can technology facilitate adoption #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser #sbf12 @cfinn @mgotta Ram Menon at panel discussion about social technology @oraclewebcenter http://pic.twitter.com/Pquz73jO View photo Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser Ram Menon: 100% of data is in a system somewhere. 100% of collective intelligence is with people. Social System bridge both worlds Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser #sbf12 @MikeGotta Adoption is specific to the culture of the company Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser @cfinn - drive adoption is important @MikeGotta - activity stream + watch list is most important feature in a social system #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser @MikeGotta Why just adoption? email as 100% adoption? #sbf12 Expand Reply Delete Favorite 2hPeter H. Reiser ?@peterreiser @MikeGotta Ram Menon respond: there is only 1 questions to ask: What is the adoption? #sbf12 @socialadoption you like this ? #sbf12 Expand Reply Delete Favorite 3hPeter H. Reiser ?@peterreiser @MikeGotta - just replacing old technology (e.g. email) with new technology does not help. we need to change model/attitude #sbf12 Expand Reply Delete Favorite 3hPeter H. Reiser ?@peterreiser Ram Menon: CEO mandated to replace 6500 email aliases with Social Networking Software #sbf12 Expand Reply Delete Favorite 3hPeter H. Reiser ?@peterreiser @MikeGotta A: How to bring interface together #sbf12 . Going from point tools to platform, UI, Architecture + Eco-system is important Expand Reply Delete Favorite 3hPeter H. Reiser ?@peterreiser Q: How is technology important in Social Business #sbf12 A:@cfinn - technology is enabler , user experience -easy of use is important Expand Reply Delete Favorite 3hPeter H. Reiser ?@peterreiser @cfinn particiapte in panel "Does technology matter? Understanding how software enables or prevents participation" #sbf #webcenter

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  • Code Golf: Leibniz formula for Pi

    - by Greg Beech
    I recently posted one of my favourite interview whiteboard coding questions in "What's your more controversial programming opinion", which is to write a function that computes Pi using the Leibniz formula. It can be approached in a number of different ways, and the exit condition takes a bit of thought, so I thought it might make an interesting code golf question. Shortest code wins! Given that Pi can be estimated using the function 4 * (1 - 1/3 + 1/5 - 1/7 + ...) with more terms giving greater accuracy, write a function that calculates Pi to within 0.00001. Edit: 3 Jan 2008 As suggested in the comments I changed the exit condition to be within 0.00001 as that's what I really meant (an accuracy 5 decimal places is much harder due to rounding and so I wouldn't want to ask that in an interview, whereas within 0.00001 is an easier to understand and implement exit condition). Also, to answer the comments, I guess my intention was that the solution should compute the number of iterations, or check when it had done enough, but there's nothing to prevent you from pre-computing the number of iterations and using that number. I really asked the question out of interest to see what people would come up with.

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  • What are basic programs like, recursion, Fibonacci, small trick programs?

    - by Mike
    This question may seem daft (I'm a new to 'programming' and should probably stop if this is the type of question I'm required to ask)... What are: "basic programs like, recursion, fibonacci, factorial, string manipulation, small trick programs"? I've recently read Coding Horror - the non programmer and followed the links to Kegel and How to get hired. Then I delved through some similar questions here (hence the block quote) and I realised that as a fully fledged non-programmer I probably wouldn't know if I knew recursion (or any of the others) because I wouldn't know what it looked like, or why it was used, and what the results would look like after it was used. I suppose I'm trying to get a picture of "the basics". What the principles are and why we learn them - where they'll be used and what result/s your looking for. If they'll be used as an interview question during my first interview sometime in 2020 I would like to look less ignorant than those 199 out of 200 who just don't know the how, or the why, of programming. As always...I'll get my coat. Thanks Mike

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  • Automatic .NET code, nhibernate session, and LINQ datacontext clean-up?

    - by AverageJoe719
    Hi all, in my goal to adopt better coding practices I have a few questions in general about automatic handling of code. I have heard different answers both from online and talking with other developers/programmers at my work. I am not sure if I should have split them into 3 questions, but they all seem sort of related: 1) How does .NET handle instances of classes and other code things that take up memory? I recently found out about using the factory pattern for certain things like service classes so that they are only instantiated once in the entire application, but then I was told that '.NET handles a lot of that stuff automatically when mentioning it.' 2) How does Nhibernate's session handle automatic clean-up of un-used things? I've seen some say that it is great at handling things automatically and you should just use a session factory and that's it, no need to close it. But I have also read and seem many examples where people close the hibernate session. 3) How does LINQ's datacontext handle this? Most of the time I never .disposed my datacontext's and the app didn't see to take a performance hit (though I am not running anything super intensively), but it seems like most people recommend disposing of your datacontext after you are done with it. However, I have seen many many code examples where the dispose method is never called. Also in general I found it kind of annoying that you couldn't access even one-deep child related objects after disposing of the datacontext unless you explicity also grabbed them in the query. Thanks all. I am loving this site so far, I kind of get lost and spend hours just reading things on here. =)

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  • Learning libraries without books or tutorials

    - by Kawili-wili
    While many ask questions about where to find good books or tutorials, I'd like to take the opposite tack. I consider myself to be an entry-level programmer ready to move up to mid-level. I have written code in c, c++, c#, perl, python, clojure, vb, and java, so I'm not completely clueless. Where I see a problem in moving to the next level is learning to make better use of the literally hundreds upon hundreds of libraries available out there. I seem paralyzed unless there is a specific example in a book or tutorial to hand-hold me, yet I often read in various forums where another programmer attempts to assist with a question. He/she will look through the docs or scan the available classes/methods in their favorite IDE and seem to grok what's going on in a relatively short period of time, even if they had no previous experience with that specific library or function. I yearn to break the umbilical chord of constantly spending hour upon hour searching and reading, searching and reading, searching and reading. Many times there is no book or tutorial, or if there is, the discussion glosses over my specific needs or the examples shown are too far off the path for the usage I had in mind or the information is outdated and makes use of deprecated components or the library itself has fallen out of mainstream, yet is still perfectly usable (but no docs, books, or tutorials to hand-hold). My question is: In the absence of books or tutorials, what is the best way to grok new or unfamiliar libraries? I yearn to slicken the grok path so I can get down to the business of doing what I love most -- coding.

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  • How do I stop Chrome from yellowing my site's input boxes?

    - by davebug
    Among other text and visual aids on a form submission, post-validation, I'm coloring my input boxes red to signify the interactive area needing attention. On Chrome (and for Google Toolbar users) the auto-fill feature re-colors my input forms yellow. Here's the complex issue: I want auto-complete allowed on my forms, as it speeds users logging in. I am going to check into the ability to turn the autocomplete attribute to off if/when there's an error triggered, but it is a complex bit of coding to programmatically turn off the auto-complete for the single effected input on a page. This, to put it simply, would be a major headache. So to try to avoid that issue, is there any simpler method of stopping Chrome from re-coloring the input boxes? [edit] I tried the !important suggestion below and it had no effect. I have not yet checked Google Toolbar to see if the !important attribute woudl work for that. As far as I can tell, there isn't any means other than using the autocomplete attribute (which does appear to work).

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  • Do you ever make a code change and just test rather than trying to fully understand the change you'v

    - by Clay Nichols
    I'm working in a 12 year old code base which I have been the only developer on. There are times that I'll make a a very small change based on an intuition (or quantum leap in logic ;-). Usually I try to deconstruct that change and make sure I read thoroughly the code. However sometimes, (more and more these days) I just test and make sure it had the effect I wanted. (I'm a pretty thorough tester and would test even if I read the code). This works for me and we have surprisingly (compared to most software I see) few bugs escape into the wild. But what I'm wondering is whether this is just the "art" side of coding. Yes, in an ideal world you would exhaustively read every bit of code that your change modified, but I in practice, if you're confident that it only affects a small section of code, is this a common practice? I can obviously see where this would be a disastrous approach in the hands of a poor programmer. But then, I've seen programmers who ostensibly are reading the code and break stuff left and right (in their own code based which only they have been working on).

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  • A question of style/readability regarding the C# "using" statement

    - by Charles
    I'd like to know your opinion on a matter of coding style that I'm on the fence about. I realize there probably isn't a definitive answer, but I'd like to see if there is a strong preference in one direction or the other. I'm going through a solution adding using statements in quite a few places. Often I will come across something like so: { log = new log(); log.SomeProperty = something; // several of these log.Connection = new OracleConnection("..."); log.InsertData(); // this is where log.Connection will be used ... // do other stuff with log, but connection won't be used again } where log.Connection is an OracleConnection, which implements IDisposable. The neatnik in me wants to change it to: { log = new log(); using (OracleConnection connection = new OracleConnection("...")) { log.SomeProperty = something; log.Connection = conn; log.InsertData(); ... } } But the lover of brevity and getting-the-job-done-slightly-faster wants to do: { log = new log(); log.SomeProperty = something; using (log.Connection = new OracleConnection("...")) log.InsertData(); ... } For some reason I feel a bit dirty doing this. Do you consider this bad or not? If you think this is bad, why? If it's good, why?

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  • C++11 decltype requires instantiated object

    - by snipes83
    I was experimenting a little with the C++11 standard and came up with this problem: In C++11 you can use auto and decltype to automatically get return type for a function as, for example the begin() and end() functions below: #include <vector> template <typename T> class Container { private: std::vector<T> v; public: auto begin() -> decltype(v.begin()) { return v.begin(); }; auto end() -> decltype(v.end()) { return v.end(); }; }; My problem here is that I have to declare the private vector<T> v before the public declarations which is against my coding style. I would like to declare all my private members after my public members. You have to declare the vector before the function declaration because the expression in decltype is a call to vector member function begin() and requires an instance of the object. Is there a way around this?

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  • Blurry UILabel as programmatic subview of UITableViewCell contentView

    - by Alex Reynolds
    I am adding a UILabel instance as a subview of my custom UITableViewCell instance's contentView. When I select the cell, the row is highlighted blue, except for the background of the label. The label text is sharp. When I set the label and content view backgroundColor property to [UIColor clearColor], the label text becomes blurry. How do I set the label background color to be clear, to allow the row highlight to come through, while still keeping the label text sharp? One suggestion I read elsewhere was to round the label's frame values, but this did not have any effect. CODE Here is a snippet of my custom UITableViewCell subview's -setNeedsLayout method: UILabel *_objectTitleLabel = [[UILabel alloc] initWithFrame:CGRectNull]; _objectTitleLabel.text = [self.awsObject cleanedKey]; _objectTitleLabel.font = [UIAppDelegate defaultObjectLabelFont]; _objectTitleLabel.highlightedTextColor = [UIColor clearColor]; //[UIAppDelegate defaultLabelShadowTint]; _objectTitleLabel.backgroundColor = [UIColor clearColor]; //[UIAppDelegate defaultWidgetBackgroundTint]; _objectTitleLabel.frame = CGRectMake( kCellImageViewWidth + 2.0 * self.indentationWidth, 0.5 * (self.tableView.rowHeight - 1.5 * kCellLabelHeight) + kCellTitleYPositionNudge, contentViewWidth, kCellLabelHeight ); _objectTitleLabel.frame = CGRectIntegral(_objectTitleLabel.frame); _objectTitleLabel.tag = kObjectTableViewCellTitleSubviewType; //NSLog(@"_objectTitleLabel: %@", NSStringFromCGRect(_objectTitleLabel.frame)); [self.contentView addSubview:_objectTitleLabel]; [_objectTitleLabel release], _objectTitleLabel = nil; ... self.contentView.backgroundColor = [UIAppDelegate defaultWidgetBackgroundTint]; self.contentView.clearsContextBeforeDrawing = YES; self.contentView.autoresizesSubviews = YES; self.contentView.clipsToBounds = YES; self.contentView.contentMode = UIViewContentModeRedraw;

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  • if (i == 2) or if (2 == i) ?

    - by Maroloccio
    I usually use if (i == 2) in preference to if (2 == i) On occasion, I would switch things around when writing xUnit-type tests from scratch so as to follow the assertion convention of "expected" preceding "actual". When adding to existing unit tests, I always follow the style I find. No matter what, I always try to keep things consistent. Today I checked out some code with a lot of "if (2 == i)" and started wondering: which style is more "popular" nowadays? is popularity language-dependent? The latter probably because I am aware of why the "if (2 == i)" became common in the first place (C heritage) and because I see some languages go as far as disallowing assignments within conditions (e.g. Python). I thought about downloading some sources: apt-get source linux-source eclipse openoffice.org expanding them and performing a quick grep: grep --color --include=*.java --include=*.c -ERI \ "if[[:space:]]*\([[:space:]]*[[:digit:]]+[[:space:]]==" . or creating a quick "poll": http://goo.gl/mod/ciMF after a bit of searching and asking around, I am still not sure. So I am asking you: which way to go?

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  • Is there a concise way to map a string to an enum in Objective-C?

    - by zekel
    I have a string I want to parse and return an equivalent enum. I need to use the enum type elsewhere, and I think I like how I'm defining the class. The problem is that I don't know a good way to check the string against the enum values without being redundant about the order of the enums. typedef enum { ZZColorRed, ZZColorGreen, ZZColorBlue, } ZZColorType; - (ZZColorType)parseColor:(NSString *)inputString { // inputString will be @"red", @"green", or @"blue" (trust me) // how can I turn that into ZZColorRed, etc. without // redefining their order like this? NSArray *colors = [NSArray arrayWithObjects:@"red", @"green", @"blue", nil]; return [colors indexOfObject:inputString]; } In Python, I'd probably do something like the following, although to be honest I'm not in love with that either. ## maps url text -> constant string RED_CONSTANT = 1 BLUE_CONSTANT = 2 GREEN_CONSTANT = 3 TYPES = { 'red': RED_CONSTANT, 'green': GREEN_CONSTANT, 'blue': BLUE_CONSTANT, } def parseColor(inputString): return TYPES.get(inputString) ps. I know there are color constants in Cocoa, this is just an example.

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  • Should I give the answer to a failed interview coding exercise?

    - by GlenH7
    We had a senior level interview candidate fail a nuance of the FizzBuzz question*. I mean, really, utterly, completely, failed the question - not even close. I even coached him through to thinking about using a loop and that 3 and 5 were really worth considering as special cases. He blew it. Just for QA purposes, I gave the same exact question to three teammates; gave them 5 minutes; and then came back to collect their pseudo-code. All of them nailed it and hadn't seen the question before. Two asked what the trick was... On a different logic exercise, the candidate showed some understanding of some of the features available within the language he chose to use (C#). So it's not as if he had never written a line of code. But his logic still stunk. My question is whether or not I should have given him the answer to the logic questions. He knew he blew them, and acknowledged it later in the interview. On the other hand, he never asked for the answer or what I was expecting to see. I know coding exercises can be used to set candidates up for failure (again, see second link from above). And I really tried to help him home in on answering the core of the question. But this was a senior level candidate and Fizz-Buzz is, frankly, ridiculously easy even with accounting for interview jitters. I felt like I should have shown him a way of solving the problem so that he could at least learn from the experience. But again, he didn't ask. What's the right way to handle that situation? *Okay, that's not the link to the actual FizzBuzz question, but it is a good P.SE discussion around FizzBuzz and links to the various aspects of it.

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  • How to explain a layperson why a developer should not be interrupted while neck-deep in coding?

    - by András Szepesházi
    If you just consider the second part of my question, "Why a developer should not be interrupted while neck-deep in coding", that has been discussed a number of times by smart people. Heck, even the co-founder of SO, Joel Spolsky, wrote a blog post about "getting in the zone" and "being knocked out of the zone" and why it takes an average of 15 minutes to achieve productivity when participating in complex, software development related tasks. So I think the why has been established. What I'm interested in is how to explain all that to somebody who doesn't know beans about Beans (khmm I mean software development). How to tell the wife, or the funny guy from accounting at the workplace, or the long time friend who pings you on Skype every 30 minutes with a "Wazzzzzzup?!", that all the interruptions have a much deeper impact on your work than the obvious 30 seconds they took from your time. Obviously you can't explain it by sentences like "I have to juggle a lot of variable names in my short term memory" unless you want to be the target of blank stares or friendly abuse. I'd like to be able to explain all that to non-developers in a way that will make them clearly understand - without being offensive, elitist or too technical.

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  • How to explain a layperson why a developer should not be interrupted while neck-deep in coding?

    - by András Szepesházi
    If you just consider the second part of my question, "Why a developer should not be interrupted while neck-deep in coding", that has been discussed a number of times by smart people. Heck, even the co-founder of SO, Joel Spolsky, wrote a blog post about "getting in the zone" and "being knocked out of the zone" and why it takes an average of 15 minutes to achieve productivity when participating in complex, software development related tasks. So I think the why has been established. What I'm interested in is how to explain all that to somebody who doesn't know beans about Beans (khmm I mean software development). How to tell the wife, or the funny guy from accounting at the workplace, or the long time friend who pings you on Skype every 30 minutes with a "Wazzzzzzup?!", that all the interruptions have a much deeper impact on your work than the obvious 30 seconds they took from your time. Obviously you can't explain it by sentences like "I have to juggle a lot of variable names in my short term memory" unless you want to be the target of blank stares or friendly abuse. I'd like to be able to explain all that to non-developers in a way that will make them clearly understand - without being offensive, elitist or too technical. EDIT: Thanks to everyone for their great insights. I've accepted EpsilonVector's answer as his analogy was the closest one to my original needs. The "falling asleep" explanation is neither offensive nor technical, almost anyone can relate to it, and the consequences of getting disturbed while falling asleep or while being in the zone are very similar: you experience frustration and you "lose" 15-20 minutes of time.

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  • What are some Java patterns well-suited for fast, algorithmic coding?

    - by Casey Chu
    I'm in college, and I've recently started competing in programming competitions with my friends. These competitions involve solving algorithmic problems quickly. It's a lot of fun, but there's one problem: I'm forced to use Java. (My teammates use Java.) Background: I'm a self-taught JavaScript programmer, and it hurts to write Java code. I find it very verbose and inflexible, and I feel slowed down when having to declare types and decide which of the eighty list data structure to use. I'm also frustrated about the lack of functional programming features and how verbose using regular expressions, arrays, and dictionaries are. As an example, consider the problem of finding the length of the longest string of consecutive characters in a given string. So the string XX22BBBBccXX222 would give 4, for the string of four Bs. In Java, I'd have to loop through and manually count characters and manually keep track of the maximum. (That's at least as far as I'm aware -- I'm not as familiar with Java as I am with JavaScript.) In JavaScript, I'd find it like this: var max = Math.max.apply(Math, str.match(/(.)\1*/g).map(function (s) { return s.length; })); Much quicker and simpler, in my book. The question: what are some Java features, techniques, or patterns well-suited for fast, algorithmic coding?

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  • Code Complete 2ed, composition and delegation.

    - by Arlukin
    Hi there. After a couple of weeks reading on this forum I thought it was time for me to do my first post. I'm currently rereading Code Complete. I think it's 15 years since the last time, and I find that I still can't write code ;-) Anyway on page 138 in Code Complete you find this coding horror example. (I have removed some of the code) class Emplyee { public: FullName GetName() const; Address GetAddress() const; PhoneNumber GetWorkPhone() const; ... bool IsZipCodeValid( Address address); ... private: ... } What Steve thinks is bad is that the functions are loosely related. Or has he writes "There's no logical connection between employees and routines that check ZIP codes, phone numbers or job classifications" Ok I totally agree with him. Maybe something like the below example is better. class ZipCode { public: bool IsValid() const; ... } class Address { public: ZipCode GetZipCode() const; ... } class Employee { public: Address GetAddress() const; ... } When checking if the zip is valid you would need to do something like this. employee.GetAddress().GetZipCode().IsValid(); And that is not good regarding to the Law of Demeter ([http://en.wikipedia.org/wiki/Law_of_Demeter][1]). So if you like to remove two of the three dots, you need to use delegation and a couple of wrapper functions like this. class ZipCode { public: bool IsValid(); } class Address { public: ZipCode GetZipCode() const; bool IsZipCodeValid() {return GetZipCode()->IsValid()); } class Employee { public: FullName GetName() const; Address GetAddress() const; bool IsZipCodeValid() {return GetAddress()->IsZipCodeValid()); PhoneNumber GetWorkPhone() const; } employee.IsZipCodeValid(); But then again you have routines that has no logical connection. I personally think that all three examples in this post are bad. Is it some other way that I haven't thougt about? //Daniel

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  • Implicit vs explicit getters/setters in AS3, which to use and why?

    - by James
    Since the advent of AS3 I have been working like this: private var loggy:String; public function getLoggy ():String { return loggy; } public function setLoggy ( loggy:String ):void { // checking to make sure loggy's new value is kosher etc... this.loggy = loggy; } and have avoided working like this: private var _loggy:String; public function get loggy ():String { return loggy; } public function set loggy ( loggy:String ):void { // checking to make sure loggy's new value is kosher etc... this.loggy = loggy; } I have avoided using AS3's implicit getters/setters partly so that I can just start typing "get.." and content assist will give me a list of all my getters, and likewise for my setters. I also dislike underscores in my code which turned me off the implicit route. Another reason is that I prefer the feel of this: whateverObject.setLoggy( "loggy's awesome new value!" ); to this: whateverObject.loggy = "loggy's awesome new value!"; I feel that the former better reflects what is actually happening in the code. I am calling functions, not setting values directly. After installing Flash Builder and the great new plugin SourceMate ( which helps to get some of the useful features that FDT is famous into FB ) I realized that when I use SourceMate's "generate getters and setters" feature it automatically sets my code up using the implicit route: private var _loggy:String; public function get loggy ():String { return loggy; } public function set loggy ( loggy:String ):void { // do whatever is needed to check to make sure loggy is an acceptable value this.loggy = loggy; } I figure that these SourceMate people must know what they are doing or they wouldn't be writing workflow enhancement plugins for coding in AS3, so now I am questioning my ways. So my question to you is: Can anyone give me a good reason why I should give up my explicit g/s ways, start using the implicit technique, and embrace those stinky little _underscores for my private vars? Or back me up in my reasons for doing things the way that I do?

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  • Which style is preferable when writing this boolean expression?

    - by Jeppe Stig Nielsen
    I know this question is to some degree a matter of taste. I admit this is not something I don't understand, it's just something I want to hear others' opinion about. I need to write a method that takes two arguments, a boolean and a string. The boolean is in a sense (which will be obvious shortly) redundant, but it is part of a specification that the method must take in both arguments, and must raise an exception with a specific message text if the boolean has the "wrong" value. The bool must be true if and only if the string is not null or empty. So here are some different styles to write (hopefully!) the same thing. Which one do you find is the most readable, and compliant with good coding practice? // option A: Use two if, repeat throw statement and duplication of message string public void SomeMethod(bool useName, string name) { if (useName && string.IsNullOrEmpty(name)) throw new SomeException("..."); if (!useName && !string.IsNullOrEmpty(name)) throw new SomeException("..."); // rest of method } // option B: Long expression but using only && and || public void SomeMethod(bool useName, string name) { if (useName && string.IsNullOrEmpty(name) || !useName && !string.IsNullOrEmpty(name)) throw new SomeException("..."); // rest of method } // option C: With == operator between booleans public void SomeMethod(bool useName, string name) { if (useName == string.IsNullOrEmpty(name)) throw new SomeException("..."); // rest of method } // option D1: With XOR operator public void SomeMethod(bool useName, string name) { if (!(useName ^ string.IsNullOrEmpty(name))) throw new SomeException("..."); // rest of method } // option D2: With XOR operator public void SomeMethod(bool useName, string name) { if (useName ^ !string.IsNullOrEmpty(name)) throw new SomeException("..."); // rest of method } Of course you're welcome to suggest other possibilities too. Message text "..." would be something like "If 'useName' is true a name must be given, and if 'useName' is false no name is allowed".

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  • #include file vs iframe or is there a better way

    - by Laurence Burke
    ok simple question about including large mostly static html and asp.net code I am using as of right now #include and I was wondering if iframes would be a better way of handling what I wish to do or is there a better way to do it. here is the current way i'm handling the includes default.aspx <head id="YafHead" runat="server"> <meta id="YafMetaDescription" runat="server" name="description" content="Yet Another Forum.NET -- A bulletin board system written in ASP.NET" /> <meta id="YafMetaKeywords" runat="server" name="keywords" content="Yet Another Forum.net, Forum, ASP.NET, BB, Bulletin Board, opensource" /> <title>Forums</title> <style type="text/css"> .sbutton { background-color:#361800; border:medium none; border-collapse:collapse; color:#FFFFFF; font-family:Tahoma,Arial,Helvetica; font-size:10px; font-weight:bold; vertical-align:middle; } </style> <link href="images/favicon.ico" type="image/ico" rel="shortcut icon" /> <link rel="stylesheet" href="navTopStyle.css" type="text/css" media="screen" /> </head> <body style="margin: 0"> <form id="form1" runat="server" enctype="multipart/form-data"> <table align="center" style="background-color: #ffffff" cellpadding="0" cellspacing="0" width="790px"> <tr> <td> <!--#include file="CComHeader.html"--> </td> </tr> <tr> <td> <YAF:Forum runat="server" ID="forum"></YAF:Forum> </td> </tr> </table> </form> </body> </html> CComHeader.html <table cellpadding="0" cellspacing="0" width="790px"> <tr> <td align="left"> <img src="images/smokechair.jpg" alt="Cigar.com" /><img src="images/cigarcomTitle.gif" alt="Cigar.com" /> </td> <td align="right"> <table width="310px" height="73px" cellpadding="0" cellspacing="0" style="padding-right: 6px"> <tr> <td width="109px" class="welcome" align="left"> Welcome to Cigar.com </td> <td width="195px" class="welcome" align="left"> <div runat="server" id="divUser"> <table cellpadding="0" cellspacing="0" align="right"> <tr> <td width="126px" align="left"> <asp:Label ID="lblUserName" CssClass="welcome" runat="server"></asp:Label></td> <td width="65px" align="left"> <a href="http://www.cigar.com/cs/languages/en-US/docs/faq.aspx">Help</a></td> </tr> </table> </div> <div runat="server" id="divGuest"> <a href="OutsideLogin.aspx">Sign In</a> | <a href="OutsideLogin.aspx">Join</a> | <a href="http://www.cigar.com/cs/languages/en-US/docs/faq.aspx">Help</a> </div> </td> </tr> <tr> <td colspan="2"> <table cellpadding="0" cellspacing="0" > <tr> <td width="234px" align="right"> <asp:DropDownList ID="ddlCriteria" runat="server"> <asp:ListItem>Posts</asp:ListItem> <asp:ListItem>Posted By</asp:ListItem> </asp:DropDownList> <asp:TextBox Width="120px" ID="txtSearch" runat="server"></asp:TextBox> </td> <td width="70px" align="center"> <asp:Button ID="btnSearch" runat="server" Text="Search" CssClass="sbutton" OnClick="btnSearch_Click" /> </td> </tr> </table> </td> </tr> </table> </td> </tr> <tr> <td colspan="2"> <!--#include file="commonTabBar.html" --> </td> </tr> </table> commonTabBar.html <%-- CommonTabBar firebugged from Cigar.com--%> <div class="CommonTabBar"> <script language="javascript"> function tabOver(e) { if (e.className != 'CommonSimpleTabStripSelectedTab') e.className = 'CommonSimpleTabStripTabHover'; } function tabOut(e) { if (e.className != 'CommonSimpleTabStripSelectedTab') e.className = 'CommonSimpleTabStripTab'; } function tabOverSub(e) { if (e.className != 'CommonSimpleTabStripSelectedTabSub') e.className = 'CommonSimpleTabStripTabHoverSub'; } function tabOutSub(e) { if (e.className != 'CommonSimpleTabStripSelectedTabSub') e.className = 'CommonSimpleTabStripTabSub'; } </script> <table border="0" cellpadding="0" cellspacing="0"> <tbody> <tr valign="middle"> <td class="CommonSimpleTabStripTab" style="padding: 0px"> &nbsp; </td> <td class="CommonSimpleTabStripTab" onmouseover="tabOver(this);" onmouseout="tabOut(this);" onclick="window.location = 'http://www.cigar.com/index.asp'"> <a style="float: right; display: block; height: 30px; line-height: 30px; padding-left: 12px; padding-right: 12px; vertical-align: middle;" href="http://www.cigar.com/index.asp"> Home</a> </td> <td class="CommonSimpleTabStripTab" onmouseover="tabOver(this); document.getElementById('ComDropDown2').style.display = 'inline';" onmouseout="tabOut(this); document.getElementById('ComDropDown2').style.display = 'none';"> <a style="float: right; display: block; height: 30px; line-height: 30px; padding-left: 12px; padding-right: 12px; vertical-align: middle;" href="http://www.cigar.com/cigars/index.asp"> Cigars</a> <div id="ComDropDown2" style="border: 1px solid rgb(71, 42, 24); margin: 28px 0px 0px; display: none; background-color: rgb(235, 230, 208); color: rgb(71, 42, 24); position: absolute; float: left; z-index: 200;" onmouseover="document.getElementById('ComDropDown2').style.display = 'inline';" onmouseout="document.getElementById('ComDropDown2').style.display = 'none';"> <ul style="margin: 0px; padding: 0px; width: 100px;"> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/index.asp'"><a href="http://www.cigar.com/cigars/index.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="BrandsLink">Brands </a> </li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/privatelabel.asp?brand=419'"> <a href="http://www.cigar.com/cigars/privatelabel.asp?brand=419" style="line-height: 25px; color: rgb(71, 42, 24);" id="SamplersLink">Aging Room </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/samplers.asp'"><a href="http://www.cigar.com/cigars/samplers.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="SamplersLink">Samplers </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/suggestions.asp'"><a href="http://www.cigar.com/cigars/suggestions.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="SuggestionsLink">Suggestions </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/DailyDeal/ccCigarDeals.asp'"><a href="http://www.cigar.com/DailyDeal/ccCigarDeals.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="SuggestionsLink">Suggestions </a></li> </ul> </div> </td> <td class="CommonSimpleTabStripTab" onmouseover="tabOver(this); document.getElementById('ComDropDown3').style.display = 'inline';" onmouseout="tabOut(this); document.getElementById('ComDropDown3').style.display = 'none';"> <a style="float: right; display: block; height: 30px; line-height: 30px; padding-left: 12px; padding-right: 12px; vertical-align: middle;" href="http://www.cigar.com/cigars/samplers.asp"> Samplers</a> <div id="ComDropDown3" style="border: 1px solid rgb(71, 42, 24); margin: 28px 0px 0px; display: none; background-color: rgb(235, 230, 208); color: rgb(71, 42, 24); position: absolute; float: left; z-index: 200;" onmouseover="document.getElementById('ComDropDown3').style.display = 'inline';" onmouseout="document.getElementById('ComDropDown3').style.display = 'none';"> <ul style="margin: 0px; padding: 0px; width: 100px;"> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/viewsamplers.asp?subcatid=samp_var'"> <a href="http://www.cigar.com/cigars/viewsamplers.asp?subcatid=samp_var" style="line-height: 25px; color: rgb(71, 42, 24);" id="Variety SamplersLink">Variety Samplers </a> </li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/viewsamplers.asp?subcatid=gift_samp'"> <a href="http://www.cigar.com/cigars/viewsamplers.asp?subcatid=gift_samp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Gift SamplersLink">Gift Samplers </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/createSampler.asp'"><a href="http://www.cigar.com/cigars/createSampler.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Custom SamplerLink">Custom Sampler </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/viewsamplers.asp?subcatid=Feat%20Samp'"> <a href="http://www.cigar.com/cigars/viewsamplers.asp?subcatid=Feat%20Samp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Featured SamplersLink">Featured Samplers </a> </li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/YouPickOffer.asp'"><a href="http://www.cigar.com/cigars/YouPickOffer.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Brand SamplersLink">U Pick 2 Offer </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/exclusiveCustomSampler.asp'"> <a href="http://www.cigar.com/cigars/exclusiveCustomSampler.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Brand SamplersLink">Gurkha Sampler </a></li> </ul> </div> </td> <td class="CommonSimpleTabStripTab" onmouseover="tabOver(this); document.getElementById('ComDropDown4').style.display = 'inline';" onmouseout="tabOut(this); document.getElementById('ComDropDown4').style.display = 'none';"> <a style="float: right; display: block; height: 30px; line-height: 30px; padding-left: 12px; padding-right: 12px; vertical-align: middle;" href="http://www.cigar.com/gifts/index.asp"> Gifts</a> <div id="ComDropDown4" style="border: 1px solid rgb(71, 42, 24); margin: 28px 0px 0px; display: none; background-color: rgb(235, 230, 208); color: rgb(71, 42, 24); position: absolute; float: left; z-index: 200;" onmouseover="document.getElementById('ComDropDown4').style.display = 'inline';" onmouseout="document.getElementById('ComDropDown4').style.display = 'none';"> <ul style="margin: 0px; padding: 0px; width: 100px;"> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/gifts/viewgifts.asp?subcatid=gift_sets'"> <a href="http://www.cigar.com/gifts/viewgifts.asp?subcatid=gift_sets" style="line-height: 25px; color: rgb(71, 42, 24);" id="Gift SetsLink">Best Sellers </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/cigars/viewsamplers.asp?subcatid=gift_samp'"> <a href="http://www.cigar.com/cigars/viewsamplers.asp?subcatid=gift_samp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Gift SamplersLink">Gift Samplers </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/accessories/index.asp'"><a href="http://www.cigar.com/accessories/index.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="AccesoriesLink">Accesories </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/club/index.asp'"><a href="http://www.cigar.com/club/index.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Cigar of the MonthLink">Cigar of the Month </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/gifts/certificates.asp'"><a href="http://www.cigar.com/gifts/certificates.asp" style="line-height: 25px; color: rgb(71, 42, 24);" id="Cigar of the MonthLink">Gift Certificates </a></li> </ul> </div> </td> <td class="CommonSimpleTabStripTab" onmouseover="tabOver(this); document.getElementById('ComDropDown5').style.display = 'inline';" onmouseout="tabOut(this); document.getElementById('ComDropDown5').style.display = 'none';"> <a style="float: right; display: block; height: 30px; line-height: 30px; padding-left: 12px; padding-right: 12px; vertical-align: middle;" href="http://www.cigar.com/accessories/index.asp"> Accessories</a> <div id="ComDropDown5" style="border: 1px solid rgb(71, 42, 24); margin: 28px 0px 0px; display: none; background-color: rgb(235, 230, 208); color: rgb(71, 42, 24); position: absolute; float: left; z-index: 200;" onmouseover="document.getElementById('ComDropDown5').style.display = 'inline';" onmouseout="document.getElementById('ComDropDown5').style.display = 'none';"> <ul style="margin: 0px; padding: 0px; width: 100px;"> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_hum'"> <a href="http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_hum" style="line-height: 25px; color: rgb(71, 42, 24);" id="HumidorsLink">Humidors </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_cutt'"> <a href="http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_cutt" style="line-height: 25px; color: rgb(71, 42, 24);" id="CuttersLink">Cutters </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_lite'"> <a href="http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_lite" style="line-height: 25px; color: rgb(71, 42, 24);" id="LightersLink">Lighters </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_case'"> <a href="http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_case" style="line-height: 25px; color: rgb(71, 42, 24);" id="CasesLink">Cases </a> </li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); " onmouseout="tabOutSub(this); " onclick="window.location = 'http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_humf'"> <a href="http://www.cigar.com/accessories/viewaccessories.asp?subcatid=acc_humf" style="line-height: 25px; color: rgb(71, 42, 24);" id="HumidificationLink">Humidification </a></li> <li class="CommonSimpleTabStripTabSub" style="margin: 0px; padding: 3px; text-align: left; list-style: none outside none;" onmouseover="tabOverSub(this); 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  • Best style for Python programs: what do you suggest?

    - by Noctis Skytower
    A friend of mine wanted help learning to program, so he gave me all the programs that he wrote for his previous classes. The last program that he wrote was an encryption program, and after rewriting all his programs in Python, this is how his encryption program turned out (after adding my own requirements). #! /usr/bin/env python ################################################################################ """\ CLASS INFORMATION ----------------- Program Name: Program 11 Programmer: Stephen Chappell Instructor: Stephen Chappell for CS 999-0, Python Due Date: 17 May 2010 DOCUMENTATION ------------- This is a simple encryption program that can encode and decode messages.""" ################################################################################ import sys KEY_FILE = 'Key.txt' BACKUP = '''\ !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNO\ PQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~ _@/6-UC'GzaV0%5Mo9g+yNh8b">Bi=<Lx [sQn#^R.D2Xc(\ Jm!4e${lAEWud&t7]H\`}pvPw)FY,Z~?qK|3SOfk*:1;jTrI''' ################################################################################ def main(): "Run the program: loads key, runs processing loop, and saves key." encode_map, decode_map = load_key(KEY_FILE) try: run_interface_loop(encode_map, decode_map) except SystemExit: pass save_key(KEY_FILE, encode_map) def run_interface_loop(encode_map, decode_map): "Shows the menu and runs the appropriate command." print('This program handles encryption via a customizable key.') while True: print('''\ MENU ==== (1) Encode (2) Decode (3) Custom (4) Finish''') switch = get_character('Select: ', tuple('1234')) FUNC[switch](encode_map, decode_map) def get_character(prompt, choices): "Gets a valid menu option and returns it." while True: sys.stdout.write(prompt) sys.stdout.flush() line = sys.stdin.readline()[:-1] if not line: sys.exit() if line in choices: return line print(repr(line), 'is not a valid choice.') ################################################################################ def load_key(filename): "Gets the key file data and returns encoding/decoding dictionaries." plain, cypher = open_file(filename) return dict(zip(plain, cypher)), dict(zip(cypher, plain)) def open_file(filename): "Load the keys and tries to create it when not available." while True: try: with open(filename) as file: plain, cypher = file.read().split('\n') return plain, cypher except: with open(filename, 'w') as file: file.write(BACKUP) def save_key(filename, encode_map): "Dumps the map into two buffers and saves them to the key file." plain = cypher = str() for p, c in encode_map.items(): plain += p cypher += c with open(filename, 'w') as file: file.write(plain + '\n' + cypher) ################################################################################ def encode(encode_map, decode_map): "Encodes message for the user." print('Enter your message to encode (EOF when finished).') message = get_message() for char in message: sys.stdout.write(encode_map[char] if char in encode_map else char) def decode(encode_map, decode_map): "Decodes message for the user." print('Enter your message to decode (EOF when finished).') message = get_message() for char in message: sys.stdout.write(decode_map[char] if char in decode_map else char) def custom(encode_map, decode_map): "Allows user to edit the encoding/decoding dictionaries." plain, cypher = get_new_mapping() for p, c in zip(plain, cypher): encode_map[p] = c decode_map[c] = p ################################################################################ def get_message(): "Gets and returns text entered by the user (until EOF)." buffer = [] while True: line = sys.stdin.readline() if line: buffer.append(line) else: return ''.join(buffer) def get_new_mapping(): "Prompts for strings to edit encoding/decoding maps." while True: plain = get_unique_chars('What do you want to encode from?') cypher = get_unique_chars('What do you want to encode to?') if len(plain) == len(cypher): return plain, cypher print('Both lines should have the same length.') def get_unique_chars(prompt): "Gets strings that only contain unique characters." print(prompt) while True: line = input() if len(line) == len(set(line)): return line print('There were duplicate characters: please try again.') ################################################################################ # This map is used for dispatching commands in the interface loop. FUNC = {'1': encode, '2': decode, '3': custom, '4': lambda a, b: sys.exit()} ################################################################################ if __name__ == '__main__': main() For all those Python programmers out there, your help is being requested. How should the formatting (not necessarily the coding by altered to fit Python's style guide? My friend does not need to be learning things that are not correct. If you have suggestions on the code, feel free to post them to this wiki as well.

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