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  • which one is a faster/better sql practice?

    - by artsince
    Suppose I have a 2 column table (id, flag) and id is sequential. I expect this table to contain a lot of records. I want to periodically select the first row not flagged and update it. Some of the records on the way may have already been flagged, so I want to skip them. Does it make more sense if I store the last id I flagged and use it in my select statement, like select * from mytable where id > my_last_id order by id asc limit 1 or simply get the first unflagged row, like: select * from mytable where flagged = 'F' order by id asc limit 1 Thank you!

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  • Is there a good GUI SVN app for Mac (better than XCode)

    - by Lawrence Johnston
    Hey everybody, I'm looking for a more robust and fully featured GUI SVN manager for Mac than what is built into XCode (which works, but only as long as you don't need anything beyond the bare basics and doesn't work for versioning scripts and such created in other editors). I can use the terminal commands, but I'd really like the option of using a GUI. On windows I use TortoiseSVN and Visual SVN, which do pretty much everything I need, but as far as I'm aware there's nothing even remotely resembling those on the Mac side.

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  • A better javascript to string function?

    - by Jeff
    Before I go and create this myself, I thought I'd see if anyone knows a library that does this. I'm looking for a function that will take something in Javascript, be it an array, an associative array, a number, or even a string, and convert it to something that looks like it. For example: toString([1,2,3]) === '[1, 2, 3]' toString([[1,2], [2,4], [3,6]]) === '[[1,2], [2,4], [3,6]]' toString(23) === '23' toString('hello world') === 'hello world' toString({'one': 1, 'two': 2, 'three': 3}) === "{'one': 1, 'two': 2, 'three': 3}"

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  • A better way of representing File Attachment into a list(c#3.0)

    - by Newbie
    I have written List<Attachment> lstAttachment = new List<Attachment>(); //Check if any error file is present in which case it needs to be send if (new FileInfo(Path.Combine(errorFolder, errorFileName)).Exists) { Attachment unprocessedFile = new Attachment(Path.Combine(errorFolder, errorFileName)); lstAttachment.Add(unprocessedFile); } //Check if any processed file is present in which case it needs to be send if (new FileInfo(Path.Combine(outputFolder, outputFileName)).Exists) { Attachment processedFile = new Attachment(Path.Combine(outputFolder, outputFileName)); lstAttachment.Add(processedFile); } Working fine and is giving the expected output. Basically I am attaching the file to the list based on whether the file is present or not. I am looking for any other elegant solution than the one I have written. Reason: Want to learn differnt ways of representing the same program. I am using C#3.0 Thanks.

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  • is there a better fuction then check4winner() for my tictactoe board

    - by Hespino
    function check4Winner(){ winningCombinations = [[0,1,2],[3,4,5],[6,7,8],[0,3,6],[1,4,7],[2,5,8],[0,4,8],[2,4,6]]; for(var a = 0; a < winningCombinations.length; a++){ if(squares[winningCombinations[a][0]]==currentPlayer&& squares[winningCombinations[a][1]]==currentPlayer&& squares[winningCombinations[a][2]]==currentPlayer){ winner=true; alert(currentPlayer+ " WON!"); } }//forloop }//end check4Winner().

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  • Why is quicksort better than other sorting algorithms in practice?

    - by Raphael
    This is a repost of a question on cs.SE by Janoma. Full credits and spoils to him or cs.SE. In a standard algorithms course we are taught that quicksort is O(n log n) on average and O(n²) in the worst case. At the same time, other sorting algorithms are studied which are O(n log n) in the worst case (like mergesort and heapsort), and even linear time in the best case (like bubblesort) but with some additional needs of memory. After a quick glance at some more running times it is natural to say that quicksort should not be as efficient as others. Also, consider that students learn in basic programming courses that recursion is not really good in general because it could use too much memory, etc. Therefore (and even though this is not a real argument), this gives the idea that quicksort might not be really good because it is a recursive algorithm. Why, then, does quicksort outperform other sorting algorithms in practice? Does it have to do with the structure of real-world data? Does it have to do with the way memory works in computers? I know that some memories are way faster than others, but I don't know if that's the real reason for this counter-intuitive performance (when compared to theoretical estimates).

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  • Why are exceptions considered better than explicit error testing?

    - by Richard Keller
    I often come across heated blog posts where the author uses the argument of "exceptions vs explicit error checking" to advocate their preferred language over some other language. The general consensus seems to be that languages which make use of exceptions are inherently better / cleaner than languages which rely heavily on error checking through explicit function calls. Is the use of exceptions considered better programming practice than explicit error checking, and if so, why?

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  • What will be the better way for data retrieval on application that needs to handle limited amount of data.?

    - by Milanix
    This is not really a coding question since, I am not adding any code in here. Since, adding my code snippets itself would make this question really long. Instead, I am pretty interested in knowing a better ways for data retrieval on application that needs to handle limited amount of data which isn't updated regularly. Let's take this example: I am writing an application which gets a schedule as an XML from server. I have written a logic in order to parse XML version and update database only if the version is newer than the local version. Although the update is checked automatically/manually on daily basis based on user preference, the actual version update happens only once per few months or so. Since, this is done by some other authority which doesn't provide API but, rather inform publicly on their changes. The actual XML contains a "(n number of groups)(days in a week) (n number of schedule)" . The group is usually 6 and the number of schedule is usually 2. So basically there would usually be only around 100 strings. Now although I have used SQLite at the moment. I want to know how to make update on database. Should I show progress dialog that the application is updating and exit the app when it's done? Since, my updates are infrequent i don't think this will really harm user experience but, is there any better ways to do it? Because I don't want update to be made when user is searching which is done using database. This will cause an database already open exception. Atleast I have faced this problem before. Is it better to rather parse XML every time when user wants to view certain things or to use SQLite? Since, I make lots of use of adapter in my app to create lists, will that degrade the performance? It would really be a great help if anyone can give me better overview about it. Or may be counter argument against each. Many thanks!

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  • What is the worst programming mistake you have made?

    - by George Edison
    Most of us are not perfect. (Well, except Jon Skeet) Have you made a terrible mistake that you would like to share? The idea is that we could all learn from our mistakes and by collecting them together here, we can avoid some common ones and discover some no-so-common ones we may have overlooked. Oh, and this question is CW, of course. Edit: This question is different than http://stackoverflow.com/questions/1928002/what-is-the-worst-programming-mistake-you-have-ever-seen because we are sharing our own mistakes. Edit again: And this one http://stackoverflow.com/questions/130965/what-is-the-worst-code-youve-ever-written is different too - it asks for code. My question does not have that restriction!

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  • How can I make myself better at programming working at a shi* job ?

    - by Scrooge
    I recently graduated with an Engineering degree in Computer Science, but my employer (a mid-sized software company) is not using my logical and programming skills. I want to move to a better opportunity but how do I do that since my experience here is not going to count as much? How do I get a better programming job? The worst part is that I am still reading from books (and not writing code myself) even after I have started working. They are paying me a standard entry level Indian IT job rate but I really dont care. It's not worth it. Please advise as to how I can do something worthwhile. (I have studied C++; Core Java; Ruby On Rails ..made a couple of academic projects but no relevant practical real world experience). Just to make things easier .. let me list a few basic queries How I get better at programming without a good project at my company? Please suggest projects where I can learn to write practical code (platform doesn't matter) Best place to take part in open source development? Is it possible that I earn slightly more while I learn? (apart from my sh** job I mean) What kind of practical projects are best suited for me? (ie for an entry level programmer)

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  • Applying the Knuth-Plass algorithm (or something better?) to read two books with different length and amount of chapters in parallel

    - by user147133
    I have a Bible reading plan that covers the whole Bible in 180 days. For the most of the time, I read 5 chapters in the Old Testament and 1 or 2 (1.5) chapters in the New Testament each day. The problem is that some chapters are longer than others (for example Psalm 119 which is 7 times longer than a average chapter in the Bible), and the plan I'm following doesn't take that in count. I end up with some days having a lot more to read than others. I thought I could use programming to make myself a better plan. I have a datastructure with a list of all chapters in the bible and their length in number of lines. (I found that the number of lines is the best criteria, but it could have been number of verses or number of words as well) I then started to think about this problem as a line wrap problem. Think of a chapter like a word, a day like a line and the whole plan as a paragraph. The "length" of a word (a chapter) is the number of lines in that chapter. I could then generate the best possible reading plan by applying a simplified Knuth-Plass algorithm to find the best breakpoints. This works well if I want to read the Bible from beginning to end. But I want to read a little from the new testament each day in parallel with the old testament. Of course I can run the Knuth-Plass algorithm on the Old Testament first, then on the New Testament and get two separate plans. But those plans merged is not a optimal plan. Worst-case days (days with extra much reading) in the New Testament plan will randomly occur on the same days as the worst-case days in the Old Testament. Since the New Testament have about 180*1.5 chapters, the plan is generally to read one chapter the first day, two the second, one the third etc... And I would like the plan for the Old Testament to compensate for this alternating length. So I will need a new and better algorithm, or I will have to use the Knuth-Plass algorithm in a way that I've not figured out. I think this could be a interesting and challenging nut for people interested in algorithms, so therefore I wanted to see if any of you have a good solution in mind.

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  • What will be the better way for data retrieval on application that needs to handle limited amount of data?

    - by Milanix
    Just moved this question from Stack Overflow. Since, adding my code snippets itself would make this question really long. Instead, I am pretty interested in knowing a better ways for data retrieval on application that needs to handle limited amount of data which isn't updated regularly. Let's take this example: I am writing an application which gets a schedule as an XML from server. I have written a logic in order to parse XML version and update database only if the version is newer than the local version. Although the update is checked automatically/manually on daily basis based on user preference, the actual version update happens only once per few months or so. Since, this is done by some other authority which doesn't provide API but, rather inform publicly on their changes. The actual XML contains a "(n number of groups)(days in a week) (n number of schedule)" . The group is usually 6 and the number of schedule is usually 2. So basically there would usually be only around 100 strings. Now although I have used SQLite at the moment. I want to know how to make update on database. Should I show progress dialog that the application is updating and exit the app when it's done? Since, my updates are infrequent i don't think this will really harm user experience but, is there any better ways to do it? Because I don't want update to be made when user is searching which is done using database. This will cause an database already open exception. At least I have faced this problem before. Is it better to rather parse XML every time when user wants to view certain things or to use SQLite? Since, I make lots of use of adapter in my app to create lists, will that degrade the performance?

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  • Which is Better? The Start Screen in Windows 8 or the Old Start Menu? [Analysis]

    - by Asian Angel
    There has been quite a bit of controversy surrounding Microsoft’s emphasis on the new Metro UI Start Screen in Windows 8, but when it comes down to it which is really better? The Start Screen in Windows 8 or the old Start Menu? Tech blog 7 Tutorials has done a quick analysis to see which one actually works better (and faster) when launching applications and doing searches. Images courtesy of 7 Tutorials. You can view the results and a comparison table by visiting the blog post linked below. Windows 8 Analysis: Is the Start Screen an Improvement vs. the Start Menu? [7 Tutorials] How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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  • Data validation best practices: how can I better construct user feedback?

    - by Cory Larson
    Data validation, whether it be domain object, form, or any other type of input validation, could theoretically be part of any development effort, no matter its size or complexity. I sometimes find myself writing informational or error messages that might seem harsh or demanding to unsuspecting users, and frankly I feel like there must be a better way to describe the validation problem to the user. I know that this topic is subjective and argumentative. StackOverflow might not be the proper channel for diving into this subject, but like I've mentioned, we all run into this at some point or another. There are so many StackExchange sites now; if there is a better one, feel free to share! Basically, I'm looking for good resources on data validation and user feedback that results from it at a theoretical level. Topics and questions I'm interested in are: Content Should I be describing what the user did correctly or incorrectly, or simply what was expected? How much detail can the user read before they get annoyed? (e.g. Is "Username cannot exceed 20 characters." enough, or should it be described more fully, such as "The username cannot be empty, and must be at least 6 characters but cannot exceed 30 characters."?) Grammar How do I decide between phrases like "must not," "may not," or "cannot"? Delivery This can depend on the project, but how should the information be delivered to the user? Should it be obtrusive (e.g. JavaScript alerts) or friendly? Should they be displayed prominently? Immediately (i.e. without confirmation steps, etc.)? Logging Do you bother logging validation errors? Internationalization Some cultures prefer or better understand directness over subtlety and vice-versa (e.g. "Don't do that!" vs. "Please check what you've done."). How do I cater to the majority of users? I may edit this list as I think more about the topic, but I'm genuinely interest in proper user feedback techniques. I'm looking for things like research results, poll results, etc. I've developed and refined my own techniques over the years that users seem to be okay with, but I work in an environment where the users prefer to adapt to what you give them over speaking up about things they don't like. I'm interested in hearing your experiences in addition to any resources to which you may be able to point me.

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  • Which one is better? To have link on one page or on all pages?

    - by Ervin
    I have a website: http://www.amenajari-gradini-mures.ro and I will put links on http://www.casesigradini.ro . I would like to know which one is better from the point of view of SEO: - to have one single link on the homepage OR - to have a link on every page (about 48000 pages) ? Right now I got my link up on every page. But if it's better to have it on one page only (or maybe on few main pages ) then i'll take it out the rest. Please give some arguments for your answers. Thanks

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  • COM INTEROP Support - which is better? C# or VB

    - by dot
    I keep hearing that c# is "better" than vb... but as far as I can see, aside from syntactical differences, both compile down to the same IL. I've found some good articles by googling that explain what the differences are between the two and so I feel comfortable in "diffusing" conversations between developers arguing over vb / c#. =) But I did read an article that said vb.net 2005 had better support for com interop stuff. But i'm wondering if this is still the case? This is of interest to me because we are in the middle of redesigning an old vb6 app that communicates with some older COM components. Does anyone have recent experience with .NET and COM interop? Thanks.

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  • As an IT contractor, is it better to be a specialist or a jack-of-all-trades? [on hold]

    - by alimac83
    I've just entered the contracting market as a web developer and I've having a tough time figuring out how to plan for the future. Several developers I've worked with in the past have told me to become a specialist in one technology/area in order to secure the big contracts. However I've also heard from other sources that it's better to spread your expertise so that you're not limited in the types of work you can go for. Personally I've pretty much been involved in both back and front-end technologies during the course of my career, with slight variations in the weighting of each depending on the job. I don't really have a favourite - I enjoy it all. My question is mainly to the experienced contractors though: Do you feel specialising has helped your career or is it better to know a bit of everything? Thanks

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  • Will the MacBook Pro Early 2011 work better with Ubuntu than the Air Late 2010?

    - by AllanCaeg
    I got this late 2010 11" MacBook Air. I'm having issues with NVIDIA graphics, especially with GNOME Shell. I'm thinking about selling this to switch to the new MacBook Pro, particularly the entry level 13" (see specs here), because of the Intel HD Graphics 3000. I assume that it will be more FOSS-friendly. I just want to point out that there are non-negotiable reasons why I'm keeping an Apple hardware at the moment, so let's keep this on topic. Will the MacBook Pro Early 2011 work better with Ubuntu than the Air Late 2010? Any other factors than the graphics hardware? Should we expect better NVIDIA graphics anytime soon?

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  • In terms of SEO, is it better to have a URL broken down by folder, or with dashed names?

    - by VictorKilo
    I am creating a friendly url interpreter for my website. I have read dozens of similar topics on this site, but none that seem to address my particular situation. What I want to know is if it's better to have: A well broken down URL where each category is represented by a folder domain.com/1036/OR/Lane/Lowell/Wetleau-Subdivision -OR- A URL which groups all of the categories and terms together domain.com/1036/Wetleau-Subdivision-Lowell-OR-Lane I am asking only in terms of what is best for SEO, not necessarily human readability. My thinking is that it may be better to group them all together like they are in the second example. My reasoning being that all of those terms represent the page and are more likely to draw a result. I am a complete SEO nub though, and I crave some expert guidance. Thank you in advance for any help given.

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  • I believe my solution is better than my boss's, so should I ignore him?

    - by mahen23
    I'm working with php and sql. I think that my method of implementing functions is better than what my boss proposes. Just now he explained me how to do a check on a list of email addresses, and I do not like his idea. I proposed mine which is better and quicker to implement, but he disagreed. Now I think I will go ahead and implement my idea, because his idea was not clear enough to me. Do you think he will be mad?

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  • How to find the worst performing queries in MS SQL Server 2008?

    - by Thomas Bratt
    How to find the worst performing queries in MS SQL Server 2008? I found the following example but it does not seem to work: SELECT TOP 5 obj.name, max_logical_reads, max_elapsed_time FROM sys.dm_exec_query_stats a CROSS APPLY sys.dm_exec_sql_text(sql_handle) hnd INNER JOIN sys.sysobjects obj on hnd.objectid = obj.id ORDER BY max_logical_reads DESC Taken from: http://www.sqlservercurry.com/2010/03/top-5-costly-stored-procedures-in-sql.html

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