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  • What is the worst class/variable/function name you have ever encountered

    - by Chris Noe
    Naming things well is arguably Job 1 for professional programmers. Yet we have all suffered from some bad naming choices from time to time. So just to vent a little, what are some doozies that you may have run across? Just to get things started: One of our original developers wasn't sure what to call a secondary key - on what turned out to be a primary table for this app - so he called it: DL2WhateverTheHellThatIs. Unfortunately this system generates entity mappings from the XML, and attributes defined there result in classes, methods, and constants that are referenced through-out the app. To this day it is very hard to find a source file that does not reference this, er, thing! A few actual examples: DL2WhateverTheHellThatIsBean cos = (DL2WhateverTheHellThatIsBean)itr.next(); String code = getDL2WhateverTheHellThatIs().getCode(); From from = new From("DL2WhateverTheHellThatIs"); String filter = "_dL2WhateverTheHellThatIs._code"; (Very difficult to refactor)

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  • Javascript redeclared global variable overrides old value

    - by Yousuf Haider
    I ran into an interesting issue the other day and was wondering if someone could shed light on why this is happening. Here is what I am doing (for the purposes of this example I have dumbed down the example somewhat): I am creating a globally scoped variable using the square bracket notation and assigning it a value. Later I declare a var with the same name as the one I just created above. Note I am not assigning a value. Since this is a redeclaration of the same variable the old value should not be overriden as described here: http://www.w3schools.com/js/js_variables.asp //create global variable with square bracket notation window['y'] = 'old'; //redeclaration of the same variable var y; if (!y) y = 'new'; alert(y); //shows New instead of Old The problem is that the old value actually does get overriden and in the above eg. the alert shows 'new' instead of 'old'. Why ? I guess another way to state my question is how is the above code different in terms of semantics from the code below: //create global variable var y = 'old'; //redeclaration of the same variable var y; if (!y) y = 'new'; alert(y); //shows Old

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  • Uiimport does not save variable to base workspace

    - by Tim
    I tried using uiimport to load a file to the base workspace.....It worked first time....but after trying again after a while...I wasnt seeing the variable in the base work space. I used the default variable name which is given by 'uiimport". This was the command I used: uiimport(filename) And two variables where created by default..."data" and "textdata"(which is the header)....but now when i run it is no longer saved in the base workspace I do not want to assign a variable to the uiimport like so... K = uiimport(filename) assignin(base,'green',K) I do not want to do that because My dataset has a text header and the data itself, and doing this would assign both "textdata" and "data" to "green" variable How would I be able to get the dimensions of ONLY the "data" in green and how would I pass only "data"(which is in the green variable in the workspace.."rmbr"...the green variable holds both "data" and "textdata") to another function. I was able to do all this when the uiimport automatically saved the variables in the base workspace....but somehow now it doesn't. I would appreciate any help or tips on this matter

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  • variable in variable in batch and delayed expansion

    - by rezna
    Hi, I'm trying to use variable in variable in conjunction with delayed expansion but still no luck. SETLOCAL EnableDelayedExpansion SET ERROR_COMMAND=exit /B ^!ERRORLEVEL^! This is my last try. I want to setup an ERROR_COMMAND to be called when one of the steps in batch file crashes. The command is supposed to be: IF ERRORLEVEL 1 !ERROR_COMMAND! or IF ERRORLEVEL 1 %ERROR_COMMAND% The thing is, I'm not able to find out, how to SET properly the ERROR_COMMAND variable, so that ERRORLEVEL is not evaluated at the time of assignment, but at the time of evaluating the variable Of course I can copy&paste the code all over the batch file, but using the variable just seems a bit prettier... Anyone? Thanks, Milan

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  • How to get the original variable name of variable passed to a function

    - by Acorn
    Is it possible to get the original variable name of a variable passed to a function? E.g. foobar = "foo" def func(var): print var.origname So that: func(foobar) Returns: >>foobar EDIT: All I was trying to do was make a function like: def log(soup): f = open(varname+'.html', 'w') print >>f, soup.prettify() f.close() .. and have the function generate the filename from the name of the variable passed to it. I suppose if it's not possible I'll just have to pass the variable and the variable's name as a string each time.

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  • Using xsl:variable in a xsl:foreach select statment

    - by Nefariousity
    I'm trying to iterate through an xml document using xsl:foreach but I need the select=" " to be dynamic so I'm using a variable as the source. Here's what I've tried: ... <xsl:template name="SetDataPath"> <xsl:param name="Type" /> <xsl:variable name="Path_1">/Rating/Path1/*</xsl:variable> <xsl:variable name="Path_2">/Rating/Path2/*</xsl:variable> <xsl:if test="$Type='1'"> <xsl:value-of select="$Path_1"/> </xsl:if> <xsl:if test="$Type='2'"> <xsl:value-of select="$Path_2"/> </xsl:if> <xsl:template> ... <!-- Set Data Path according to Type --> <xsl:variable name="DataPath"> <xsl:call-template name="SetDataPath"> <xsl:with-param name="Type" select="/Rating/Type" /> </xsl:call-template> </xsl:variable> ... <xsl:for-each select="$DataPath"> ... The foreach threw an error stating: "XslTransformException - To use a result tree fragment in a path expression, first convert it to a node-set using the msxsl:node-set() function." When I use the msxsl:node-set() function though, my results are blank. I'm aware that I'm setting $DataPath to a string, but shouldn't the node-set() function be creating a node set from it? Am I missing something? When I don't use a variable: <xsl:for-each select="/Rating/Path1/*"> I get the proper results. Here's the XML data file I'm using: <Rating> <Type>1</Type> <Path1> <sarah> <dob>1-3-86</dob> <user>Sarah</user> </sarah> <joe> <dob>11-12-85</dob> <user>Joe</user> </joe> </Path1> <Path2> <jeff> <dob>11-3-84</dob> <user>Jeff</user> </jeff> <shawn> <dob>3-5-81</dob> <user>Shawn</user> </shawn> </Path2> </Rating> My question is simple, how do you run a foreach on 2 different paths?

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  • Is it kEatSpeed or kSpeedEat?

    - by bobobobo
    I have a bunch of related constants that are not identical. What's the better way to name them? way #1 kWalkSpeed kRunSpeed kEatSpeed kDrinkSpeed Or, way #2 kSpeedWalk kSpeedRun kSpeedEat kSpeedDrink If we evaluate these based on readability understandability not bug prone with subtle errors due to using wrong variable name I think way #1 wins readability, they tie for understandability, and way #2 wins for not bug prone. I'm not sure how often it happens to others, but when variable names like this get long, then its easy to write kSpeedEatingWhenInAHurry when you really meant kSpeedEatingWhenInHome, especially when using autocomplete. Any perspectives?

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  • A better name for INeedSomething... ?

    - by Daniel Severin
    I was trying pick a name for an interface through which I can pass something into an object like: If the object is INeedX then SetX(some x) method will be called; If the object is INeedY then SetY(some y) method will be called; and so on. (funny as hell, I know :) ) I try to find a different name for this kind of interfaces but I can't figure this out. Does anybody have an idea how to name the INeedSomething interface ?

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  • PHP class constant string variable spanning over multiple lines

    - by ebae
    I want to have a string variable for a PHP class, which would be available to all methods. However, this variable is quite long, so I want to separate it into multiple lines. For example, $variable = "line 1" . "line 2" . "line 3"; But above doesn't work. I tried EOD, but EOD is not allowed within class. And when I declare it outside the class, I can't access the variable from within the class. What is the best way?

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  • Are variable length arrays possible with Javascript

    - by Ankur
    I want to make a variable length array in Javascript. Is this possible. A quick google search for "Javascript variable length array" doesn't seem to yield anything, which would be surprising if it were possible to do this. Should I instead have a String that I keep appending to with a separator character instead, or is there a better way to get a varible length array-like variable.

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  • LIKE operator with $variable

    - by skarama
    This is my first question here and I hope it is simple enough to get a quick answer! Basically, I have the following code: $variable = curPageURL(); $query = 'SELECT * FROM `tablename` WHERE `columnname` LIKE '$variable' ; If I echo the $variable, it prints the current page's url( which is a javascript on my page) Ultimately, what I want, is to be able to make a search for which the search-term is the current page's url, with wildcards before and after. I am not sure if this is possible at all, or if I simply have a syntax error, because I get no errors, simply no result! I tried : $query = 'SELECT * FROM `tablename` WHERE `columnname` LIKE '"echo $variable" ' ; But again, I'm probably missing or using a misplaced ' " ; etc. Please tell me what I'm doing wrong!

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  • Redeclared javascript global variable overrides old value in IE

    - by Yousuf Haider
    (creating a separate question after comments on this: http://stackoverflow.com/questions/2634410/javascript-redeclared-global-variable-overrides-old-value) I am creating a globally scoped variable using the square bracket notation and assigning it a value inside an external js file. In another js file I declare a var with the same name as the one I just created above. Note I am not assigning a value. Since this is a redeclaration of the same variable the old value should not be overriden as described here: http://www.w3schools.com/js/js_variables.asp Create 2 javascript files with the following content : Script1 //create global variable with square bracket notation window['y'] = 'old'; Script2 //redeclaration of the same variable var y; if (!y) y = 'new'; alert(y); //shows New instead of Old in IE Include these 2 files in your html file <html> <head></head> <body> <script type="text/javascript" src="my.js"></script> <script type="text/javascript" src="my2.js"></script> </body> </html> Opening this page in Firefox and Chrome alerts 'old' which is the expected behavior. However in IE 8 the page will actually alert 'new' Any ideas on why this happens on IE ?

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  • Bash: Variable substitution in variable name with default value

    - by krissi
    i have the following variables: # config file MYVAR_DEFAULT=123 MYVAR_FOO=456 #MYVAR_BAR unset # program USER_INPUT=FOO TARGET_VAR=<need to be set> If the USER_INPUT is "foo", I want TARGET_VAR to be the value of MYVAR_FOO (TARGET_VAR=456). If USER_INPUT is "bar" I want TARGET_VAR to be set to MYVAR_DEFAULT (123), because MYVAR_BAR is unset. I prefer it to be sh-compatible and as a substitution string. But it might also be bash compatible and/or in a function. I got these snippets: # Default values for variable (sh-compatible) echo ${MYVAR_FOO-$MYVAR_DEFAULT} # Uppercase (bash compatible) echo ${USER_INPUT^^} I would need something like this: TARGET_VAR="${MYVAR_${USER_INPUT^^}-$MYVAR_DEFAULT}" # or somecommand -foo "${MYVAR_${USER_INPUT^^}-$MYVAR_DEFAULT}" This is to switch a bunch of variables between multiple "profiles". In the example, FOO and BAR are profiles. New profiles should be added easily, in this example there would be an implicit profile named BAZ, too, all variables to their default values. Unfortunately it is not that easy. Do you have an idea to solve this? Thanks in advance, krissi

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  • Apache RewriteRule with a RewriteMap variable substitution for the VAL argument to environment variable

    - by Eric
    I have an Apache server that serves up binary files to an application (not a browser). The application making the request wants the HTTP Content-MD5 header in HEX format. The default and only option within Apache is Base64. If I add "ContentDigest on" to my VirtualHost, I get this header in Base64. So I wrote a perl script, md5digesthex.pl, that gives me exactly what I want: MD5 in HEX format but I'm struggling with the RewriteRule to get my server to send the result. Here is my current Rewrite recipe: RewriteEngine on RewriteMap md5inhex prg:/www/download/md5digesthex.pl RewriteCond %{REQUEST_URI} ^/download/(.*) RewriteRule ^(.*) %{REQUEST_URI} [E=HASH:${md5inhex:$1}] Header set Content-MD5 "%{HASH}e" env=HASH The problem is that I can't seem to set the HASH environment variable based on the output of the md5inhex map function. It appears this behavior is not supported and I'm at a lost as to how to formulate this...

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  • How to Use an Environment Variable as an Environment Variable Name

    - by Synetech inc.
    Hi, In my pursuit of a solution to another environment-variable/batch-file related problem, I have once again come across a problem I have visited before (but cannot for the life of me remember how, or even if I solved it). Say you have two BAT files (or one batch file and the command line). How can one pass an environment variable name to the other so that it can read the variable? The following example does not work: A.BAT: @call b.bat path B.BAT: @echo %%1% > A.BAT > %1 > B.BAT path > %1 It is easy enough to pass the environment variable name, but the callee cannot seem to use it. (I don’t remember if or how I dealt with this the last time it came up, but I suspect it required the less-than-ideal use of redirecting temporary BAT files and calling them and such.) Any ideas? Thanks.

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  • How do you name your personal libraries?

    - by Mehrdad
    I'm pretty bad with naming things. The only name I can every generically come up with is 'helper'. Say, if I have a header file that contains helping functions for manipulating paths, I tend to put it inside my "helper" directory and call it "path-helper.hpp" or something like that. Obviouslly, that's a bad naming convention. :) I want to have a consistent naming scheme for my folder (and namespace) which I can use to always refer to my own headers and libraries, but I have trouble finding names that are easy to type or remember (like boost)... so I end up calling some of them "helper" or "stdext" or whatnot, which isn't a great idea. How do you find names for your libraries that are easy to remember and easy to type, and which aren't too generic (like "helper" or "std" or "stdext" or the like)? Any suggestions on how to go about doing this?

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  • How to camel-case where consecutive words have numbers?

    - by Rob I
    Just wondering if anybody has a good convention to follow in this corner-corner-corner case. I really use Java but figured the C# folks might have some good insight too. Say I am trying to name a class where two consecutive words in the class name are numeric (note that the same question could asked about identifier names). Can't get a great example, but think of something like "IEEE 802 16 bit value". Combining consecutive acronyms is doable if you accept classnames such as HttpUrlConnection. But it seriously makes me throw up a little to think of naming the class IEEE80216BitValue. If I had to pick, I'd say that's even worse than IEEE802_16BitValue which looks like a bad mistake. For small numbers, I'd consider IEEE802SixteenBitValue but that doesn't scale that well. Anyone out there have a convention? Seems like Microsoft's naming guidelines are the only ones that describe acronym naming in enough detail to get the job done, but nobody has addressed numbers in classnames.

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  • What are industry standards and professional best practices in network hosts naming? [closed]

    - by Ivan
    Possible Duplicate: Naming convention for computers It seems an important and difficult dilemma for me how to name network hosts (routers, servers (while a server can be a router and host diverse services at the same time), virtual machines (while they host important services and can migrate), workstations and notebooks (using pc-username is not the best idea as users may change), printers & MFUs, surveillance IP cameras, etc). Are there known and accepted best practices for this task? Excuse me if there already was a similar question here (I think it probably was), I haven't found it.

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  • php claims my defined variable is undefined

    - by tedders
    My php is a little rusty but this is boggling my mind right now. I googled this and read all the stackoverflow questions I could find that looked related, but those all seemed to have legitimate undefined variables in them. That leads me to believe that mine is the same problem, but no amount of staring at the simple bit of code I have reduced this to seems to get me anywhere. Please someone give me my dunce cap and tell me what I did wrong! <?php //test for damn undefined variable error $msgs = ""; function add_msg($msg){ $msgs .= "<div>$msg</div>"; } function print_msgs(){ print $msgs; } add_msg("test"); add_msg("test2"); print_msgs(); ?> This gives me the following, maddening output: Notice: Undefined variable: msgs in C:\wamp\www\fgwl\php-lib\fgwlshared.php on line 7 Notice: Undefined variable: msgs in C:\wamp\www\fgwl\php-lib\fgwlshared.php on line 7 Notice: Undefined variable: msgs in C:\wamp\www\fgwl\php-lib\fgwlshared.php on line 10 Yes, this is supposed to be a shared file, but at the moment I have stripped it down to just what I pasted. Any ideas?

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  • Is naming a software product the same as a book legally problematic?

    - by Jake Petroules
    I came up with a name for a software product I'm developing. It's composed of two common English words put together (for example, Firefox, Silverlight, etc.). I Googled the name to see if it was being used by any other software product before committing to it. After finding none, I did notice that there is a book published around 60 years ago, by that same name. Would it be legally problematic to name my software product as such, or does it being a software product vs a book make it irrelevant? PS - I know this isn't really a programming question, but naming is related to software development, isn't it? ;) PPS - How do companies like Microsoft get away with naming things "Windows" and "Office"? Or are they just legally called "Microsoft Windows" and "Microsoft Office"? Do developer names always precede software product names? Would naming a software product "Jones Office" be illegal?

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  • Variable Scoping in a method and its persistence in C++

    - by de costo
    Consider the following public method that adds an integer variable to a vector of ints(private member) in a class in C++. KoolMethod() { int x; x = 10; KoolList.Add(x); } Vector<int>KoolList; But is this a valid addition to a vector ??? Upon calling the method, it creates a local variable. The scope of this local variable ends the moment the execution control leaves the method. And since this local variable is allocated on a stack(on the method call), any member of KoolList points to an invalid memory location in deallocated stack which may or may not contain the expected value of x. Is this an accurate description of above mechanism ?? Is there a need for creating an int in heap storage using "new" operator everytime a value needs to be added to the vector like described below ????: KoolMethod() { int *x = new int(); *x = 10; KoolList.Add(x); } Vector<int*>KoolList;

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  • Apply Button() to an element inside a variable

    - by Ben
    If have a variable data = '<div>... <button id="remember"> ... </button> ...</div>', is it possible to apply the .button(); method to a button inside that variable? I've tried the following: $('#remember', data).button(); but that doesn't work. After that i just do $(data).dialog();, which works. I've come with a workaround and that's to append the variable data to the document, call the .button() and then call the .dialog(), but appending and removing dialog's divs on the document doesn't seems right.

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