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• Perl ENV variable contains newline and tab

  - by Michael

  Say I have an environment variable myvar myvar=\tapple\n when the following command will print out this variable perl -e 'print "$ENV{myvar}"' I will literally have \tapple\n, however, I want those control chars to be evaluated and not escaped. How would I achieve it? In the real world $ENV residing in substitution, but I hope the answer will cover that.

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• How to manipulate a string, variable in shell

  - by user558134

  Hei everyone! I have this variable in shell containing paths separated by a space: LINE="/path/to/manipulate1 /path/to/manipulate2" I want to add additional path string in the beginning of the string and as well right after the space so that the variable will have the result something like this: LINE="/additional/path1/to/path/to/manipulate1 additional/path2/to/path/to/manipulate2" Any help appreciated Thanks in advance

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• MySQL using function IN with variable

  - by misanov

  I have problem querying table with variable in IN function. SELECT s.date, (SELECT GROUP_CONCAT(value) FROM value WHERE id_value IN(s.ref_values) ) AS vals FROM stats s ORDER BY s.date DESC LIMIT 1 Where s.ref_values is '12,22,54,15'. I get only one return for first number (12). When I insert that value directly in IN(12,22,54,15) it finds all 4. So, there must be problem with using variable in IN. What am I doing wrong?

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• Troubles with a PHP session variable after form submission

  - by Psyche

  Hello, I'm setting a PHP session variable with a success message for a HTML form that I'm submitting. If there are no form errors, I redirect to the same page (using header()) and display the message from the session variable. Everything is fine until here, but if I access that page again after submission, the message is still there. Is it possible to make it appear only when I redirect after a successful submit? Thank you.

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• mysql :ordering table with day names

  - by Meko

  Hi.I am trying to get day of names with and correct order like Monday ,Tuesday.. But in my table I have records that after Monday comes Friday or I have Thursday between two Tuesday .I want to order them like Monday ,Monday ,Tuesday ,Tuesday, Wednesday so on .But I don`t want to group them. I used this query but it does not make order select Day_Name from mydb.schedule where Room_NO=(510) And Week_NO =(1) it outputs Monday Monday Tuesday Wednesday Wednesday Tuesday Thursday Thursday Thursday how can I correct it?

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• Variable table or column names.

  - by Frank Computer

  INFORMIX-SQL or any other SQL-based DB: Suppose I have an app where depending on the value of some columns, example: company.code char(3) {abc} company.brach char(2) {01} Can I construct table name "abc01" for inclusion in SELECT * FROM abc01; ? In other words, a variable table name.. same question applies for column names.

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• getting function's argument names

  - by Gotys

  in PHP Consider this function: function test($name, $age) {} I need to somehow extract the parameter names (for generating custom documentations automatically) so that I could do something like: get_func_argNames('test'); and it would return Array['name','age'] . Is this even possible in PHP ?

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• Save all file names in a directory to a vector

  - by Bobby

  I need to save all ".xml" file names in a directory to a vector. To make a long story short, I cannot use the dirent API. It seems as if C++ does not have any concept of "directories". Once I have the filenames in a vector, I can iterate through and "fopen" these files. Is there an easy way to get these filenames at runtime?

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• javascript iterate array of variables and reassign value to each variable

  - by Shanison

  Hi how should i iterate array of variables and reassign value to each variable. E.g in jQuery function test(param1, param2) { $.each([param1, param2], function (i, v) { //check if all the input params have value, else assign the default value to it if (!v) v = default_value; //this is wrong, can't use v, which is value } } How should I get the variable and assign new value in the loop? Thank you very much!

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• Doubt with PATH environment in Administrator variable and System variable?

  - by Runner

  I'm running a command line programme as administrator, but I found that PATH in System variable has higher precedence than in Administrator variable . Is that true,can someone give some documents on this?

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• Adding Names to columns in a matrix

  - by Jeff

  I have my matrix I have created, a pic found here. http://s816.photobucket.com/albums/zz83/gavakie/?action=view&current=matrix.jpg The first three column what whats being grouped by but I can had the names of those columns, how can I do that in Reporting Services?

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• Dynamic Data - Make Friendly Column Names?

  - by davemackey

  I've created a Dynamic Data project with an Entity Framework model. It works nicely. But, right now it shows all my database tables with the db column names - which aren't always the most friendly (e.g. address_line_1). How can I got about giving these more friendly column titles that will display to the end user?

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• Retrive column names of a table into a combo box

  - by syedsaleemss

  Im using c# windows form application. I have a database with many tables. Each table has several columns. I need to populate the combo box with the column names for a selected table.

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• Creating a string variable name from the value of another string

  - by NeonGlow

  In my bash script I have two variables 'CONFIG_OPTION' and 'CONFIG_VALUE' which contain string VENDOR_NAME and Default_Vendor respectively. I need to create a variable with name '$CONFIG_OPTION' ie VENDOR_NAME and assign the value in CONFIG_VALUE to newly created variable. How I can do this? I tried $CONFIG_OPTION=$CONFIG_VALUE But I am getting an error on this line as './Build.bash: line 137: VENDOR_NAME="Default_Vendor": command not found' Thanks.

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• Linux - Replacing spaces in the file names

  - by Mithun

  I have a number of files in a folder, i want to replace every space character in all file names with under scores. How can I achieve this?

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• How can make a variable (not class member) "read only" in C#

  - by devfreak

  Hi, I'm new to the C# world and I can't find a method to declare read only variable in C# (something like declaring "const" variable in c++). Is there one? I'll give you an example: ... int f() { return x; } // x is not const member ... void g() { int readOnlyVar = f(); // is there a method to declare readOnlyVar as read only or const // Some code in which I want to restrict access to readOnlyVar to read only }

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• howto, Use JQUERY .EACH() but not for a element, for a Variable

  - by nobosh

  In Javascript, I have a variable that is set to a block of text from a WYSIWYG editor. I want to use JQUERY's EACH() to find span's with the class XXXX. $( "span.foods" ).each( function() {}); But I want it to search in the variable I have, lets call if lookHere Is this possible?

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• Are Objective-C function names stored in text?

  - by thyrgle

  I don't remember where I heard about it, (I think I was searching up on how selectors worked and it ended up not being exactly the same as a callback function) and I can't confirm it. But more importantly than that, is there a way I could get a list of the function names from another application?

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• Variable Length Array

  - by corinaf

  Hello, I would like to know how a variable length array is managed (what extra variables or data structures are kept on the stack in order to have variable length arrays). Thanks a lot.

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• Pass a variable from postDispatch() to view instance in Zend Framework

  - by takeshin

  I have a controller plugin with postDispatch() hook, and there I have a $variable. How to pass this variable to the view instance? I tried Zend_Layout::getMvcInstance()->getView(), but this returns new view instance (not the application resource). The same with $bootstrap->getResource('view'). I don't want to pass it as a request param. Now, as a workaround I do it using Zend_Registry. But, is it the best way?

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• PHP Is Array Item In Variable

  - by zuk1

  I have an array and a variable, I want to check if any of the array items occur in the variable. I presume I somehow use strstr()?

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• A javascript variable used in multiple Web pages

  - by Paul

  Is there any way to define a variable that can be used in multiple Web pages? For example, a string variable stores a certain value in page A and that value can be accessed in page B. I know cookies can do it. Is there any other way?

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• are simultaneous reads of a variable thread-safe?

  - by Dasuraga

  Assuming that the variable isn't in any risk of being modified during the reads, are there any inherent problems in a variable being read by 2 or more threads at the same time?

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• Use same name for local variable and function

  - by Cdl56

  In VBA, I want to use a name for a local variable that I'd also like to use for a function name. The problem I'd that the function name formatting always changes to the local variable formatting. Any way to prevent that?

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• What does @@variable mean in Ruby?

  - by Andrew

  What are Ruby variables preceded with double at signs (@@)? My understanding of a variable preceded with an at sign is that it is an instance variable, like this in PHP: PHP version class Person { public $name; public function setName($name) { $this->name = $name; } public function getName() { return $this->name; } } Ruby equivalent class Person def set_name(name) @name = name end def get_name() @name end end What does the double at sign @@ mean, and how does it differ from a single at sign?

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