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• Exporting an Environment Variable in Ruby

  - by wilhelmtell

  How do I export an environment variable from within a Ruby script to the parent shell? For example, implementing a naïve implementation of the /usr/bin/read utility: #!/usr/bin/ruby varname = ARGV[0] ENV[varname] = STDIN.gets # but have varname exported to the parent process

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• how to display the values of a map variable in javascript

  - by user329551

  I have a javasrcript variable var hash = { '.bmp' : 1, '.gif' : 1, '.jpeg' : 1, '.jpg' : 1, '.png' : 1, '.tif' : 1, '.tiff' : 1, }; I want to display the values (.bmp, .gif, .jpeg, .jpg, .png, .tif, .tiff) of this "hash" object in my alert message. How can I do this? Please help.

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• Putting more than one variable into a sql statement

  - by Luke

  I have constructed the following - `$format_$game_$name_$season` 4 variables with underscores between. Should this work, or will it act as one variable? THankyou

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• Grails/groovy check whethere variable is Array

  - by WaZ

  Hi I want to find out whether a variable is an array or not if (params.writtenLines == ???) much appreicated.

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• What is the '@(' doing in this Perl code?

  - by Anthony Veckey

  In this code snippet: use strict; use warnings; use Data::Dumper; my $r = [qw(testing this thing)]; print Dumper($r); foreach my $row (@({$r}) { print "$row\n"; $row .= 'mod'; } print Dumper($r); print Dumper(@({$r}); I figured out that the '(' after the '@' in the foreach is causing this not to loop correctly. I have no idea why this code even works as there is no ending parenthesis. What is this doing? It looks to be creating a new variable on the fly, but shouldn't 'use strict' have fired or something? Please help explain what that '@(' is doing and why it still runs without an ending parenthesis.

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• Counting variables per observation per month in Sas.

  - by John

  Hey guys, a quick question, I have data of the following sort: Ticker _ Date _ Fem Analyst (dummy 1 if true) AA _ 04/2001 _ 1 AA _ 04/2001 _ 1 AA _ 04/2001 _ 1 AA _ 05/2002 _ 1 AA _ 05/2002 _ 1 AA _ 07/2002 _ 0 AA _ 04/2003 _ 1 and so on.. What I want to receive is the following: Ticker _ Date _ Number of fem analyst AA _ 04/2001 _ 3 AA _ 05/2002 _ 2 AA _ 07/2002 _ 0 AA _ 04/2003 _ 1 So an easy counting algorithm that allows me to count for the number of analysts per company per month (the date is in 01/04/2002 format but I also have a month count variable which can be used too) Any ideas?

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• PHP while(variable=mysql_fetch_assoc) - explanation

  - by Petr

  Hi, I have been working with C# so this is quite strange for me: while($variable=mysql_fetch_assoc) I have not been able to look up in PHP manual how it works. I guess that in each loop it advances to next element of assoc.array. But what is this generally called in PHP? I am just not used to see '=' in loop condition.

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• Defining a color variable in vim

  - by ldigas

  When, for example, making a colorscheme, how can one define #40ffff as "UglyColor" (i.e. as a variable) ? Possible / not possible ?

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• Using static variable in android

  - by michael

  Hi, In android, is it recommend to use static variable? E.g, implement a Singleton pattern in Java, I usually do: private static A the_instance; public static A getInstance() { if (the_instance == null) { the_instance = new A(); } return the_instance; } My question is when do that get free by android JVM? Thank you.

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• Read the global variable in actionscript 2.0

  - by Rizki

  how i suppose to do to read global variable in actionscript 2.0? i've declared _global.MyVar="dummyContent"; may i write MyVar="anotherContent";? or it should _global.MyVar="anotherContent"?

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• vim variable declaration

  - by dorelal

  I added following line of code in .vimrc let g:jslint_status = 'enabled' if exists("jslint_status") echo jstlint_status else echo 'not found' endif Error message E121: Undefined variable: jstlint_status E15: Invalid expression: jstlint_status What am I doing wrong?

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• file content into unix variable with newlines

  - by Hugo

  I have a text file test.txt with the following content: text1 text2 And I want to assign the content of the file to a UNIX variable but when I do this: testvar=$(cat test.txt) echo $testvar the reult is: text1 text2 instead of text1 text2 Can someone suggest me a solution for this?

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• MSSQL variable columns name?

  - by Petr

  Hi, I am wondering why I cannot use variable column name like that: declare @a as varchar; set @a='TEST' select @a from x; Thank you

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• how can put a javascript variable in img tag

  - by ajithperuva

  I need to put a javascript variable as image source.That is my image tag should be in this format here i am adding my script document.getElementById("pricefilter").innerHTML ='' here variablename carries my image path.How can i put this in double quates.Please help to solve this

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• Require_once to variable

  - by swamprunner7

  I want to call require_once("test.php") but not display result and save it into variable like this: //pseudocode $test = require_once('test.php'); //some operations like $test = preg_replace(…); echo $test; Is it possible?

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• find the total values get in a variable in php

  - by Hmwd

  hi, i am doing a shopping cart.i had a variable $total.when i add 1st product of price 200 i get $total=200 , when i add 2nd product of price 100 i get $total=200100 when i add 3rd product of price 400 i get $total=200100400 . i want to get $total=700. how to fix this problem? please help me........ thanks, Hmwd

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• How to : Static variable in inherited class

  - by nXqd

  class B { public: static int a; } class C:B { } I want to use a variable through any inherited classes but it has problem when I declare a. B::B() { a=1; } Do I do it right ? Thanks for reading and waiting for your comments.

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• How to run a query and put the result into a variable

  - by every_answer_gets_a_point

  I am running a query from the VBA editor of Access: select max(somerow) from sometable I want to put the result of this query into a VBA variable. How do i do it?

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• Anyway to get string from variable name?

  - by hacksigal

  Say I have my class @interface Person : NSObject { NSString *name; } I need to get the name of NSString's within my class Person *person = [[Person alloc] init]; NSLog(@"Name of variable %s\n", NameofVariable(person.name));

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• how to get an xml in a variable

  - by sam

  I have a stored procedure that will return xml. I have delared a variable of type xml and trying to execute the following code declare @v xml set @v = execute get_xml @id, 33 whereas id is returned by another query. now it keeps compalinng about the following error Incorrect syntax near the keyword 'execute'.

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• How to set the env variable for PHP ?

  - by Jack

  I am using WAMP. I want to use php from the command prompt. What is the entry in PATH env variable for this ?

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• how to declare variable in POSTGRE

  - by user307880

  I try to declare a variable in a code like this, but it's doesn't work. Can you tell me what's the problem? ERROR: syntax error at or near "VARCHAR" LINE 2: p_country VARCHAR; DECLARE p_country VARCHAR; p_country : = ''; SELECT p_country;

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• Missing $ on loop variable

  - by k0re

  Hi, 1 #!/usr/bin/perl 2 use strict; 3 use warnings; 4 5 my @array = qw[a b c]; 6 foreach my($a,$b,$c) (@array) { 7 print "$a , $b , $c\n"; 8 } I receive following error: Missing $ on loop variable What is wrong? I am using: perl v5.10.1 (*) built for x86_64-linux-thread-multi

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• jquery pass dynamic variable name

  - by Alessandro

  hi function liveUpdate(fld,value,id) { $.ajax({ type: 'POST', url: 'myurl.html', data: { fld:value, 'id': id }, success: function(data){//console.log(data); } }); } i want fld to be posted as fld's value not the variable name fld? i've tried to wrap around with eval but no luck any ideas? thanks

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• Assign debug_backtrace() To a variable in PHP

  - by streetparade

  I tryed to email me debug_backtrace() but it just prints out the array. I need to assign it to a variable so that var_export can work with it. How can i do that?

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