Are there any differences between the following ways of initialization of variables? @var ||= [] @var = [] if @var.nil? @var = @var || [] Please share your way initializing a variable and state the pros & cons. ...
Hello I am trying to solve following problem: I have a system with which communication is done through SOAP (XML over http). In Jmeter I am using SOA/XML-RPC (not wsdl based webservice). I am sending one SOAP request and receiving response in vollowing tag <Prodrevision>5</Prodrevision> This number changes from time to time and goal...
I am trying to substitute output from variable to give another output. The variable i have problems with is the $apps. It gives me "syntax error: bad substitution". $appletDir is a directory with desktop shortcuts. The problem is that some shortcuts do not have the same name as the icon(png). So i need to substitute the program name wi...
Hi, I've noticed some strange code on a project I am working on - its a SLSB EJB3, and it uses a private instance variable to maintain a cache of data (it even calls it dataCache or something), with a getter/setter. For EJB2 and bellow, this was a typical EJB antipattern - SLSBs are not meant to retain state in between invocations, ther...
I wish to directly modify a variable's value outside of a method from inside it. Pointers are the way, correct? How? ...
I randomly get this error, and I can't figure out a way to fix it: the variables pane (top right) is blank, and the gdb "po" command can't print any variables. The "po" command doesn't even know about "self": The problem appears specifically for all methods in the MGMinimap class. Nowhere else. I can debug from A and see self and th...
I'd like to create something like a very basic chat application. I don't want to use a database, since it'd cause a heavy load on an already strained db. I also don't want to use a flat file, because it have a feeling that it'd become a mess or that it'll have lots of read/writes... So, I'm wondering if there is a way to have a variable...
I recently read: "The expressions (++i) and (i++) have values and side effects. The side effect is that the value in i is increased by 1. The value of (i++) is the value before the increment and the value of (++i) is the value after the increment, but whether the increment or the evaluation takes place first, is not part of C." I know t...
Does C# allow a variable that can't be modified? It's like a `const`, but instead of having to assign it a value at declaration, the variable does not have any default value, but can only be assigned a value once at runtime (EDIT: and possibly not from constructor). or is this not possible?...
Hi all, How to concatenate two variables to obtain something like this? $var = "sss"; $i = 5; ${$var.$i} = "eeee"; // I know this is not correct, What should be here echo $var5; So here i need to obtain variables $var1 $var2 $var3 $var4 ... dynamically. ...
hey okay so lets say $word = [email protected] can i make a new variable only everything upto the "@" and another everything after? ( I.E. $one = abcdefg & $two = hijk.lmn ) thanks alot ...
I am trying to make a lottery game in Java and it uses method calls instead of while loops for looping purposes. However, I cannot get an input variable( such as int bet = input.nextInt()) to be recognized as a variable for other methods. I do not know how to globalize "bet" so it can be used by all the methods instead of just in the met...
Hello, I am having a script that used unsafeWindow in FireFox, since that did not work, I have searched for another option, and found it, I am only wondering: How can I use a variable from my userscript into the unsafeWindow workaround? My code is: // ==UserScript== // @name Test // @description Test // @include http://www.google*...
Hi, I am trying to understand an other magic thing about django: it can convert strings to modules. In settings.py, INSTALLED_APPS is declared like that: INSTALLED_APPS = ( 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', ) All it contains is strings. But django will convert those strings to...
I have write the following pl/sql program and unable to dectect the error : declare variable a number; b number:=2354; begin b:=:a; end; the error in this is SP2-0552: Bind variable "A" not declared. plz help ... ...
Hi I have dozens of NSStrimgs that when the app loads I want to all be set to the same set. All of them. How can I do this without typing out every single one? Is there a shortcut method? Thanks. ...
var cur_storage_unit = $('#storage_unit').val(); $('.size_unit').change(function() { var id = $(this).attr('id'); //This is how I want it to work, but not sure how 'cur_' + id = $(this).val(); }); The user 'changes' a of class 'size_unit' and id of 'storage_unit'. I want to then set the value of 'cur_storage_unit' to the...
Hi, I have a large amount of arrays of different dimensions. However, I name them with a sequential order, say var1, var2, and so on. In order to read them, I would be interested in looping over them in something like: do i=1,n read(1,*) var<i> enddo Of course, since the arrays are of different dimensions, I cannot simply add a ...
where the local, global, static, auto, register, extern, const, volatile variables are stored ? ...
var div = $(this), ul = $("ul", div), li = $("li", ul); Please explain, what does this code do? By steps. Thanks. ...