dynamic-variables

To keep the global namespace clean, my JavaScript code is wrapped like this: (function() { /* my code */ })(); Now I have some variables declared in this scope which I want to access using a variable variable name (e.g. the name is 'something' + someVar ). In the global scope I'd simply use window['varname'] , but obviously that doesn't work. Is there a good way to do what I want? If not I could simply put those variables inside an object to use the array notation... Note: eval('varname') is not an acceptable solution. So please don't suggest that. This is a good question because this doesn't

I'm just starting out in learning Ruby and I've written a program that generates some numbers and assigns them to variables @one, @two, @three etc. The user can then specify a variable to change by inputting it's name (e.g one). I then need to do something like '@[valueofinout] = asd'. How would I do this, and is there a better way as the way I'm thinking of seems to be discouraged? I've found x = "myvar" myvar = "hi" eval(x) -> "hi" but I don't completely understand why the second line is needed. In my case would I use something like @one = "21" input = "one" input = "@" + input changeto =

I have the following function as part of a large codebase, which I inherited: function = save_function(fpath, a,b,c) save(fpath, 'a', 'b', 'c') end This function is called at the end of one script, before another script is to be executed. This way, the variable names are properly saved (bad design, I know - I didn't write this code). Now, I am making changes to the codebase, and realize that I need to store more variables in fpath . I face two options: Edit save_function to accept more inputs. This would break any other code in the codebase that also uses this function Write a save_function2(a

I am trying to create a new variable that would use other variable with dynamic name as its value. Here's what I am trying to do: I have a System.Array with two values: $Years = 2015, 2016 Another variable $Transactions has a list of various transactions. I am trying to use each of those $Years values in the following way: ForEach($Year in $Years){ New-Variable -Name "Transactions_$Year" -Value $Transactions | Where {$_.Date -like "*.$Year" Now what I would like to do (within that same ForEach-loop) is to use that $Transactions_$Year value when I am creating a another new variable, like this:

I've built a data-driven google map with different icons that get assigned to the map depending on the type of item located. So if I have 5 types of landmark, and each gets a different icon (store, library, hospital, etc.)-- what I'd like to do is generate the google icon objects dynamically. I was thinking something like this: types = array('hospital','church','library','store',etc); var i=0; while (i<=types.length) { var landmark + i = new google.maps.Icon(); landmark.image = "icon" + i + ".png"; i++; } however, as you've probably guessed, this doesn't work. I also tried using eval, like

I'm trying to create a dynamic variable in Struts2 using set tag <s:set var="myNum" value="numConst" /> <s:set var="number" value="%{getText('@xxx.CommonConstant@'+#myNum)}" /> numConst will return a dynamic value that retrieved from database. For example, if the value is NINE then number should be @xxx.CommonConstant@NINE I have set the value in my java class so that @xxx.CommonConstant@NINE will return 9 . So far, the value can be displayed with no problem in text tag if I use <s:text name="%{getText(#number)}" /> It will return 9 but it displayed incorrectly when I tried using property tag