I know that some other languages, such as PHP, support a concept of "variable variable names" - that is, the contents of a string can be used as part of a variable name. I heard that this...

Jul 11, 2016 · How do I create or use a global variable inside a function? How do I use a global variable that was defined in one function inside other functions? Failing to use the global keyword where …

Set variable from another variable in Jinja Asked 15 years, 4 months ago Modified 1 year, 3 months ago Viewed 603k times

Mar 18, 2016 · I understand that the @ symbol can be used before a string literal to change how the compiler parses the string. But what does it mean when a variable name is prefixed with the @ symbol?

If you set the value of a variable inside the function, python understands it as creating a local variable with that name. This local variable masks the global variable.

Aug 16, 2010 · 4 $_ is a variable created by the system usually inside block expressions that are referenced by cmdlets that are used with pipe such as Where-Object and ForEach-Object. But it can …

Function variable for which the scope ends when function exits. Package body variables defined at the top of package and outside all functions whose scope is the session and visibility is package.

The questions wasn't 'Can a JavasScript variable start with a $?', but 'Why would a ...' . thee OP was looking for a reason to use such a naming convention. Protected question. To answer this question, …

That is, JavaScript "short-circuits" the evaluation of Boolean operators and will return the value associated with either the first non-false variable value or whatever the last variable contains.

Aug 1, 2011 · The underscore in variable names is completely optional. Many programmers use it to differentiate private variables - so instance variables will typically have an underscore prepended to …