Top "If-statement" questions

An "if" statement is a flow control structure in most programming languages that branches execution flow depending on a binary condition, generally evaluated at runtime.

Why does python use 'else' after for and while loops?

I understand how this construct works: for i in range(10): print(i) if i == 9: print("Too big - I'm giving …

python if-statement for-loop for-else
If conditions in a Makefile, inside a target

I'm trying to setup a Makefile that will search and copy some files (if-else condition) and I can't figure out …

if-statement makefile target
Using switch statement with a range of value in each case?

In Java, is it possible to write a switch statement where each case contains more than one value? For example (…

java if-statement switch-statement
How to check if a string starts with one of several prefixes?

I have the following if statement: String newStr4 = strr.split("2012")[0]; if (newStr4.startsWith("Mon")) { str4.add(newStr4); } I want it …

java string if-statement
One liner for If string is not null or empty else

I usually use something like this for various reasons throughout an application: if (String.IsNullOrEmpty(strFoo)) { FooTextBox.Text = "0"; } else { FooTextBox.…

c# if-statement isnullorempty
List comprehension with if statement

I want to compare 2 iterables and print the items which appear in both iterables. >>> a = ('q', 'r') &…

python if-statement list-comprehension
Test whether string is a valid integer

I'm trying to do something common enough: Parse user input in a shell script. If the user provided a valid …

string bash if-statement integer
How can I express that two values are not equal to eachother?

Is there a method similar to equals() that expresses "not equal to"? An example of what I am trying to …

java if-statement equals boolean-expression
Syntax for if/else condition in SCSS mixin

Hi I'm trying to learn SASS/SCSS and am trying to refactor my own mixin for clearfix what I'd like …

conditional mixins sass if-statement
jQuery check if Cookie exists, if not create it

I cannot get this code to work I must be missing something pretty simple. I am trying to check to …

jquery cookies if-statement referrer isnull