Top "If-statement" questions

MySQL: update a field only if condition is met

Is it possible to do an UPDATE query in MySQL which updates field value only if certain condition is met? …

mysql if-statement sql-update

If strings starts with in PowerShell

Is there a way to check if a string starts with a string? We are checking the groupmembership from the …

powershell if-statement startswith

jQuery check if attr = value

I seem to be having trouble with my code. I need to say: if ( $('html').attr('lang').val() == 'fr-FR' ) { // do …

jquery conditional attr if-statement

How to break a while loop from an if condition inside the while loop?

I want to break a while loop of the format below which has an if statement. If that if statement …

java if-statement while-loop break

Conditional statement in a one line lambda function in python?

Apologies if this has been asked before, but I couldn't see it anywhere. Essentially I've come across a scenario where …

python if-statement lambda ternary-operator conditional-operator

What is a good practice to check if an environmental variable exists or not?

I want to check my environment for the existence of a variable, say "FOO", in Python. For this purpose, I …

python python-2.7 python-3.x if-statement environment-variables

Is it a bad practice to use an if-statement without curly braces?

I've seen code like this: if(statement) do this; else do this; However, I think this is more readable: if(…

if-statement coding-style curly-braces

Correct syntax to compare values in JSTL <c:if test="${values.type}=='object'">

I have an if statement that I am trying to perform with JSTL. My code is below (the variables values …

jsp if-statement jstl el

What's the scope of a variable initialized in an if statement?

I'm new to Python, so this is probably a simple scoping question. The following code in a Python file (module) …

python variables if-statement scope local-variables

Simpler way to check if variable is not equal to multiple string values?

Current Codes: <?php // See the AND operator; How do I simplify/shorten this line? if( $some_variable !== 'uk' &&…

php if-statement conditional-statements