How can I make sense of the `else` clause of Python loops?
Many Python programmers are probably unaware that the syntax of while loops and for loops includes an optional else: clause: for val in … Read more
while-loop
How to break out of a loop in Bash?
I want to write a Bash script to process text, which might require a while loop. For example, a while loop in C: … Read more
Are “while(true)” loops so bad? [closed]
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, … Read more
Java method with return type compiles without return statement
Question 1: Why does the following code compile without having a return statement? public int a() { while(true); } Notice: If I add … Read more
Are loops really faster in reverse?
I’ve heard this quite a few times. Are JavaScript loops really faster when counting backward? If so, why? I’ve seen a few test … Read more
A variable modified inside a while loop is not remembered
In the following program, if I set the variable $foo to the value 1 inside the first if statement, it works in the … Read more
Declaring variables inside or outside of a loop
Why does the following work fine? String str; while (condition) { str = calculateStr(); ….. } But this one is said to be … Read more
How to check if all elements of a list match a condition?
I have a list consisting of like 20000 lists. I use each list’s 3rd element as a flag. I want to do some … Read more
Are loops really faster in reverse?
I’ve heard this quite a few times. Are JavaScript loops really faster when counting backward? If so, why? I’ve seen a few test … Read more
How can you run a command in bash over and over until success?
I have a script and want to ask the user for some information, but the script cannot continue until the user fills in … Read more