loops Archives - IT Nursery

Emulating a do-while loop in Bash

What is the best way to emulate a do-while loop in Bash? I could check for the condition before entering the while loop, … Read more

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

This question already has answers here: PHP foreach loop key value (4 answers) Closed 2 years ago. My associative array: $arr = array( … Read more

So I’m trying to make this program that will ask the user for input and store the values in an array / list. … Read more

I know that there were a lot of topics like this. And I know the basics: .forEach() operates on original array and .map() … Read more

What is the best way to guard against null in a for loop in Java? This seems ugly : if (someList != null) … Read more

There are apparently many ways to iterate over a collection. Curious if there are any differences, or why you’d use one way over … Read more

I have a loop that looks something like this: for (int i = 0; i < max; i++) { String myString = …; … Read more

I try with a loop like that // ArrayList tourists for (Tourist t : tourists) { if (t != null) { t.setId(idForm); } … Read more

I have a big performance problem in R. I wrote a function that iterates over a data.frame object. It simply adds a new … Read more