How do I check for an empty/undefined/null string in JavaScript?
In my particular case - empty("0") must return false (because that is a not empty string), but empty(0) must return true because it is empty :) – Andron Commented Apr 2, 2014 at 11:24
Checking if a string is empty or null in Java - Stack Overflow
Feb 6, 2013 · StringUtils.isBlank(String str) - Checks if a String is whitespace, empty ("") or null. the latter considers a String which consists of spaces or special characters eg " " empty too. …
How to check if the string is empty in Python? - Stack Overflow
One may think that "empty_string" is a descriptive variable name. It isn't. Before you go and do empty_string = "" and think you have a great variable name to compare to. This is not what …
Javascript: How to check if a string is empty? - Stack Overflow
If you add blank spaces to your string, length counts the blank spaces, so with length we can't determine whether a string is empty or not. – avolquez Commented Aug 28, 2013 at 12:21
How can I check whether a string variable is empty or null in C#?
// Indicates whether the specified string is null or an Empty string. string.IsNullOrEmpty(string value); Additionally, since .NET 4.0 there's a new method that goes a bit farther: // Indicates …
TypeScript check for empty string - Stack Overflow
Jun 22, 2017 · Is there a way for TypeScript to statically check for an empty string? Is there a way to statically require a non-empty string to be passed to a function? let fn = function(a:string){ }; …
How can I check if a string is null or empty in PowerShell?
Dec 6, 2012 · Is there a built-in IsNullOrEmpty-like function in order to check if a string is null or empty, in PowerShell? I could not find it so far and if there is a built-in way, I do not want to …
How to check whether a str (variable) is empty or not?
Mar 29, 2012 · Let’s see two different methods of checking if string is empty or not: Method #1 : Using Len() Using Len() is the most generic method to check for zero-length string. Even …
What is the best way to test for an empty string in Go?
@honzajde Just tried to validate your statement, but found commits in the standard library less than 1 year old using len to check empty/non-empty strings. Like this commit by Brad …
How to check if C string is empty - Stack Overflow
Apr 20, 2018 · The shortest way to do that would be: do { // Something } while (*url); Basically, *url will return the char at the first position in the array; since C strings are null-terminated, if the …