Programming-Idioms

Implementation
JS

Be concise.

Be useful.

All contributions dictatorially edited by webmasters to match personal tastes.

Please do not paste any copyright violating resource.

Please try to avoid dependencies to third-party libraries and frameworks.

Other implementations
import org.apache.commons.lang.StringUtils;
boolean blank = StringUtils.isBlank(s);
import "strings"
blank := strings.TrimSpace(s) == ""
$blank = !$s || $s=~/^\s*$/;
import std.algorithm;
import std.uni;
bool blank = s.all!isSpace;
blank := trim(s) = '';
import Data.Char (isSpace)
b = null (dropWhile isSpace s)
with Ada.Strings.Fixed;
use Ada.Strings.Fixed;
Blank := Index_Non_Blank (Str) = 0;
blank = s.strip() == ''
import Data.Char (isSpace)
blank :: Bool
blank = all isSpace s
$blank = (empty(trim($s));
$blank = !trim($s);
blank = s.strip.empty?
blank = s ~= nil and s:match("%S") ~= nil
let blank = s.trim().is_empty();
blank = s == nil || String.length(String.trim s) == 0
val blank = s.trim().isEmpty()
boolean blank = s.trim().isEmpty();
bool blank = string.IsNullOrWhiteSpace(s);
System;
bool blank = string.IsNullOrWhiteSpace(s);
(setf blank (not (find #\space s :test-not #'eql)))
#include <algorithm>
#include <cctype>
#include <string>
bool blank = false;
if (s.empty() || std::all_of(s.begin(), s.end(), [](char c){return std::isspace(c);})) {
      blank = true;
}
blank = s == ''
Blank = string:is_empty(string:trim(S)).
(require '[clojure.string :refer [blank?]])
(blank? s)
IDENTIFICATION DIVISION.
PROGRAM-ID. blank string.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 BOOLEAN-BLANK     PIC X.
   88 BLANK          VALUE "T".
   88 NOT-BLANK      VALUE "F".
PROCEDURE DIVISION.
    IF s = ' '
       SET BLANK     TO TRUE
    ELSE
       SET NOT-BLANK TO TRUE
    END-IF 	 	
STOP RUN.
Dim myString As String = "abcdefg"
If String.IsNullOrEmpty(myString) Then
    '''
End If
val blank = s.isNullOrBlank()
final blank = s == null || s.trim() == '';