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 "strings"
b := strings.HasPrefix(s, prefix)
var b = s.startsWith(prefix);
B = string:find(S, Prefix) =:= S.
$b = $prefix eq substr($s,0,length($prefix));
b =s.startswith(prefix)
import std.algorithm.searching;
b = s.startsWith(prefix);
boolean b = s.startsWith(prefix);
b := pos(prefix, s) = 1;
import Data.List
b = prefix `isPrefixOf` s
$b = (bool)preg_match('#^http#', $s);
b = s.start_with?(prefix)
var b = s.startsWith(prefix);
var b = (s.lastIndexOf(prefix, 0) === 0);
b = s:find(prefix) == 1
#include <stdbool.h>
#include <string.h>
bool b = !strncmp(s, prefix, sizeof(prefix)-1);