StringstartsWithString

StringStartsWithstring is a utility function used in many programming environments to determine whether a given string begins with a specified prefix. It returns a boolean value indicating the result of the check. The exact name and signature vary by language, but a common form is StringStartsWithstring(s, prefix), where s is the input string and prefix is the substring to test for at the start.

In typical usage, the function evaluates whether the initial characters of s match prefix. If they match, it returns true; otherwise, it returns false. If prefix is the empty string, the function usually returns true. Behavior when inputs are null or undefined depends on language; some environments throw an exception, while others may coerce values or return false.

Examples: StringStartsWithstring('hello world', 'hello') yields true. StringStartsWithstring('hello', 'world') yields false. The comparison is usually case-sensitive, though languages may offer case-insensitive variants or options to specify locale.

Notes: This function is conceptually similar to methods like startsWith in JavaScript or hasPrefix in some languages; it is often provided as a standard library routine or part of a string utility library. Consider using language-specific equivalents when integrating with existing code for readability and consistency.

See also: StringEndsWith, Contains, HasPrefix.