Boost C++ Libraries

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Function starts_with

boost::algorithm::starts_with — 'Starts with' predicate

Synopsis

template<typename Range1T, typename Range2T, typename PredicateT> 
  bool starts_with(const Range1T & Input, const Range2T & Test, 
                   PredicateT Comp);
template<typename Range1T, typename Range2T> 
  bool starts_with(const Range1T & Input, const Range2T & Test);

Description

This predicate holds when the test string is a prefix of the Input. In other words, if the input starts with the test. When the optional predicate is specified, it is used for character-wise comparison.

Parameters:

Comp

An element comparison predicate

Input

An input sequence

Test

A test sequence

Returns:

The result of the test

Notes:

This function provides the strong exception-safety guarantee


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