tf::StringLike Concept Reference

concept that determines if a type is string-like More...

#include <taskflow/core/graph.hpp>

Concept definition

template<typename T>
concept tf::StringLike =  std::convertible_to<T, std::string_view>

Detailed Description

concept that determines if a type is string-like

A type satisfies tf::StringLike if it is convertible to std::string_view, including:

• std::string
• std::string_view
• const char*
• any type that provides an implicit conversion to std::string_view

static_assert(tf::StringLike<std::string>);
static_assert(tf::StringLike<std::string_view>);
static_assert(tf::StringLike<const char*>);
 
// custom type with implicit conversion
struct MyString {
  operator std::string_view() const { return _data; }
  std::string _data;
};
static_assert(tf::StringLike<MyString>);