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operator std::basic_string

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substr

Interface

SPROUT_CONSTEXPR basic_string substr(size_type pos = 0, size_type n = npos) const;

Requires

pos <= size().

Returns

basic_string(data() + pos, rlen) when rlen is the smaller of n and size() - pos.

Throws

std::out_of_range if pos > size().

Examples

#include <sprout/string.hpp>
#include <sprout/assert.hpp>
using namespace sprout;

SPROUT_STATIC_CONSTEXPR auto x = string<8>("homuhomu");
SPROUT_STATIC_CONSTEXPR auto y = x.substr(4, 4);
SPROUT_ASSERT_MASG(y == "homu", "y is substring of x.");