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45 lines
1.1 KiB
ReStructuredText
45 lines
1.1 KiB
ReStructuredText
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.. _sprout-string-basic_string-substr:
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###############################################################################
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substr
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###############################################################################
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Interface
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========================================
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.. sourcecode:: c++
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SPROUT_CONSTEXPR basic_string substr(size_type pos = 0, size_type n = npos) const;
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Requires
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========================================
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| ``pos <= size()``.
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Returns
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========================================
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| ``basic_string(data() + pos, rlen)`` when rlen is the smaller of n and ``size() - pos``.
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Throws
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========================================
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| std::out_of_range if ``pos > size()``.
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Examples
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========================================
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.. sourcecode:: c++
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#include <sprout/string.hpp>
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#include <sprout/assert.hpp>
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using namespace sprout;
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SPROUT_STATIC_CONSTEXPR auto x = string<8>("homuhomu");
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SPROUT_STATIC_CONSTEXPR auto y = x.substr(4, 4);
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SPROUT_ASSERT_MASG(y == "homu", "y is substring of x.");
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Header
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========================================
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| ``sprout/string/string.hpp``
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| Convenience header: ``sprout/string.hpp``
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