mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
95 lines
2.2 KiB
ReStructuredText
95 lines
2.2 KiB
ReStructuredText
|
.. _sprout-string-basic_string-find:
|
||
|
|
###############################################################################
|
||
|
|
find
|
||
|
|
###############################################################################
|
||
|
|
|
||
|
|
Interface
|
||
|
|
========================================
|
||
|
|
.. sourcecode:: c++
|
||
|
|
|
||
|
|
template<std::size_t N2>
|
||
|
|
SPROUT_CONSTEXPR size_type find(basic_string<T, N2, Traits> const& str, size_type pos = 0) const SPROUT_NOEXCEPT;
|
||
|
|
|
||
|
|
Effects
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| Determines the lowest position xpos, if possible, such that both of the following conditions obtain:
|
||
|
|
|
||
|
|
* ``pos <= xpos and xpos + str.size() <= size();``
|
||
|
|
* ``traits_type::eq(at(xpos + I), str.at(I))`` for all elements I of the string controlled by str.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| xpos if the function can determine such a value for xpos. Otherwise, returns npos.
|
||
|
|
|
||
|
|
Remarks
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| Uses ``traits_type::eq()``.
|
||
|
|
|
||
|
|
Examples
|
||
|
|
========================================
|
||
|
|
.. sourcecode:: c++
|
||
|
|
|
||
|
|
#include <sprout/string.hpp>
|
||
|
|
using namespace sprout;
|
||
|
|
|
||
|
|
SPROUT_STATIC_CONSTEXPR auto input = string<8>("madocchi");
|
||
|
|
SPROUT_STATIC_CONSTEXPR auto result = input.find("cchi");
|
||
|
|
static_assert(result == 4, "a found position is 4.");
|
||
|
|
|
||
|
|
Complexity
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| Recursive function invocations in *O(logN)* (logarithmic) depth.
|
||
|
|
|
||
|
|
.. note::
|
||
|
|
The current implementation is incomplete. *O(N)* (linear) depth.
|
||
|
|
|
||
|
|
----
|
||
|
|
|
||
|
|
Interface
|
||
|
|
========================================
|
||
|
|
.. sourcecode:: c++
|
||
|
|
|
||
|
|
SPROUT_CONSTEXPR size_type find(value_type const* s, size_type pos, size_type n) const;
|
||
|
|
|
||
|
|
Returns
|
||
|
|
========================================
|
||
|
|
|
||
|
|
|
|
||
|
|
|
||
|
|
----
|
||
|
|
|
||
|
|
Interface
|
||
|
|
========================================
|
||
|
|
.. sourcecode:: c++
|
||
|
|
|
||
|
|
SPROUT_CONSTEXPR size_type find(value_type const* s, size_type pos = 0) const;
|
||
|
|
|
||
|
|
Returns
|
||
|
|
========================================
|
||
|
|
|
||
|
|
|
|
||
|
|
|
||
|
|
----
|
||
|
|
|
||
|
|
Interface
|
||
|
|
========================================
|
||
|
|
.. sourcecode:: c++
|
||
|
|
|
||
|
|
SPROUT_CONSTEXPR size_type find(value_type c, size_type pos = 0) const;
|
||
|
|
|
||
|
|
Returns
|
||
|
|
========================================
|
||
|
|
|
||
|
|
|
|
||
|
|
|
||
|
|
Header
|
||
|
|
========================================
|
||
|
|
|
||
|
|
| ``sprout/string/string.hpp``
|
||
|
|
| Convenience header: ``sprout/string.hpp``
|
||
|
|
|