...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Find the first occurrence of any of the characters within the string.
template< [role red error.param neither has a declname nor a 'class ' prefix in the type][role red error.param neither has a declname nor a 'class ' prefix in the type][role red error.param neither has a declname nor a 'class ' prefix in the type][role red error.param neither has a declname nor a 'class ' prefix in the type]> constexpr size_type find_first_of( const T& t, size_type pos = 0) const;
Constructs a temporary string_view_type
object sv
from t
, and finds the first occurrence of
any of the characters in sv
within the string starting at the index pos
.
Linear.
Type |
Description |
---|---|
|
The type of the object to convert. |
std::is_convertible<const T&, string_view>::value
&& !std::is_convertible<const T&, const
CharT*>::value
.
The index corrosponding to the first occurrence of any of the characters
in {sv.begin(), sv.end())
within {begin()
+ pos, end()
)
if it exists, and npos
otherwise.
Name |
Description |
---|---|
|
The characters to search for. |
|
The index to start searching at. The default argument for this
parameter is |