[#bsl-bitset-2constructor-03]
= xref:bsl.adoc[bsl]::xref:bsl/bitset.adoc[bitset]::bitset
:relfileprefix: ../../
:mrdocs:

Create a bitset with its first `M` bit positions corresponding to the characters in the specified `pos` of the specified `str`. `M` is the smaller of the parameterized `N` and `str.length()`. If `M < N`, the remaining bit positions are initialized to 0. Characters with the value `zeroChar` correspond to an unset bit and characters with the value `oneChar` correspond to a set bit. The behavior is undefined if any characters in `str` is neither the specified `zeroChar` nor the specified `oneChar`.

== Synopsis

Declared in `<bslstl_bitset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class CHAR_TYPE,
    class TRAITS,
    class ALLOCATOR>
explicit
bitset(
    std::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR> const& str,
    std::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR>::size_type pos = 0,
    std::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR>::size_type n = std::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR>::npos,
    CHAR_TYPE zeroChar = CHAR_TYPE('0'),
    CHAR_TYPE oneChar = CHAR_TYPE('1'));
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#