[#bsl-bitset-2constructor-07]
= xref:bsl.adoc[bsl]::xref:bsl/bitset.adoc[bitset]::bitset
:relfileprefix: ../../
:mrdocs:

Constructors

== Synopses

Declared in `<bslstl_bitset.h>`

Create a `bitset` with all bits initialized to `0`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:bsl/bitset/2constructor-09.adoc[bitset]() noexcept;
----

[.small]#xref:bsl/bitset/2constructor-09.adoc[_» more..._]#

Create a bitset from the low‐order bits of the specified `val`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:bsl/bitset/2constructor-08b.adoc[bitset](unsigned long long val) noexcept;
----

[.small]#xref:bsl/bitset/2constructor-08b.adoc[_» more..._]#

Create a bitset from characters in the specified `str`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class CHAR_TYPE,
    class TRAITS,
    class ALLOCATOR>
explicit
xref:bsl/bitset/2constructor-08f.adoc[bitset](
    xref:bsl/basic_string-0faf.adoc[bsl::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR>] const& str,
    bsl::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR>::size_type pos = 0,
    bsl::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR>::size_type n = bsl::basic_string<CHAR_TYPE, TRAITS, ALLOCATOR>::npos,
    CHAR_TYPE zeroChar = CHAR_TYPE('0'),
    CHAR_TYPE oneChar = CHAR_TYPE('1'));
----

[.small]#xref:bsl/bitset/2constructor-08f.adoc[_» more..._]#

Create a bitset from characters in the specified `str`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class CHAR_TYPE,
    class TRAITS,
    class ALLOCATOR>
explicit
xref:bsl/bitset/2constructor-03.adoc[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]#xref:bsl/bitset/2constructor-03.adoc[_» more..._]#

== Parameters

[cols="1,4"]
|===
| Name| Description
| *val*
| integer whose bits initialize the low‐order positions
| *str*
| character sequence providing bit values
| *pos*
| starting index in `str` (default 0)
| *n*
| maximum number of characters to use (default npos)
| *zeroChar*
| character representing an unset bit (default '0')
| *oneChar*
| character representing a set bit (default '1')
|===


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