boost::dynamic_bitset::dynamic_bitset

Similar to the constructor from a basic_string, but takes a pointer to a C‐style string (and doesn't take a pos).

Synopsis

Declared in <boost/dynamic_bitset/dynamic_bitset.hpp>

template<typename CharT>
explicit
dynamic_bitset(
    CharT const* s,
    std::size_t n = std::size_t( ‐1 ),
    size_type num_bits = npos,
    allocator_type const& alloc = allocator_type());

Description

The size of the bitset is num_bits if num_bits != npos, otherwise rlen = min( n, std::char_traits< CharT >::length( s ) ). The first M = min( num_bits, rlen ) bits are initialized to the corresponding characters in s.

Parameters

Name Description

Name	Description
s	The string to construct from.
n	The maximum number of characters in the string to consider.
num_bits	The size of the bitset to construct, if different from `npos`.
alloc	The allocator to use.

The string to construct from.

The maximum number of characters in the string to consider.

num_bits

The size of the bitset to construct, if different from npos.

alloc

The allocator to use.

Preconditions

The characters in s that are used to initialize the bits compare equal to either std::use_facet< std::ctype< CharT > >( std::locale() ).widen( '0' ) or std::use_facet< std::ctype< CharT > >( std::locale() ).widen( '1' ). E.g.: dynamic_bitset<> b( "10xyz", 2 ); // OK.

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