Boost.URL

    • Quick Look
    • URLs
      • Parsing
      • Containers
      • Segments
      • Params
      • Normalization
      • String Token
      • Percent Encoding
      • Formatting
    • Customization
      • Parse Rules
      • Character Sets
      • Compound Rules
      • Ranges
      • RFC 3986
    • Examples
      • QR Code
      • Finicky
      • mailto URLs
      • Magnet Link
      • File Router
      • Router
      • Sanitizing URLs
    • Reference
      • Index
      • Concepts
        • CharSet
        • Rule
        • StringToken
      • Help Card

boost::urls::grammar::alpha_chars

The set of all letters

Synopsis

Declared in header <boost/url/grammar/alpha_chars.hpp>

constexpr
implementation-defined alpha_chars = alpha_chars{};

Description

Character sets are used with rules and the

functions find_if and find_if_not .

system::result< core::string_view > rv = parse( "JohnDoe", token_rule( alpha_chars ) );
ALPHA       = %x41-5A / %x61-7A
            ; A-Z / a-z
  • B.1. Core Rules (rfc5234)

See Also

find_if , find_if_not , parse , token_rule .