doj::alphanum_compare Struct Reference

Public Member Functions
constexpr bool	operator() (std::string_view l, std::string_view r) const noexcept

Static Public Member Functions
static constexpr bool	alphanum_isdigit (const char c) noexcept
static constexpr int	impl (const std::string_view ll, const std::string_view rr) noexcept

Member Function Documentation

impl()

static constexpr int doj::alphanum_compare::impl ( const std::string_view  ll, const std::string_view  rr  )

inlinestaticconstexprnoexcept

compare l and r with strcmp() semantics, but using the "Alphanum Algorithm". This function is designed to read through the l and r strings only one time, for maximum performance. It does not allocate memory for substrings. It can either use the C-library functions isdigit() and atoi() to honour your locale settings, when recognizing digit characters when you "#define ALPHANUM_LOCALE=1" or use it's own digit character handling which only works with ASCII digit characters, but provides better performance.

Parameters

l	NULL-terminated C-style string
r	NULL-terminated C-style string

Returns

negative if l<r, 0 if l equals r, positive if l>r

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The documentation for this struct was generated from the following file:

• Alphanum.hpp