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string2int.h File Reference

#include "narrow.h"
#include <charconv>
#include <optional>
#include <string>
#include <string_view>
#include <type_traits>

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Go to the source code of this file.

Functions

unsigned safe_string2unsigned (std::string_view, int base=10)

std::size_t safe_string2size_t (std::string_view, int base=10)

int unsafe_string2int (const std::string &, int base=10)

unsigned unsafe_string2unsigned (const std::string &, int base=10)

std::size_t unsafe_string2size_t (const std::string &, int base=10)

long long int unsafe_string2signedlonglong (const std::string &, int base=10)

long long unsigned int unsafe_string2unsignedlonglong (const std::string &, int base=10)

std::optional< int > string2optional_int (std::string_view, int base=10)

Convert string to integer as per stoi, but return nullopt when stoi would throw.

std::optional< unsigned > string2optional_unsigned (std::string_view, int base=10)

Convert string to unsigned similar to the stoul or stoull functions, return nullopt when the conversion fails.

std::optional< std::size_t > string2optional_size_t (std::string_view, int base=10)

Convert string to size_t similar to the stoul or stoull functions, return nullopt when the conversion fails.

template<typename T >

std::optional< T > string2optional (std::string_view str, int base=10)

Convert a string to an integer, given the base of the representation, works with signed and unsigned integer types, rejects negative inputs when the result type is unsigned, rejects the empty string, rejects leading spaces, rejects any trailing non-numerical suffix.

Function Documentation

◆ safe_string2size_t()

std::size_t safe_string2size_t ( std::string_view str,

int base = 10

)

Definition at line 23 of file string2int.cpp.

◆ safe_string2unsigned()

unsigned safe_string2unsigned ( std::string_view str,

int base = 10

)

Definition at line 16 of file string2int.cpp.

◆ string2optional()

template<typename T >

std::optional< T > string2optional ( std::string_view str,

int base = 10

)

Convert a string to an integer, given the base of the representation, works with signed and unsigned integer types, rejects negative inputs when the result type is unsigned, rejects the empty string, rejects leading spaces, rejects any trailing non-numerical suffix.

A prefix such as 0, 0x, 0X to change base is not supported.

Definition at line 66 of file string2int.h.

◆ string2optional_int()

std::optional< int > string2optional_int ( std::string_view str,

int base = 10

)

Convert string to integer as per stoi, but return nullopt when stoi would throw.

Definition at line 59 of file string2int.cpp.

◆ string2optional_size_t()

std::optional< std::size_t > string2optional_size_t ( std::string_view str,

int base = 10

)

Convert string to size_t similar to the stoul or stoull functions, return nullopt when the conversion fails.

Note: Unlike stoul or stoull negative inputs are disallowed

Definition at line 70 of file string2int.cpp.

◆ string2optional_unsigned()

std::optional< unsigned > string2optional_unsigned ( std::string_view str,

int base = 10

)

Convert string to unsigned similar to the stoul or stoull functions, return nullopt when the conversion fails.

Note: Unlike stoul or stoull negative inputs are disallowed

Definition at line 64 of file string2int.cpp.

◆ unsafe_string2int()

int unsafe_string2int ( const std::string & str,

int base = 10

)

Definition at line 30 of file string2int.cpp.

◆ unsafe_string2signedlonglong()

long long int unsafe_string2signedlonglong ( const std::string & str,

int base = 10

)

Definition at line 45 of file string2int.cpp.

◆ unsafe_string2size_t()

std::size_t unsafe_string2size_t ( const std::string & str,

int base = 10

)

Definition at line 40 of file string2int.cpp.

◆ unsafe_string2unsigned()

unsigned unsafe_string2unsigned ( const std::string & str,

int base = 10

)

Definition at line 35 of file string2int.cpp.

◆ unsafe_string2unsignedlonglong()

long long unsigned int unsafe_string2unsignedlonglong ( const std::string & str,

int base = 10

)

Definition at line 52 of file string2int.cpp.