string2int.h File Reference

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

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Functions
unsigned	safe_string2unsigned (const std::string &str, int base=10)
std::size_t	safe_string2size_t (const std::string &str, int base=10)
int	unsafe_string2int (const std::string &str, int base=10)
unsigned	unsafe_string2unsigned (const std::string &str, int base=10)
std::size_t	unsafe_string2size_t (const std::string &str, int base=10)
long long int	unsafe_string2signedlonglong (const std::string &str, int base=10)
long long unsigned int	unsafe_string2unsignedlonglong (const std::string &str, int base=10)
std::optional< int >	string2optional_int (const std::string &, int base=10)
	Convert string to integer as per stoi, but return nullopt when stoi would throw.
std::optional< unsigned >	string2optional_unsigned (const std::string &, 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 (const std::string &, int base=10)
	Convert string to size_t similar to the stoul or stoull functions, return nullopt when the conversion fails.
template<typename T >
auto	string2optional_base (const std::string &str, int base) -> typename std::enable_if< std::is_signed< T >::value, long long >::type
	convert string to signed long long if T is signed
template<typename do_conversiont >
auto	wrap_string_conversion (do_conversiont do_conversion) -> std::optional< decltype(do_conversion())>
	attempt a given conversion, return nullopt if the conversion fails with out_of_range or invalid_argument
template<typename T >
std::optional< T >	string2optional (const std::string &str, int base=10)
	convert a string to an integer, given the base of the representation works with signed and unsigned integer types smaller than (unsigned) long long does not accept negative inputs when the result type is unsigned

Function Documentation

safe_string2size_t()

std::size_t safe_string2size_t	(	const std::string &	str,
		int	base = 10
	)

Definition at line 23 of file string2int.cpp.

safe_string2unsigned()

unsigned safe_string2unsigned	(	const std::string &	str,
		int	base = 10
	)

Definition at line 16 of file string2int.cpp.

string2optional()

template<typename T >

std::optional< T > string2optional	(	const std::string &	str,
		int	base = 10
	)

convert a string to an integer, given the base of the representation works with signed and unsigned integer types smaller than (unsigned) long long does not accept negative inputs when the result type is unsigned

Definition at line 111 of file string2int.h.

string2optional_base()

template<typename T >

auto string2optional_base	(	const std::string &	str,
		int	base
	)		-> typename std::enable_if<std::is_signed<T>::value, long long>::type

convert string to signed long long if T is signed

convert string to unsigned long long if T is unsigned

Definition at line 58 of file string2int.h.

string2optional_int()

std::optional< int > string2optional_int	(	const std::string &	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	(	const std::string &	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 71 of file string2int.cpp.

string2optional_unsigned()

std::optional< unsigned > string2optional_unsigned	(	const std::string &	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 65 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.

wrap_string_conversion()

template<typename do_conversiont >

auto wrap_string_conversion

(

do_conversiont

do_conversion

)

-> std::optional<decltype(do_conversion())>

attempt a given conversion, return nullopt if the conversion fails with out_of_range or invalid_argument

Definition at line 89 of file string2int.h.