from_string() [3/9]

T Chusov::String::from_string

(

const std::basic_string< CharT, TraitsT, AllocT > &

strValue

)

A set of templates providing an interface to convert an argument specifying a C or C++ string to a value of a specified type. .

Template Parameters

T	is a type for the string value to convert to. The type T must be either constructible from strValue directly or be one of the fundamental arithmetic types.
CharT	A deduced type of a character of the string. It must be either char or wchar_t.
TraitsT	A deduced traits type used by the string.
AllocT	A deduced allocator type used by the string.

Parameters

strValue

A C++ string containing the value to convert.

Returns

The resulting value. If the type T is constructible from the parameter, the appropriate constructor is called to produce the return value. Otherwise, if T is one of the arithmetic types, the call is redirected to overloads of from_string accepting char or wchar_t based C-strings.

Note

If a conversion to an arithmetic type takes place, then unlike C and C++ library conversion functions, this function fails, if strValue is an empty string, or if not the entire strValue can be converted into the type T, because of parsing errors and (for integral T) when the produced value goes out of valid range of supported values for T.

Exceptions

Chusov::Exceptions::InvalidParameterException

Parsing or range error occurred during a conversion to an arithmetic T.