lexicalCast2

Function

lexicalCast2

Cast from a String-type to a numerical type

lexicalCast2(TTarget & target, TSource const & source)

lexicalCast2(TTarget & target, String<TValue, TSpec> const & source)

Include Headers

seqan/stream.h

Parameters

target	Object to hold result of cast Types: double, int, unsigned int, or similar
source	The string to be read from Types: char[], CharString, or similar, std::string

Remarks

uses istringstream internally, so right now "123foobar" will be succesfully cast to an int of 123

Return Values

true if cast was successful, false otherwise

Types: bool

Examples

Using lexicalCast2 is straightforward and we can detect errors.

unsigned u = 0;
int i = 0;
double = 0;
bool success = false;

success = lexicalCast2(u, "3");      // => success is true, u is 3.
success = lexicalCast2(u, "-3");     // => success is false, u is undefined.
success = lexicalCast2(i, "-3");     // => success is true, i is -3.
success = lexicalCast2(d, "-3.99");  // => success is true, d is -3.99.