string>number ( str -- n/f )
Factor handbook » The language » Numbers » Converting between numbers and strings

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Vocabulary
math.parser

Inputs

str

a string

Outputs

n/f	a number or f

Word description
Creates a number from its string representation. In addition to real numbers, accepts complex numbers written as a+bj, a-bj or bj. Both components can be integers, ratios or floats. A coefficient of one may be omitted after the sign, as in 2+j.

Rectangular syntax takes precedence over a mixed-ratio imaginary coefficient: 1+1/2j means C{ 1 1/2 }.

Outputs f if the string does not represent a number.

See also
number>string

Definition

USING: kernel math.parser.private ;

IN: math.parser

: string>number ( str -- n/f )
    dup string>real [ nip ] [ string>complex ] if* ;