numb

Converting values to numbers.

numb.from

numb.from value -> Numb

Converts value to a number:

• a number is returned unchanged;
• TRUE is 1 and FALSE is 0;
• a text is read as a number literal, which may have a sign, a fraction and an exponent. The text must contain nothing else, not even spaces. "inf" and "NaN" are accepted too.

Any other value, and a text that is not a number, gives Undefined.

numb.from "42"       # => 42
numb.from "-1.5e3"   # => -1500
numb.from TRUE       # => 1
numb.from " 42"      # => Undefined
numb.from (text.trim " 42")    # => 42
numb.from ("1", "2") # => (1, 2)