to_float(a)
to_float(a, default_if_empty_string)
Returns the value of a converted to a float.
If a is a string and is "" then default_if_empty_string, a float (or int), is returned instead.
For bool, false=0.0 and true=1.0.
For times, returns number of microseconds since Jan 1 1970 UTC.
Examples
int
to_float(0)0.00
str
to_float("42")42.00
str with default
to_float("", 99)99.00