to_bool(a)
to_bool(a, default_if_empty_string)
Returns the value of a converted to a boolean.
If a is a string and is "" then default_if_empty_string, a bool, is returned instead.
For numbers and times, 0=false and 1=true.
For strings, "false"=false and "true"=true.
Examples
int
to_bool(1)true
float
to_bool(0.0)false
str
to_bool("true")true
str with default
to_bool("", true)true