The boolean function of FEEL (DMN 1.6, section 10.3.4.2, Table 74).
There is one: not. It is the negation of Feel.Runtime.Logic (Table 51), which is also what a
not(...) among unary tests is, so there is one rule: not(true) is false, not(false) is true,
not(null) is null and no mistake, and not of anything else is null with a type mismatch (the
TCK, 0066: not(0), not("true")). not is an ordinary word, not a keyword (D-13), so not(x) is a
function call.
What is written (D-79)
| Call | Result |
|---|---|
not(negand) | the negation of a boolean |
Summary
Functions
The functions of this module that are written, as Feel.Builtin.Functions.
Returns the canonical names of the functions of this module, sorted.
Functions
@spec functions() :: [Feel.Builtin.Function.t()]
The functions of this module that are written, as Feel.Builtin.Functions.
@spec names() :: [Feel.Name.t()]
Returns the canonical names of the functions of this module, sorted.
iex> Feel.Builtin.Boolean.names()
["not"]