Std\Bool

Boolean combinators and conditional helpers.

Provides logical operations beyond the built-in && and || operators, plus conditional execution helpers.

Functions

not : Bool -> Bool

Logical negation.

not true    # => false
not false   # => true

and : Bool -> Bool -> Bool

Logical AND (short-circuiting).

and true true    # => true
and true false   # => false

or : Bool -> Bool -> Bool

Logical OR (short-circuiting).

or false true    # => true
or false false   # => false

xor : Bool -> Bool -> Bool

Exclusive OR — true when exactly one argument is true.

xor true false   # => true
xor true true    # => false

implies : Bool -> Bool -> Bool

Logical implication: a → b. False only when a is true and b is false.

implies true true    # => true
implies true false   # => false
implies false true   # => true

when : Bool -> (() -> Symbol) -> Symbol

Executes fn () if cond is true, otherwise returns :ok.

when true (\-> :done)    # => :done
when false (\-> :done)   # => :ok

unless : Bool -> (() -> Symbol) -> Symbol

Executes fn () if cond is false, otherwise returns :ok.

unless false (\-> :done)   # => :done
unless true (\-> :done)    # => :ok