bool

Converting and combining truth values. See Truth values for the rules.

`bool.TRUE`, `bool.FALSE`

bool.TRUE -> Bool
bool.FALSE -> Bool

The two boolean values, the same as the root names TRUE and FALSE.

bool.TRUE == TRUE    # => TRUE

bool.from value -> Bool

Returns the truth value of value: FALSE for FALSE, 0, "", [], {}, undefined values and pending promises, TRUE for everything else.

bool.from 0          # => FALSE
bool.from "no"       # => TRUE
bool.from (0, 1)     # => (FALSE, TRUE)

bool.any items -> Bool

Returns TRUE if at least one item of the tuple items is true. It reduces the whole tuple to one value, so bool.any () is FALSE.

bool.any (0, "", 3)  # => TRUE
bool.any (0, "")     # => FALSE

bool.all items -> Bool

Returns TRUE if every item of the tuple items is true. It reduces the whole tuple to one value, so bool.all () is TRUE.

bool.all (1, "a")    # => TRUE
bool.all (1, 0)      # => FALSE
bool.all ([1, 2] == [1, 2], 3 > 2)       # => TRUE