In each of the following, the value of
EXPR
can be any ISETL data type.
The function is the test for the value of
EXPR
being the type indicated.
is
atom(
EXPR)
.
is
boolean(
EXPR)
.
is
integer(
EXPR)
.
is
file(
EXPR)
.
is
floating(
EXPR)
.
is
func(
EXPR)
.
is
map(
EXPR)
.
is
number(
EXPR)
– true for integer and
floating_ point.
is
set(
EXPR)
.
is
string(
EXPR)
.
is
tuple(
EXPR)
.
is
om(
EXPR)
.
is
defined (
EXPR)
. Negation of
is
om
.