Search ('all' for everything):
Search results:
&ascii
— ASCII characters
&cset
— all characters
&digits
— digits
&lcase
— lowercase letters
&letters
— letters
&ucase
— uppercase letters
cset
— convert to cset
x++x
— compute cset or set union
x––x
— compute cset or set difference
x∗∗x
— cset or set intersection
~c1
— compute cset complement
Index of Function Types:
affects &pos
character sets
co-expressions
control structures
file processing
generators
infix operations
keywords
lists, sets and tables
math
metadata
output formatting
pattern matching
prefix operations
records
strings
windows and keyboards
Index of Subsystems:
base
digitcnt.icn
SNOBOL4 functions
base
—
control structures
,
infix operations
expr & expr
evaluate in conjunction
Description
x1 & x2 : x2
x1
&
x2
produces
x2
, unless
x1
fail
s. It produces a variable if
x2
is a variable.
Parameters
x1
expression
x2
expression
returns
x2
or
fail
See Also
expr1 | expr2
— evaluate alternatives