Search ('all' for everything):
Search results:
center
— position string at center
detab
— replace tabs by blanks
display
— display co-expression variables
entab
— replace blanks by tabs
image
— produce string image
left
— position string at left
right
— position string at right
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
—
prefix operations
\x
check for non-null value
Description
\x : x
\
x
produces
x
if the value of
x
is not the null value, but fails otherwise. It produces a variable if
x
is a variable.
Parameters
x
an expression or variable, which may be null.
returns
x
or
&null
See Also
expr \ i
— limit generator