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!x
— generate values
+N
— compute positive
-N
— compute negative
.x
— dereference variable
/x
— check for null value
=s
— match string in scanning
?x
— generate random value
@C
— activate co-expression
\x
— check for non-null value
^C1
— create refreshed co-expression
|expr
— evaluate repeatedly
~c1
— compute cset complement
∗x
— compute size
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
compute size
Description
∗x : i
∗
x
produces the size of
x
— the number of elements in
x
.
Parameters
x
a
cset
,
string
,
co–expression
, or
structure
returns
a count of the elements composing
x
Errors
112
x not
cset
,
string
,
co–expression
, or
structure