Search ('all' for everything):
Search results:
&allocated — cumulative allocation
&ascii — ASCII characters
&clock — time of day
&collections — garbage collections
&cset — all characters
&current — current co-expression
&date — date
&dateline — date and time of day
&digits — digits
&dump — set termination dump
&e — base of natural logarithms
&error — set error conversion
&errornumber — number of last error
&errortext — description of last error
&errorvalue — value causing last error
&errout — standard error output
&fail — failure
&features — implementation features
&file — source file
&host — host system
&input — standard input
&lcase — lowercase letters
&letters — letters
&level — procedure level
&main — main co-expression
&null — null value
&output — standard output
&phi — golden ratio
&pi — pi
&pos — scanning position
&progname — program name
&random : i — random seed
&regions — storage regions
&source — source co-expression
&storage — storage utilization
&subject — subject of scanning
&time — elapsed time
&ucase — uppercase letters
&version — Icon version

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
 
function call
 
Description

x(x1, x2, ..., xn) : xm
If x is a function or procedure, x(x1, x2, …, xn) produces the outcome of calling x with arguments x1, x2, …, xn.

If x is an integer, x(x1, x2, …, xn) produces the outcome of xi, but fails if i is out of the range 1, …, n. In this case, it produces a variable if xi is a variable. i may be nonpositive.
 
Parameters
x
function or integer
x1…
arguments
returns
function result or result of xn[x] or fail
 
Defaults
x
-1
 
Errors
106 x not procedure or integer
117 x is main(), but there is no main procedure (during startup)
 
See Also
  • x!X — process argument list
  • x{x,…} — process argument list as co-expressions