ICON Language | Function Lookup

Search results:
!x — generate values
&allocated — cumulative allocation
&collections — garbage collections
&features — implementation features
&regions — storage regions
&storage — storage utilization
?x — generate random value
bal — locate balanced characters
every do — generate every result
expr \ i — limit generator
expr1 | expr2 — evaluate alternatives
find — find string
function — generate function names
i to i by i — generate integers in sequence
key — generate keys from table
seq — generate sequence of integers
suspend do — suspend from procedure
upto — locate characters
v<–>v — exchange values reversibly
v<–x — assign value reversibly
|expr — evaluate repeatedly

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 — lists, sets and tables, strings

x[x]

subscript

Description

x1[x2] : x3

If x1 is a string, x1[x2] produces a one-character string consisting of character x2 of x1. x1[x2] produces a variable if x1 is a variable.

If x1 is a list or record, x1[x2] produces element x2 of x1.

If x1 is a table, x1[x2] produces the element corresponding to key x2 of x1.

In all cases, x2 may be nonpositive.

In all cases, the subscripting operation fails if the subscript is out of range.

Parameters

x1: string, list, table or record
x2: string for table or record. integer for string or list
returns: element or fail

Errors

101	x1 is string, list, or a record, but x2 not integer
114	x1 not string, list, table, or record