ICON Language | Function Lookup

Search results:
[x1, …] — create list
copy — copy value
delete — delete element
get — get value from list
insert — insert element
key — generate keys from table
list — create list
L|||L — concatenate lists
member — test for membership
pop — pop from list
pull — pull from list
push — push onto list
put — put onto list
set — create set
sort — sort structure
sortf — sort structure by field
table — create table
x!X — process argument list
x++x — compute cset or set union
x===x — value equal
x[i+:i] — produce substring or list section
x[i-:i] — produce substring or list section
x[i:i] — produce substring or list section
x[x, …] — multiple subscript
x[x] — subscript
x~===x — value not equal
x––x — compute cset or set difference
x∗∗x — cset or set intersection

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 — metadata

proc

convert to procedure

Description

p proc(s, i)

proc(s, i) produces the procedure, function or operator corresponding to s, but fails if s is not the name of one. If s is the string name of an operator, i specifies the number of arguments. proc(s, 0) produces the built-in function named s even if the global identifier having that name has been assigned another value. proc(s, 0) fails if s is not the name of a function.

The first argument of proc() may be a procedure, function or operator, in which case proc() simply returns the first argument.

Parameters

s: the name of a procedure
i: the number or arguments: 1 for unary (prefix), 2 for binary (infix), and 3 for ternary
returns: the procedure found or fail.

Defaults

i: 1

Errors

101	i is not an integer
205	i is not 0, 1, 2 or 3