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Search results:
N^N — compute exponential
&e — base of natural logarithms
&phi — golden ratio
&pi — pi
&random : i — random seed
+N — compute positive
-N — compute negative
abs — compute absolute value
acos — compute arc cosine
asin — compute arc sine
atan — compute arc tangent
cos — compute cosine
dtor — convert degrees to radians
exp — compute exponential
i to i by i — generate integers in sequence
iand — compute bitwise AND
icom — compute bitwise complement
integer — convert to integer
ior — compute bitwise inclusive OR
ishift — arithmetic shift bits
ixor — compute bitwise exclusive OR
log — compute logarithm
N%N — compute remainder
N+N — compute sum
N/N — compute quotient
N1∗N2 — compute product
N<=N — numerically less than or equal
N<N — numerically less than
N=N — numerically equal
N>=N — numerically greater than or equal
N>N — numerically greater than
numeric — convert to numeric
N~=N — numerically not equal
N–N — compute difference
real — convert to real
rtod — convert radians to degrees
seq — generate sequence of integers
sin — compute sine
sqrt — compute square root
tan — compute tangent

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
 
produce substring or list section
 
Description

x1[i1+:i2] : x2
If x1 is a string, x1[i1+:i2] produces the substring of x1 between i1 and i1 + i2. x1[i1+:i2] produces a variable if x1 is a variable.

If x1 is a list, x1[i1+:i2] produces a list consisting of the values of x1 in the given range.

In either case, i1 and i2 may be nonpositive.

In either case, the subscripting operation fails if a subscript is out of range.
 
Parameters
x1
string or list
i1
integer initial subscript
i2
integer ending subscript
returns
subset of string or list or fail
 
Errors
101 i1 or i2 not integer
114 x1 not string or list
 
See Also
  • x[x] — subscript
  • x[i:i] — produce substring or list section
  • x[i-:i] — produce substring or list section