Programming-Idioms

Idiom

# 303 Array with non-default lower bound

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Declare an array a of integers with six elements, where the first index is 42 and consecutive elements have the indices 43, 44, 45, 46, 47.

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A : array (42 .. 47) of Integer;

  integer, dimension(42:47) :: a

int[] a = new int[6];
for(int value = 42, index = 0; value < 48; value++, index++) {
	a[index] = value;
}

var
  a: array[42..47] of integer;

use feature 'say';

use Array::Base +42;

my @a = ('A'..'Z');

say $a[42]; # prints A
say $a[43]; # prints B

no Array::Base;  # restore indexing to base 0

import array

a = array.array("i", range(42,48))