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NetRexx Overview, version 2.02
Copyright (c) IBM Corporation, 2001. All rights reserved. © | 22 May 2001 |
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Arrays
NetRexx also supports fixed-size arrays. These are an ordered set of items, indexed by integers. To use an array, you first have to construct it; an individual item may then be selected by an index whose value must be in the range 0 through n-1, where n is the number of items in the array:
array=String[3] -- make an array of three Strings
array[0]='String one' -- set each array item
array[1]='Another string'
array[2]='foobar'
loop i=0 to 2 -- display the items
say array[i]
end
This example also shows NetRexx line comments; the sequence
‘--’ (outside of literal strings or
‘/*’ comments) indicates that the remainder of the
line is not part of the program and is commentary.
NetRexx makes it easy to initialize arrays: a term which is a list of one or more expressions, enclosed in brackets, defines an array. Each expression initializes an element of the array. For example:
words=['Ogof', 'Ffynnon', 'Ddu']would set words to refer to an array of three elements, each referring to a string. So, for example, the instruction:
say words[1]would then display Ffynnon.
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From
The NetRexx Language by
Mike Cowlishaw,