Dealing with variables and indices

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   Hello!

I was wondering if it is possible to 

1. Define a variable in the form an array of strings and use indices to get values. 

2. For a variable appended with one or more object ids with space separation write a generator function which can pop out the oids one by one.

/Tahir

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Tahir Members Profile Send Private Message Find Members Posts Add to Buddy List Major Contributor Joined: 01.Mar.2012 Points: 27	Post Options Post Reply Quote Tahir Report Post Thanks(0) Quote Reply Topic: Dealing with variables and indices Posted: 03.Apr.2012 at 19:53
	Hello! I was wondering if it is possible to 1. Define a variable in the form an array of strings and use indices to get values. 2. For a variable appended with one or more object ids with space separation write a generator function which can pop out the oids one by one. /Tahir

stevek Members Profile Send Private Message Find Members Posts Add to Buddy List MetaCase Joined: 11.Mar.2008 Points: 643	Post Options Post Reply Quote stevek Report Post Thanks(0) Quote Reply Posted: 04.Apr.2012 at 00:03
	1. Sure. For instance to make variables myObjectNames[0], myObjectNames[1] etc.: foreach .MyObject { variable 'myObjectNames[' $ix++ ']' write id close } But since these are associative variables, you can go further and use anything as the index, not just integers. This lets you build the equivalent of hashed collections: foreach .MyObject { variable 'myObjectNames[' oid ']' write id close } You don't need to enclose the index in square brackets, anything will do, e.g. myObjectNames_0 2. Sure again! You just translate the spaces into newlines, then iterate over the result. E.g. to list the oids to '%spaceToNewline \ \ ' endto /* i.e. escaped space, space (=translates to), escaped newline */ dowhile $spaceSeparatedOids%spaceToNewline { oid ', ' } Edited by stevek - 04.Apr.2012 at 00:06

Tahir Members Profile Send Private Message Find Members Posts Add to Buddy List Major Contributor Joined: 01.Mar.2012 Points: 27	Post Options Post Reply Quote Tahir Report Post Thanks(0) Quote Reply Posted: 04.Apr.2012 at 21:13
	Thanks for the help. It worked to some extent. Now I want to know how can we use other variables as the index and apply it in a conditional statement. A small code is given below for an illustration of what I am aiming for. $Var2='0' $Var3 ... if $Var1[$Var2] = 'bravo' then 'Print 1' else if $Var1[$Var3] = 'alpha' then 'Print 2' endif endif

stevek Members Profile Send Private Message Find Members Posts Add to Buddy List MetaCase Joined: 11.Mar.2008 Points: 643	Post Options Post Reply Quote stevek Report Post Thanks(0) Quote Reply Posted: 04.Apr.2012 at 23:24
	The IF condition can only contain atomic commands, but you can retrieve and store the array element into a temporary variable and use that in the condition: variable 'tmp' write variable 'Var1[' $Var2 ']' read close if $tmp = 'bravo' ... In 5.0 you can define _put() and _get() generators as functions to make this neater: _put(@arrayName, @arrayIndex, @elementValue) variable @arrayName '[' @arrayIndex ']' write @elementValue close _get(@arrayName, @arrayIndex) variable @arrayName '[' @arrayIndex ']' read Then you can use them like this: $Var2='0' _put('Var1', $Var2, 'bravo') if _get('Var1', $Var2) = 'bravo' ... Edited by stevek - 04.Apr.2012 at 23:25

dionblain Members Profile Send Private Message Find Members Posts Add to Buddy List Member Joined: 13.Apr.2012 Location: Richmond, VA Points: 1	Post Options Post Reply Quote dionblain Report Post Thanks(0) Quote Reply Posted: 13.Apr.2012 at 08:18
	Thanks for the help!