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Re: Undocumented array indexing feature? [message #14112 is a reply to message #14104]

Thu, 21 January 1999 00:00

wbiagiot
Messages: 59
Registered: January 1999

Member

Liam,

Actually, I don't remember seeing this feature documented either, but I use
it quite extensively to access individual indices from procedure/functions that
return an array (such as "WHERE", "SIZE", etc.) Since the data that you've
enclosed in parameters constitutes an array (a subset of your original array
actually), you are further indexing into the new 'subarray'.

An example:

Retrieve the 3rd nonzero element of integer array 'a':

a = [1,0,2,0,3,4,5,6]
result = (WHERE(A))[2] ; array indexing starts from 0

result should equal 3.

If the format of this post is lousy, it is because it is my very
first within the newsgroups. Help this helps.

BTW - message to D. Fanning. Your web site has been a tremendous service
to me and I have learned many concepts from you. Many thanks.

Bill B.

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[Message index]

		Re: Undocumented array indexing feature? By: wbiagiot on Mon, 25 January 1999 00:00
		Re: Undocumented array indexing feature? By: Alex Schuster on Mon, 25 January 1999 00:00
		Re: Undocumented array indexing feature? By: Mark Buckley on Mon, 25 January 1999 00:00
		Re: Undocumented array indexing feature? By: wrb1000 on Mon, 25 January 1999 00:00
		Re: Undocumented array indexing feature? By: Mark Buckley on Mon, 25 January 1999 00:00
		Re: Undocumented array indexing feature? By: Robert S. Hill on Fri, 22 January 1999 00:00
		Re: Undocumented array indexing feature? By: J.D. Smith on Fri, 22 January 1999 00:00
		Re: Undocumented array indexing feature? By: Liam Gumley on Fri, 22 January 1999 00:00
		Re: Undocumented array indexing feature? By: wbiagiot on Thu, 21 January 1999 00:00
		Re: Undocumented array indexing feature? By: Craig Markwardt on Thu, 21 January 1999 00:00

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