Date: Sun, 31 Aug 1997 09:31:09 -0700 (MST) From: Charles Mott <cmott@snake.srv.net> To: Brian Somers <brian@awfulhak.org> Cc: questions@FreeBSD.ORG Subject: Re: ppp and internal modem Message-ID: <Pine.BSF.3.96.970831092711.21019A-100000@darkstar.home> In-Reply-To: <199708311139.MAA01152@awfulhak.demon.co.uk>
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On Sun, 31 Aug 1997, Brian Somers wrote: > [.....] > > I was just doing some scripting in awk, and the array indices > > seemed to start with 1 and not 0, and this language was invented by the > > same person who started C. > > > > Hmmm, from the awk man page: > > ARGV Array of command line arguments. The array is > indexed from 0 to ARGC - 1. Dynamically > changing the contents of ARGV can control the > files used for data. > [.....] > array x which is indexed by the string "A\034B\034C". All > arrays in AWK are associative, i.e. indexed by string val- > ues. > > I can't claim to know much (practically) about arrays in awk - when > you get to that level, a C program is really in order ;-) But from > the docs, it seems that arrays are sparce and can effectively begin > with anything. You are entirely correct from a technical point of view and I should have been a little more careful with my wording. The first character in a string is denoted as 1 in the substr(), and when an array is created by split(), the first token is pointed to by the [1] index. This was a little counter-intuitive to me at first. However, arrays in their most general form in awk are associative and don't really have anything to do with numeric indexes. Charles Mott
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