From 44e08a68303f6f8669bad43199be13b7614ad6ab Mon Sep 17 00:00:00 2001 From: Ben Pfaff Date: Thu, 8 Jun 2006 04:32:58 +0000 Subject: [PATCH] Update comment to reflect availability of random casereaders. --- src/data/casefile.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/src/data/casefile.c b/src/data/casefile.c index 9e31d431ce..453fbf09da 100644 --- a/src/data/casefile.c +++ b/src/data/casefile.c @@ -66,10 +66,10 @@ during the reading phase. Each casereader has an independent position in the casefile. - Casereaders may only move forward. They cannot move - backward to arbitrary records or seek randomly. - Cloning casereaders is possible, but it is not yet - implemented. + Ordinary casereaders may only move forward. They + cannot move backward to arbitrary records or seek + randomly. Cloning casereaders is possible, but it is + not yet implemented. Use casefile_get_reader() to create a casereader for use in phase 2. This also transitions from phase 1 to @@ -80,6 +80,12 @@ a case from a casereader. Use casereader_destroy() to discard a casereader when it is no longer needed. + "Random" casereaders, which support a seek operation, + may also be created. These should not, generally, be + used for statistical procedures, because random access + is much slower than sequential access. They are + intended for use by the GUI. + 3. Destruction. This phase is optional. The casefile is also read with casereaders in this phase, but the ability to create new casereaders is curtailed. -- 2.30.2