From: eregontp@... Date: 2017-12-12T10:17:24+00:00 Subject: [ruby-core:84202] [Ruby trunk Feature#14151] Make Matrix#[]= public method Issue #14151 has been updated by Eregon (Benoit Daloze). Intuitively I agree all numeric *values* should be immutable. I'm less sure about "collections" of such numeric values, like Matrix or Vector (not just a fixed number of Integer/Float components like Rational/Complex). All built-in collections in Ruby (Array, Hash, String) are mutable, and they can be made immutable with #freeze. ---------------------------------------- Feature #14151: Make Matrix#[]= public method https://bugs.ruby-lang.org/issues/14151#change-68319 * Author: greggzst (Grzegorz Jakubiak) * Status: Feedback * Priority: Normal * Assignee: marcandre (Marc-Andre Lafortune) * Target version: ---------------------------------------- I don't even understand why this method hasn't been public since the beginning. I've come to a point when I have to create a matrix in a specific way using row and column indices and I can't use #build with a block because then indices go from the beginning of matrix whereas I have to from the center of the matrix. So what I wanted to do is to create a zero matrix and the fill it in a proper way but I can't without using #[]=. I know I can reopen class and that's what I'm doing but this just doesn't make sense. If we can change elements in an array like so using #[]= then why matrices can't use that as well? -- https://bugs.ruby-lang.org/ Unsubscribe: