From: dsisnero@... Date: 2021-05-05T13:57:33+00:00 Subject: [ruby-core:103739] [Ruby master Bug#17851] ruby extension for memoryview Issue #17851 has been reported by dsisnero (Dominic Sisneros). ---------------------------------------- Bug #17851: ruby extension for memoryview https://bugs.ruby-lang.org/issues/17851 * Author: dsisnero (Dominic Sisneros) * Status: Open * Priority: Normal * Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN ---------------------------------------- add an extension to ruby for memoryview - (just like Fiddle::MemoryView but in ruby assuming Fiddle::MemoryView gets slices) add a method in Kernel to get initialize a memoryview on an object that is a c memoryview lets say we want to partially copy a file - minus the first KB ``` ruby f = File.open('test.txt', 'rb') do |f| content = f.read content_to_write = memoryview(content)[1024..-1] # here is what I want new -it will use the same memory as content just pointers puts "content length #{content.size} - content_to_write length #{content_to_write.size}" File.open('output.txt','wb') do |f2| f2.write(content_to_write) # if we have #17832 this will write to file without copying end end ``` If we have memoryview extension in ruby we can use less memory because we are no longer copying Strings when doing slices #17831 -- https://bugs.ruby-lang.org/ Unsubscribe: