From: nobu@... Date: 2018-03-31T15:43:29+00:00 Subject: [ruby-core:86416] [Ruby trunk Feature#14624] #{nil} allocates a fresh empty string each time Issue #14624 has been updated by nobu (Nobuyoshi Nakada). https://github.com/nobu/ruby/tree/feature/opt_to_s ---------------------------------------- Feature #14624: #{nil} allocates a fresh empty string each time https://bugs.ruby-lang.org/issues/14624#change-71351 * Author: bumblingbear (Dillon Welch) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- This causes a bunch of unnecessary string allocations in the following scenario: `"#{'rails' unless boolean_condition} is great"`. Each time this line is called when `boolean_condition` is true, it evaluates to `nil` and when `nil` is interpolated into a string it allocates an empty string. Ideally, the behavior of `nil.to_s` would reference a frozen empty string that wouldn't need to be reallocated each time. -- https://bugs.ruby-lang.org/ Unsubscribe: