Ruby 2.1: Frozen String Literals · computer talk by @tmm1
23 Dec 2013 In Ruby 2.1, "str".freeze is optimized by the compiler to return a single shared frozen strings on every invocation. An alternative "str"f syntax was implemented initially, but later reverted. Although the external scope of this feature is limited, internally it is used extensively to de-duplicate strings in the VM. Previously, every def method_missing(), the symbol :method_missing and
Unraveling String Key Performance in Ruby 2.2 — SitePoint
November 24, 2014Unraveling String Key Performance in Ruby 2.2 Everyone wants their programs to be faster and to take up less memory. However, it’s not often that this is achieved without having to modify source code. This post will introduce optimizations added in Ruby 2.2.0 when working with a Hash and string keys. To understand the optimization, you need to know current behavior. In Ruby 2.1 an
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