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Memoization is a performance optimization technique.The idea with memoization is: “When a method invokes an expensive operation, don’t perform that ope.
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Chris came up with a mnemonic device: Fn-Delete – for when he really wants to delete something and is also thinking about password complexity requireme.
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When writing tests, or reading other people’s tests, it can be helpful to understand that tests are often structured in four distinct phases.These phas.
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A lot of good tools exist in the Ruby ecosystem that allow you to run some version of Ruby in the browser. I’m talking about tools like try.ruby-lang.o.
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With Rails/ActiveRecord, you can count the records in an association using three methods .count, .length, .size.As a rails newbie, when you first disco.
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