Ruby craft, one idea at a time.
A Ruby interview question: evaluate 2+3*4 as 14 without eval. Precedence as an array of operator levels, leftmost-first reduction, and where it breaks.
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Seven lines of Ruby add a palindrome? method to String. What the POSIX regex, Module#include and Unicode accents actually do to it, measured.
Read moreBackground jobs, caching and WebSockets without Redis - how the solid_* adapters keep your stack to a single database, and when you'd add Redis back.
Read moreA practical, no-fluff plan to go from idea to a paying-ready Rails app in two days - using the boilerplate's built-in auth, billing and onboarding.
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