Removing duplicates from a JavaScript array. [...new Set (arr)] is the one-liner for primitives, but it silently does nothing on arrays of objects because Set compares by reference, so the object case ...

Objects and arrays work. But they have limits. Need a key that's not a string? Object can't do it. Need a list with no duplicates? Array won't stop you. But JavaScript has two hidden gems: Map and Set ...

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Comprehensive guide to AI agent engineering: how 30+ frameworks actually work under the hood. Context rot, compaction, system prompt assembly, SOUL.md, agent loops, memory systems, tool sprawl, MC ...