Selector

Definitions

1. A pattern used to match and target elements — in CSS for styling, in Objective-C for method dispatch, or in state management libraries for deriving computed values from a store.

   In plain English: A pattern that picks out specific things — like CSS selectors that say which HTML elements get a particular style.

   Example: "The CSS selector .card > h2:first-child targets only direct h2 children of card elements."

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