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* *elioat2024-08-252-0/+53
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* *elioat2024-07-061-3/+2
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* *elioat2022-10-023-0/+16
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-01-08 16:41:29 +0000
class="p">(pattern === value || (typeof pattern === 'function' && pattern(value))) { return action(value); } } throw new Error("No match found"); } const isNumber = x => typeof x === 'number'; const isString = x => typeof x === 'string'; const result = match( 42, [1, () => "one"], [2, () => "two"], [isNumber, x => `number: ${x}`], [isString, x => `string: ${x}`] ); console.log(result); // slightly fancier pattern matching const matchObject = (value, ...patterns) => { for (let [pattern, action] of patterns) { if (typeof pattern === 'function' && pattern(value)) { return action(value); } else if (typeof pattern === 'object' && pattern !== null) { let isMatch = true; for (let key in pattern) { if (pattern[key] !== value[key]) { isMatch = false; break; } } if (isMatch) return action(value); } else if (pattern === value) { return action(value); } } throw new Error("No match found"); } const isAdult = person => person.age >= 18; const isChild = person => person.age < 18; const personResult = matchObject( { name: 'Rachel', age: 30 }, [{ name: 'Rachel', age: 30 }, () => "Rachel, 30 years old"], [isAdult, person => `${person.name} is an adult`], [isChild, person => `${person.name} is a child`] ); console.log(personResult); // Basic Matching: Checking if a value directly matches a pattern. // Function Patterns: Uses functions to define more complex matching logic. // Object Patterns: Match objects based on their properties.