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35 lines
940 B
TypeScript
35 lines
940 B
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/on.js
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import curryN from './internal/_curryN.js';
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/**
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* Takes a binary function `f`, a unary function `g`, and two values.
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* Applies `g` to each value, then applies the result of each to `f`.
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*
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* Also known as the P combinator.
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*
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* @func
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* @memberOf R
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* @category Function
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* @sig ((a, a) -> b) -> (c -> a) -> c -> c -> b
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* @param {Function} f a binary function
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* @param {Function} g a unary function
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* @param {any} a any value
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* @param {any} b any value
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* @return {any} The result of `f`
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* @example
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*
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* const eqBy = R.on((a, b) => a === b);
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* eqBy(R.prop('a'), {b:0, a:1}, {a:1}) //=> true;
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*
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* const containsInsensitive = R.on(R.contains, R.toLower);
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* containsInsensitive('o', 'FOO'); //=> true
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* @symb R.on(f, g, a, b) = f(g(a), g(b))
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*/
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var on = curryN(4, [], function on(f, g, a, b) {
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return f(g(a), g(b));
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});
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export default on;
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