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40 lines
1.1 KiB
TypeScript
40 lines
1.1 KiB
TypeScript
// Loaded from https://deno.land/x/ramda@v0.27.2/source/unary.js
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import _curry1 from './internal/_curry1.js';
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import nAry from './nAry.js';
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/**
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* Wraps a function of any arity (including nullary) in a function that accepts
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* exactly 1 parameter. Any extraneous parameters will not be passed to the
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* supplied function.
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*
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* @func
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* @memberOf R
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* @since v0.2.0
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* @category Function
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* @sig (a -> b -> c -> ... -> z) -> (a -> z)
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* @param {Function} fn The function to wrap.
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* @return {Function} A new function wrapping `fn`. The new function is guaranteed to be of
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* arity 1.
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* @see R.binary, R.nAry
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* @example
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*
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* const takesTwoArgs = function(a, b) {
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* return [a, b];
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* };
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* takesTwoArgs.length; //=> 2
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* takesTwoArgs(1, 2); //=> [1, 2]
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*
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* const takesOneArg = R.unary(takesTwoArgs);
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* takesOneArg.length; //=> 1
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* // Only 1 argument is passed to the wrapped function
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* takesOneArg(1, 2); //=> [1, undefined]
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* @symb R.unary(f)(a, b, c) = f(a)
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*/
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var unary = _curry1(function unary(fn) {
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return nAry(1, fn);
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});
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export default unary;
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