<pre class="shiki github-dark shaku"><code>// This is a JavaScript coding problem from BFE.dev /** * @param { (...args: any[]) =&gt; any } fn * @returns { (...args: any[]) =&gt; any } */function curry(fn) { return function curried(...args) { if (args.length &gt;= fn.length) { return fn.apply(this, args); } else { return function(...args2) { return curried.apply(this, args.concat(args2)); } } }}// usage testsconst join = (a, b, c) =&gt; { return `${a}_${b}_${c}`}const curriedJoin = curry(join)curriedJoin(1, 2, 3) // '1_2_3'curriedJoin(1)(2, 3) // '1_2_3'curriedJoin(1, 2)(3) // '1_2_3'</code></pre>

a Custom Curry Function in JavaScript

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Currying is a useful technique used in JavaScript applications. Please implement a curry() function, which accepts a function and return a curried one…

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2. implement curry() with placeholder support

1. implement curry()