<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 curriedFunc(...args) { if (args.length &gt;= fn.length) { return fn(...args) } else { return function (...nextArgs) { return curriedFunc(...args, ...nextArgs) } } }}// const fn = (a, b, c) =&gt; {// return `${a}_${b}_${c}`// }// const curriedJoin = curry(fn)// curriedJoin(1,2,3)// curriedJoin(1),(2,3)// curriedJoin(1,2),(3)</code></pre>

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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…

lodash

2. implement curry() with placeholder support

1. implement curry()