2715. Timeout Cancellation
Intuition\nThe code appears to be implementing a cancellable function. The idea is to create a function (cancellable) that takes another function (fn), its argu
# Intuition\nThe code appears to be implementing a cancellable function. The idea is to create a function (`cancellable`) that takes another function (`fn`), its arguments (`args`), and a time delay (`t`). This cancellable function returns a new function that, when called, will execute the original function (`fn`) after a specified time delay (`t`). However, the execution can be canceled if another function (returned by `cancellable`) is invoked within a certain time frame.\n\n# Approach\nThe `cancellable` function uses `setTimeout` to delay the execution of the provided function (`fn`). It also returns a cancel function, which clears the timeout, preventing the original function from executing if invoked before the timeout.\n\nIn the provided example:\n- The `fn` function multiplies its argument by 5.\n- The `args` array contains the arguments for `fn`.\n- The time delay is specified by `t`.\n- The `log` function is a helper function that records the time elapsed since the start and the result of calling `fn` with the provided arguments. This information is stored in the `result` array.\n\n# Complexity\n- Time complexity: O(1) for the cancellable function. The time complexity of executing the provided function (`fn`) depends on the function itself.\n- Space complexity: O(1) for the cancellable function. The space complexity of storing results depends on the number of function calls and the data stored in the `result` array.\n\n# Code\n\n\n```javascript\n/**\n * @param {Function} fn\n * @param {Array} args\n * @param {number} t\n * @return {Function}\n */\nvar cancellable = function(fn, args, t) {\n  let timeoutId;\n\n  const cancelFn = () => {\n    clearTimeout(timeoutId);\n  };\n\n  timeoutId = setTimeout(() => {\n    const result = fn(...args); \n    \n  }, t);\n\n  return cancelFn;\n};\n\n\n```
['JavaScript']