functions as parameters, higher-order functions

PHOTO

Tue Aug 13 2024 17:36:50 GMT+0000 (Coordinated Universal Time)

const addTwo = num => {
  return num + 2;
}

const checkConsistentOutput = (func, val) => {
  let checkA = val + 2;
  let checkB = func(val);
  if (checkA === checkB) {
    return checkB;
  } else {
    console.log(`inconsistent results`);
  }
}

console.log(checkConsistentOutput(addTwo, 2));

COPY

The basic function addTwo() takes whatever parameter for num is and adds 2. The higher-order function checkConsistentOutput uses this function as the first parameter and an integer of your choosing for the second parameter. The integer will have 2 added manually for checkA while checkB uses the addTwo() function. The results should be the same between both and line 8 checks this in the conditional--if it's true, then the result is returned and if it's false it logs to console our message. The final code on line 15 shows the higher-order function in use. It should display in the console whatever your integer was plus 2.

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@thecowsays

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@thecowsays

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Functions

@thecowsays

creating a function w/ multiple parameters function returns boolean using reduce method on a string array using reduce on even values of an array creating a simple function function looping through array with if-else function comparing two arrays and returning a Boolean functions as parameters, higher-order functions callback function syntax using forEach iterator method

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functions as parameters, higher-order functions

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