JAVASCRIPT

filter syntax

// Arrow function
filter((element) => { ... } )
filter((element, index) => { ... } )
filter((element, index, array) => { ... } )

// Callback function
filter(callbackFn)
filter(callbackFn, thisArg)

// Inline callback function
filter(function callbackFn(element) { ... })
filter(function callbackFn(element, index) { ... })
filter(function callbackFn(element, index, array){ ... })
filter(function callbackFn(element, index, array) { ... }, thisArg)

filter function

# filter function
l1=[10,20,30,40,50,60,70,80]
l2= [i for i in filter(lambda x:x>30,l1)]
print(l2)


# [40, 50, 60, 70, 80]
# filter takes a function and a collection. It returns a collection of every item for which the function returned True.

filter method

function filter(array, test) {
  let passed = [];
  for (let element of array) {
    if (test(element)) {
      passed.push(element);
    }
  }
  return passed;
}

console.log(filter(SCRIPTS, script => script.living));
// → [{name: "Adlam", …}, …]