elc49

function sum_even(a){
  var sum = 0;
  for (var i = 0; i < a.length; i++){
    if(a[i] % 2 === 0){
      sum += a[i];
    }
  }
  return sum;
}

elc49

{
  "extends": ["prettier", "airbnb", "prettier/react"],
  "plugins": ["prettier"],
  "parser": "babel-eslint",
  "parserOptions": {
      "ecmaVersion": 6,
      "sourceType": "module",
      "ecmaFeatures": {
        "impliedStrict": true,
        "jsx": true

elc49

type ConditionIterator func(interface{}, int) bool

func Some(array []interface{}, iterator ConditionIterator) bool {
	res := false
	for index, data := range array {
		res = res || iterator(data, index)
	}
	return res
}