array-splice

问题 I want to remove all element from array except the element of array at 0th index ["a", "b", "c", "d", "e", "f"] Output should be a 回答1: You can set the length property of the array. var input = ['a','b','c','d','e','f']; input.length = 1; console.log(input); OR, Use splice(startIndex) method var input = ['a','b','c','d','e','f']; input.splice(1); console.log(input); OR use Array.slice method var input = ['a','b','c','d','e','f']; var output = input.slice(0, 1) // 0-startIndex, 1 - endIndex

问题 I want to remove all element from array except the element of array at 0th index ["a", "b", "c", "d", "e", "f"] Output should be a 回答1: You can set the length property of the array. var input = ['a','b','c','d','e','f']; input.length = 1; console.log(input); OR, Use splice(startIndex) method var input = ['a','b','c','d','e','f']; input.splice(1); console.log(input); OR use Array.slice method var input = ['a','b','c','d','e','f']; var output = input.slice(0, 1) // 0-startIndex, 1 - endIndex

问题 I faced the situation that splicing arrays with preserved-keys, so I made the following function. I reached the solution that wrapping each items with array, but there seems to be some memory-inefficient statements. Have you any ideas? Thank you. array_splice_pk This preserves keys, differently from array_splice . Overview: &$input -> same as array_splice one. $key -> target key. $use_key_as_offset -> use $key parameter as a numeric offset . $length -> same as array_splice one. $replacement -

问题 I faced the situation that splicing arrays with preserved-keys, so I made the following function. I reached the solution that wrapping each items with array, but there seems to be some memory-inefficient statements. Have you any ideas? Thank you. array_splice_pk This preserves keys, differently from array_splice . Overview: &$input -> same as array_splice one. $key -> target key. $use_key_as_offset -> use $key parameter as a numeric offset . $length -> same as array_splice one. $replacement -

问题 I faced the situation that splicing arrays with preserved-keys, so I made the following function. I reached the solution that wrapping each items with array, but there seems to be some memory-inefficient statements. Have you any ideas? Thank you. array_splice_pk This preserves keys, differently from array_splice . Overview: &$input -> same as array_splice one. $key -> target key. $use_key_as_offset -> use $key parameter as a numeric offset . $length -> same as array_splice one. $replacement -

问题 I am writing some PHP code that's kind of like this: foreach($filter[1] as $reject){ $reject_processed = preg_replace('~\s~','',strtolower($filter[1][$reject])); if(array_key_exists($reject_processed,$list_of_common_replacements)){ $filter[0][] = $list_of_common_replacements[$reject_processed]; $filter[1] = array_splice($filter[1],$reject,1) } } It's supposed to search through a list of rejected values (filter[1]), find if a replacement exists, then (if so) add the replacement to the list of

问题 I'm trying to do something but I can't find any solution, I'm also having some trouble putting it into works so here is a sample code, maybe it'll be enough to demonstrate what I'm aiming for: $input = array ( 'who' => 'me', 'what' => 'car', 'more' => 'car', 'when' => 'today', ); Now, I want to use array_splice() to remove (and return) one element from the array: $spliced = key(array_splice($input, 2, 1)); // I'm only interested in the key... The above will remove and return 1 element (third

问题 I have a dropdown values from $scope.role from there I am able to select and remove the respective value from that dropdown and moving the values to $scope.multiRoles array . Which I am also displaying as tags .Which can be find in AddRole() Now when I click close button in the tag, I am calling removeRoles() , where I am splicing the array which I am selected. But I need to splice them and move them back to $scope.role . Till removing value it works fine , but I am unable to move it back to

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: How to split an array based on a certain value? Here is an example array I want to split: (0, 1 ,2 ,3, 0, 4, 5) How do I split it in 2 array like this? (0, 1 ,2 ,3) (0, 4, 5) Basically I want to check if the value of an element is zero and then create an array of all the elements until I find another zero. I can't seem to come up with a solution to this. 回答1: $array = array(0, 1 ,2 ,3, 0, 4, 5); $result = array(

问题 All works perfectly, but when there are more one items in the cart.. and the the quantity of any item (except the last item in list) is changed the code below goes into infinite loop, i have verified it by placing print_r statements in it. The part of the code that goes into infinite loop: if (isset($_POST['item_to_adjust']) && $_POST['item_to_adjust'] != "") { // execute some code $item_to_adjust = $_POST['item_to_adjust']; $quantity = $_POST['quantity']; $quantity = preg_replace('#[^0-9]#i'