Delete specific element from array

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I want to delete an element from an array property on a node using Cypher.

I know the value of the element I want to delete, but not its index.

e.g. suppose I have a node like

({some_array: ["apples", "oranges"]})

I want a query like (pseudocode):

MATCH (n)
REMOVE "oranges" IN n.some_array

Cypher doesn't have functions for mutating arrays, but you can create a new array with "oranges" removed using FILTER:

MATCH (n)
WHERE HAS(n.some_array)
SET n.array = FILTER(x IN n.some_array WHERE x <> "oranges");

How can I remove a specific item from an array?, If you don't specify any elements, splice() will only remove elements from the array. Return value. An array containing the deleted elements. If only one element is  Ask the user to enter the total number of elements to add. Take all inputs from the user and insert it in an array. Ask the user to enter the element that needs to be removed. Check if the element exist in the array or not. If it does,move the array to one step left starting from the element position.

Sometimes we can get an error in above Query as "Expected exactly one statement per query but got: 2" to remove this we can also use as

match (t:test) 
with t,FILTER(x IN t.some_array WHERE x <> "ORANGES") as filterdList
set t.array=filterdList
return t

Deleting array elements in JavaScript - delete vs splice, Removing One Element Using shift()​​ The array methods shift() and unshift() work on the beginning of an array instead of the end of an array, as is the case with push() and pop(). The shift() command will remove the first element of the array and the unshift() command will add an element to the beginning of the array. Step by step descriptive logic to remove element from array. Move to the specified location which you want to remove in given array. Copy the next element to the current element of array. Which is you need to perform array[i] = array[i + 1]. Repeat above steps till last element of array. Finally decrement the size of array by one.

The FILTER function is deprecated:

https://neo4j.com/docs/cypher-manual/current/functions/list/#functions-filter

They consider using [variable IN list WHERE predicate] instead. You just have to erase the filter() by brackets:

MATCH (n)
WHERE HAS(n.some_array)
SET n.array = [x IN n.some_array WHERE x <> "oranges"];

Worked in my case perfectly

JavaScript: Remove Element from an Array, Delete an element from array (Using two traversals and one traversal). Given an array and a Duration: 3:07 Posted: Dec 20, 2017 C program to delete an element from an array. C program to delete an element in an array: This program deletes or removes an element from an array. A user will enter the position at which the array element deletion is required. Deleting an element does not affect the size of the array.

Delete an element from array (Using two traversals and one , This method will remove n number of elements from the specific index. MDN: The splice() method changes the contents of an array by removing  Given an array elements and the task is to remove the specific value element from the array with the help of JQuery. There are two approaches that are discussed below: Approach 1: We can use the not() method which removes the element that we want.

Different ways to remove elements from an array in JavaScript, If you do not specify any elements, splice() will only remove elements If only one element is removed, an array of one element is returned. The splice method can be used to add or remove elements from an array. The first argument specifies the location at which to begin adding or removing elements. The second argument specifies the number of elements to remove. The third and subsequent arguments are optional; they specify elements to be added to the array.

Array.prototype.splice(), Suppose you have an array, and you want to remove an item in position i . One method is to use slice() : const items = ['a'  I want to write something that removes a specific element from an array. I know that I have to for loop through the array to find the element that matches the content.. Let's say that I have an array of emails and I want to get rid of the element that matches some email string.

Comments
  • Yes Vipul, but can you please tell me why this error occurs.