1. Home
  2. Python

Javascript splice without changing array

Code examples

0
0

Remove list element without mutation 

I assume you mean that you want to create a new list without a given element, 
instead of changing the original list. One way is to use a list comprehension:

m = ['a', 'b', 'c']
n = [x for x in m if x != 'a']
n is now a copy of m, but without the 'a' element.

Another way would of course be to copy the list first

m = ['a', 'b', 'c']
n = m[:]
n.remove('a')
If removing a value by index, it is even simpler

n = m[:index] + m[index+1:]
0
0

javascript splice without changing array 

var myArray = ["one", "two", "three"];
var cloneArray = myArray.slice();

myArray.splice(1, 1);

console.log(myArray);
console.log(cloneArray);
0
0

how to replace array element in javascript without mutation 

function replaceAt(array, index, value) {
  const ret = array.slice(0);
  ret[index] = value;
  return ret;
}
const newArray = replaceAt(items, index, "J");

Similar pages

Similar pages with examples

javascript splice without changing array
Remove list element without mutation

In other languages

This page is in other languages

Русский
..................................................................................................................
Ссылка
Italiano
..................................................................................................................
Link
Polski
..................................................................................................................
Link
Română
..................................................................................................................
Legătură
한국어
..................................................................................................................
링크
हिन्दी
..................................................................................................................
लिंक
Français
..................................................................................................................
Lien
Türk
..................................................................................................................
Atıf
Česk
..................................................................................................................
Odka
Português
..................................................................................................................
Referênci
ไทย
..................................................................................................................
เชื่อมโยง
中文
..................................................................................................................
链接
Español
..................................................................................................................
Referencia
Slovenský
..................................................................................................................
Odkaz
Балгарскі
..................................................................................................................
Спасылка
Íslensk
..................................................................................................................
Link

Popular in the category

Popular pages with examples in the category

python looping with index
for loop shorthand python
get index in for in loop python
loop_id.py
fforeveer loop python
python loop array of array with index
how to code a jumping function in python
fibo with for loop python
python loop array with index
python loop over s3 objects]
for i in range without i
how to index the variables in a loop python
for i in a for j in a loop python
for range in index
how to run a for loop backwards in python
for loop in range of list