Logo

Programming-Idioms

Remove at most 1 item from list items, having the value x.
This will alter the original list or return a new list, depending on which is more idiomatic.
If there are several occurrences of x in items, remove only one of them. If x is absent, keep items unchanged.
New implementation

Be concise.

Be useful.

All contributions dictatorially edited by webmasters to match personal tastes.

Please do not paste any copyright violating material.

Please try to avoid dependencies to third-party libraries and frameworks.

Other implementations
(let [[n m]
      (split-with (partial not= x) items)]
  (concat n (rest m)))
erase(items, x);
using System.Collections.Generic;
items.Remove(x);
import std.algorithm;
items = items.remove(items.countUntil!(a => a == x));
items.remove(x);
List.delete(items, x)
integer, dimension(:), allocatable :: items

i = findloc(items, x)
if (i /= 0) items = [items(1:i-1), items(i+1:)]
for i, y := range items {
	if y == x {
		copy(items[i:], items[i+1:])
		items[len(items)-1] = nil
		items = items[:len(items)-1]
		break
	}
}
import "slices"
func removeFirstByValue[S ~[]T, T comparable](items *S, x T) {
	if i := slices.Index(*items, x); i != -1 {
		*items = slices.Delete(*items, i, i+1)
	}
}
import "slices"
func removeFirstByValue[S ~[]T, T comparable](items *S, x T) {
	for i, y := range *items {
		if y == x {
			*items = slices.Delete(*items, i, i+1)
			return
		}
	}
}
for i, y := range items {
	if y == x {
		items = append(items[:i], items[i+1:]...)
		break
	}
}
import Data.List
delete x items
const idx = items.indexOf(x)
if (idx !== -1) items.splice(idx, 1)
import java.util.List;
items.stream().findFirst().filter(item -> "x".equals(item)).ifPresent(removeIndex -> items.remove(removeIndex));
import java.util.ArrayList;
T value;
for(int index = 0; index < items.size(); index++) {
	value = items.get(index);
	if(value.equals(x)) {
		items.remove(index);
		break;
	}
}
$list_position = array_search($x, $items);
$specific_item = $items[$position];
unset($specific_item);
uses classes;
i := items.IndexOf(x);
if i <> -1 then
  items.delete(i);
use List::UtilsBy qw(extract_first_by);
extract_first_by { $x eq $_ } @items;
items.remove(x)
i = items.index(x)
items.delete_at(i) unless i.nil?
if let Some(i) = items.first(&x) {
    items.remove(i);
}