Removing an Item from a List (by value)

Описание	Как удалить элемент из списка по значению этого элемента, а не по его индексу? В статье рассматривается пример на Scratch
Область знаний	Информатика, Психология
Область использования (ISTE)	Computational Thinker
Возрастная категория	9
Поясняющее видео
Близкие рецепту понятия
Среды и средства для приготовления рецепта:	Scratch

Using the delete () of () list block, one can remove a specified item from a list based on its numerical value in the list, but there is no individual block that removes an item (or multiple items) which contains a specified string from a list. This tutorial will show how to remove an item from a list based on the string stored within the item.

Project Situations

There could be a number of purposes why one would need to remove an item from a list based on its value (or string). The following are possible situations:

• A list contains of items found, and the items are in random order based on when they were discovered; later, one item is given away, and the list must remove that specified item based on its name from the list.
• A grocery list being broken down as items are bought.

Code

The following script can be used to program this.

This script will find the index of the first "ruby" and delete that item.

This second method removes all items that are the specified string instead of just the first:

This script repeats deleting the first item that is "ruby" until it deletes all of the "ruby" items.