List Contains

List Contains

Type: list-contains  ·  Package: Collections Activities v1.0.0  ·  Output: boolean

Checks if a list contains an element and stores true/false in a variable. Useful to avoid duplicates or validate membership.

How it works

Search for item within list and save the result (true if present) to outputVariable.

Required parameters

Parameter	Editor	Description
list	expression	The list.
item	expression	The element to search for.
outputVariable	nombre de variable	Variable where to save the result.

Example

Avoid adding a repeated element:

List Contains   list = = procesados   item = = id   outputVariable = yaEsta
If   condition = = !yaEsta
 └─ then:
      Add to List   list = = procesados   item = = id

Equivalent in expression

= list.Contains(valor) gives the same result in an expression.

Related activities

• Add to List — add the item if it is not there.
• List Count — contar elementos.