How do I check if an element is in a set apex?
I wrote a method last night that creates a new custom object record that is related to an Account and a User. it works great however, it breaks when there is an already existing record for a user. After research I think I need a set to compare if the user value already exists then not run the logic.
I can't get the syntax right to compile and see if it works. Example code:
public static void createNPDAccountTeam(MapaccOwner) {
ListnpdAccTeamToInsert = new List Set(); existingAccTeam = new Set existingAccTeam.addAll([SELECT Id, User__c, Account__c FROM NPD_Account_Team__c WHERE Account__c IN: accOwner.keySet()]);();
for(Id accId : accOwner.keySet())
{
if(!existingAccTeam.contains(accId.User__c)
{
npdAccTeamToInsert.add(new NPD_Account_Team__c(
Account__c = accId,
User__c = accOwner.get(accId),
Role__c = 'Custom',
Team_Member_Status__c = 'Active'
));
}
}
insert npdAccTeamToInsert;
}
I get the error on line 10:
Unexpected token '{'
What am I doing wrong? I know that it does not need a ; at the end of the if line but I am not sure why it will not save.
To check if an element is in set apex, please close the if condition with extra parens.
if(!existingAccTeam.contains(accId.User__c))
{
}
Answer (1)
In Salesforce Apex, checking if an element is in a set is straightforward using the contains method provided by the Set class. This method returns a Boolean value indicating whether the specified element exists in the set.
Example Usage
Below are detailed steps and examples to demonstrate how you can check if an element is in a set in Apex.
Step-by-Step Example:
Create a Set
First, create a set and add some elements to it.
Set fruits = new Set{'Apple', 'Banana', 'Orange'};
Check If an Element Exists in the Set
Use the contains method to check if a specific element is in the set.String fruitToCheck = 'Banana';
Boolean isPresent = fruits.contains(fruitToCheck);if (isPresent) {
System.debug(fruitToCheck + ' is in the set.');
} else {
System.debug(fruitToCheck + ' is not in the set.');
}ull Example in an Apex Class
Here is a complete example within an Apex class:public class SetExample {
public static void checkElementInSet() {
// Create a set and add elements to it
Set fruits = new Set{'Apple', 'Banana', 'Orange'};
// Element to check
String fruitToCheck = 'Banana';
// Check if the element is in the set
Boolean isPresent = fruits.contains(fruitToCheck);
// Output the result
if (isPresent) {
System.debug(fruitToCheck + ' is in the set.');
} else {
System.debug(fruitToCheck + ' is not in the set.');
}
}
}Testing the Code
To test the code, you can call the checkElementInSet method from the Developer Console:
SetExample.checkElementInSet();