artminor

trigger LeadTrigger on Lead (After Update) {
    Map<Id, Lead> leadsToUpdate = new Map<Id, Lead>();
    
    List<Competitor__mdt> competitorRecords = [Select Label from Competitor__mdt];//Retrieve our Custom Metadata Records
    List<String> competitorNames = new List<String>();//Instantiate an empty list to hold the names of our competitors
    for(Competitor__mdt record : competitorRecords){//Loop through the Custom Metadata records our query returned
        competitorNames.add(record.Label);//Add them to our empty list
    }
    
    for(Integer i = 0 ; i < trigger.new.size() ; i++){

artminor

@isTest (seeAllData = true)
public class SOQLqueries {
    static testMethod void relationshipQueries(){
        
        //Child-to-Parent queries are easy. Simply use the API Name of the lookup field to the parent object
        //and use dot notation to specify the field on that object you want
        List<Contact> conAccts = [SELECT FirstName, LastName, Account.Name FROM Contact];
        
        //FIX ME! Use a query with a WHERE filter to only return Contacts from the Account named 'sForce'
        

artminor

@isTest
public class Collections {
    static testMethod void Lists(){
        //LISTS ARE AN ORDERED COLLECTION OF DATA
        
        //How to instantiate a List with some pre-defined values
        String someword = 'thread';
        List<String> threeStrings = new List<String>{'rope', 'twine', someword};
        
        //Lists have methods that allow us to evaluate or manipulate them