Created
September 3, 2020 17:46
-
-
Save SarahNicewander/bc0926c156e5b82a66364c0a2f5b1de3 to your computer and use it in GitHub Desktop.
WeekThreeHomework
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public with sharing class WeekThreeHomework { | |
public static void homeworkAssignmentMethod() { | |
//Read through the setup below and then complete the code following the prompts. When you're done, make sure to compile (save) your work | |
//Open Execute Anonymous in the Developer Console and execute your code by typing in: WeekThreeHomework.homeworkAssignmentMethod(); | |
//Read through the debug statements to make sure you're done your work correctly. | |
//************************************************************************************************************ | |
// 1. Add two more whole numbers to this list using .add() | |
List<Integer> numberList = new List<Integer>{ 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 }; | |
numberList.add(22); | |
numberList.add(11); | |
//Checking our work: | |
System.debug('This number should be 12: ' + numberList.size()); | |
//************************************************************************************************************ | |
// 2. Create a new Lead and insert it in the database. (If you're stuck, look back at the WeekThreeClassExercises class for an example of creating a new SObject Record) | |
//You can give it any values you like, but remember that last name and Company are required fields (both are simple text fields.) | |
Lead LeadA = new Lead(); | |
LeadA.FirstName = 'Jessica'; | |
LeadA.LastName = 'Day'; | |
LeadA.Company = 'Academy of Banyon'; | |
LeadA.Title = 'Educator'; | |
Insert LeadA; | |
//Checking our work: | |
System.debug('We should see One DML was executed: ' + Limits.getDMLRows()); | |
//************************************************************************************************************ | |
//3. For the loop that is commented out below, update the while condition by replacing the ?? so that the loop runs 5 times | |
//delete the slashes so that the loop is no longer commented out and compile the class. | |
//Can you add a debug statement to print out the counter value every time it runs through the loop? | |
Integer counter = 0; | |
//while (counter < 5) { | |
counter++; //without this line to increment counter, we'd have an infinite loop! | |
//} | |
System.debug('Done with the loop, it ran: ' + counter + ' times.'); | |
} | |
public static void forLoopsExercise() { | |
//1. Let's review iterating over a list of stuff. How about Strings? | |
List < String > myStringList = new List < String >{'red', 'yellow', 'green', 'blue'}; | |
// using for loop syntax, loop over the list of strings, printing each one out to the debug log. | |
For (String str : myStringList){ | |
system.debug('String in our loop = ' + str); | |
} | |
// 2. How about some SObjects? | |
// I'll do the data setup here to create a list of contacts that all have a first name: | |
Contact c1 = new Contact(FirstName='Sam'); | |
Contact c2 = new Contact(FirstName='Diane'); | |
Contact c3 = new Contact(FirstName='Coach'); | |
List < Contact > myContacts = new List < Contact >{c1,c2,c3}; | |
// Your turn! Using a for loop, print out the first name of each contact on a different line | |
//hint, you will need to use dot notation! | |
For (Contact c : myContacts){ | |
system.debug('Contact = ' + c.FirstName); | |
} | |
//Bonus question to ponder: Do these contacts actually exist in our database? | |
//What would it take to get them there? | |
//DML! Insert! | |
//Insert c1; | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment