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The Best Salesforce Apex programming tutorials

This blog discusses a series of Apex programming best practices for Salesforce developers and how to learn salesforce development. It will assist them in becoming better developers and improving their skills to match those of industry specialists.

In the multi-tenant cloud, Salesforce provides a powerful core set of services to all customers. You get access to the same tools regardless of your size. Salesforce has set regulations to ensure that everyone may get the most out of Salesforce.com by sharing these resources with other customers. That’s why they’ve imposed some restrictions.

You should remember as a newbie that apex code is the backbone of whatever changes you make. It’s a complicated and reliable object-oriented Salesforce platform extension. You must adhere to several best training to improve your coding abilities. Read through these tips and Salesforce Apex tutorials to become a top-notch Salesforce developer, and then practice them until you’re a pro! 

Apex Code Tips Every Developer Must Know

The following is a list of the top best practices for running Salesforce apex code smoothly:

1. Outside of FOR loops, structured queries, and data manipulation language (DML) expressions perform better.

2. Make sure your code is nullified to guarantee that it can handle data from several records.

3. It’s easy to overlook a governor limit when running Apex, but with the Limits Apex Method, you can avoid reaching them in your code.

4. Before running the code, make sure it doesn’t go beyond any governor limits.

5. The heap limit exception can be avoided in several ways. A SOQL query for loop is one option. 

6. Never hard code IDs – they won’t function since even if Apex is deployed to two Salesforce environments, such as Dev/Prod, there’s no guarantee that IDs will be the same in both. If the record IDs change between contexts, the logic will be able to dynamically identify the correct data to act on and will not fail.

7. When establishing a class, it’s a good idea to utilize the “with sharing” keyword. This prevents the class’s instances from being accessed from outside the class.

8. In SOQL searches, you should utilize filters to limit the number of records returned. If you don’t, the query may return an excessive number of results, potentially exceeding the limit.

9. When inserting or updating entries, use collections; however, a single DML statement can only update 10,000 records in a single transaction.

10. When writing triggers on case objects, it is recommended that the trigger name be CaseTrigger. It’s also crucial to properly comment on your code so that any other programmer can grasp your logic.

11. For handling exceptions, Don’t forget to make use of catch blocks. You can use Apex to create code that responds to specific exceptions. 

12. If you’re doing a CRUD action, double-check the user who’s running the class’s field and object permissions. 

Some Best Practices for Triggers

Here are some pointers on how to use triggers in APEX code:

  1. Make Economical Use of Them: You have no control over which trigger is initiated first if you create numerous triggers on a single object. Second, each activated trigger is not given its governor limits. Instead, all active code, including any new triggers, shares the resources available.
  2. Use Apex Classes: When creating triggers, avoid using complex logic. Delegate the execution logic to Apex code-containing classes. Put your execution logic into Apex classes and have triggers executed in that class to make it easy to run tests and reuse code.
  3. Use a Helper Class: If your class or method provides functionality and/or state to numerous other classes or methods, make it a “helper” instead. Rework your code to use the same “helper” class or function across all scenarios rather than generating helpers for specific reasons.
  4. Maximum Efficiency: Triggers should be able to handle batches of up to 200 records if you’re using them to process huge batches of data.
  5. Instead of doing things one at a time, use collections: In database systems, it’s usually ideal to do things in batches rather than one at a time. Because of the amount of data being processed, an application can function faster by operating on entire collections of data rather than single items. As a result, it is preferable to execute DML statements on collections rather than individual records.
  6. Use Appropriate Names: If you use a similar naming scheme for all of your triggers, it will be simple to figure out which one accomplishes what. You can start the trigger with the object name and end it with any extra descriptive information. Consider AccountTrigger.

Some Apex Test Best Practices

The following are some recommendations for coding or testing in Salesforce:

  1. Use of Test.startTest and Test.stopTest: Code executed before Test.startTest and after Test.stopTest receives a different set of governor restrictions than code called between Test.startTest and Test.stopTest when running tests. This allows any data to be set up without compromising the governor restrictions accessible to the code being tested. 
  2. System.assertEquals Method: Every test function must utilize the System.assertEquals(expected, actual) method.
  3. Efficient Use of the seeAllData Parameter: Only use (seeAllData = true) in the test class if there’s a valid reason.
  4. Make Use Of The System When you need to test whether a function works well in different user contexts, use the System.runAs() method.

CONCLUSION

This brings us to the end of our conversation. I hope you can enhance your programming skills and make your code more legible, maintainable, and reusable by following the Salesforce.com Apex best practices and tutorials listed above. This article covers all you need to know to become a great developer. It will quickly turn a beginner into an intermediate coder. If you think your code is approaching governor restrictions, go to this blog. Keep coding and growing until then!

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