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parent and child relationshiop

ChildRelationship

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define the width on apex:pageBlockTable columns

columnsWidth=”60%,20%,10%,10%”

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Six Tips to Great Unit Tests

Six Tips to Great Unit Tests

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How to test for an exception(‘addError’) in a Trigger

I have a trigger, which detects error conditions and feeds errors to the class or field. This gives a nice result interactively, in the GUI. But how do I write test code to catch these errors ? Is there a System.AssertException(), or the equivalent ? The idea is to: a. Write code in the test […]

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Test.startTest() and Test.stopTest()

The test method contains the Test.startTest() and Test.stopTest() method pair, which delimits a block of code that gets a fresh set of governor limits. In this test, test-data setup uses two DML statements before the test is performed. To test that Apex code runs within governor limits, isolate data setup’s limit usage from your test’s. […]

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Custom Labels Apex Class

Source Link In Apex use the System.Label.Label_name syntax. You can access these custom labels like this:

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objects can’t be passed as arguments to future methods

The reason why objects can’t be passed as arguments to future methods is because the object can change between the time you call the method and the time that it actually executes. Remember, future methods are executed when system resources become available. In this case, the future method may have an old object value when […]

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Apex REST annotations

@RestResource(urlMapping=’/yourUrl’) @HttpDelete @HttpGet @HttpPatch @HttpPost @HttpPut

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Asynchronous Apex

In a nutshell, asynchronous Apex is used to run processes in a separate thread, at a later time. An asynchronous process is a process or function that executes a task “in the background” without the user having to wait for the task to finish. Here’s a real-world example. Let’s say you have a list of […]

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Apex Variables

Null Variables and Initial Values If you declare a variable and don’t initialize it with a value, it will be null. In essence, null means the absence of a value. You can also assign null to any variable declared with a primitive type. For example, both of these statements result in a variable set to […]

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