Apex Reference Guide

Apex Reference Guide
Release Notes
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ChatterAnswers Namespace
CommerceBuyGrp Namespace
CommerceExtension Namespace
CommerceOrders Namespace
CommercePayments Namespace
CommerceTax Namespace
ComplianceMgmt Namespace
Compression Namespace
ConnectApi Namespace
Context Namespace
Database Namespace
Datacloud Namespace
DataRetrieval Namespace
DataSource Namespace
DataWeave Namespace
Dom Namespace
embeddedai Namespace
EventBus Namespace
ExternalService Namespace
Flow Namespace
Flowtesting Namespace
flowuiruntime Namespace
FormulaEval Namespace
fsccashflow Namespace
Functions Namespace
ise_bots_apex Namespace
IssueCreditMemo Namespace
ind_mfg_sample_mgmt_apex Namespace
industriesNlpSvc
IndustriesDigitalLending Namespace
Invocable Namespace
InvoiceWriteOff Namespace
IsvPartners Namespace
KbManagement Namespace
LxScheduler Namespace
Messaging Namespace
Metadata Namespace
PlaceQuote Namespace
Pref_center Namespace
Process Namespace
QuickAction Namespace
renew_assets_summary Namespace
Reports Namespace
RevSignaling Namespace
RevSalesTrxn Namespace
RichMessaging Namespace
RulesAppln Namespace
runtime_industries_cpq Namespace
runtime_industries_insurance Namespace
Schema Namespace
Search Namespace
setup_flow_performance Namespace
Sfc Namespace
Sfdc_Checkout Namespace
Sfdc_Enablement Namespace
sfdc_surveys Namespace
sfdw Namespace
sfsqlquery Namespace
Site Namespace
Slack Namespace
Support Namespace
System Namespace
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
VisualEditor Namespace
Wave Namespace
Appendices
Apex Versioned Behavior Changes
Shipping Invoice Example
Reserved Keywords
Documentation Typographical Conventions
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Documentation Typographical Conventions

Apex and Visualforce documentation uses these typographical conventions.
Convention Description
Courier font In descriptions of syntax, a monospace font indicates items that you should type as shown, except for brackets. For example: Public class HelloWorld
Italics In descriptions of syntax, italics represent variables. You supply the actual value. In the following example, three values must be supplied: datatype variable_name [ = value];

If the syntax is bold and italic, the text represents a code element that needs a value supplied by you, such as a class name or variable value:

public static class YourClassHere { ... }
Bold Courier font In code samples and syntax descriptions, a bold courier font emphasizes a portion of the code or syntax.
< > In descriptions of syntax, less-than and greater-than symbols (< >) are typed exactly as shown. For an example, see Angle brackets (< >) typed exactly as shown.
{ } In descriptions of syntax, braces ({ }) are typed exactly as shown. For an example, see Braces ({ }) typed exactly as shown.
[ ] In descriptions of syntax, anything included in brackets is optional. In the following example, specifying value is optional. For an example, see Brackets ([ ]) indicating optional items.
| In descriptions of syntax, the pipe sign means “or”. You can do one of the following (not all). In the following example, you can create a new unpopulated set in one of two ways, or you can populate the set. For an example, see Pipe symbol (|) meaning “or”.

Angle brackets (< >) typed exactly as shown

1<apex:pageBlockTable value="{!account.Contacts}" var="contact">
2   <apex:column value="{!contact.Name}"/>
3   <apex:column value="{!contact.MailingCity}"/>
4   <apex:column value="{!contact.Phone}"/>
5</apex:pageBlockTable>

Braces ({ }) typed exactly as shown

1<apex:page>
2    Hello {!$User.FirstName}!
3</apex:page>

Brackets ([ ]) indicating optional items

1data_type variable_name [ = value];

Pipe symbol (|) meaning "or"

1Set<data_type> set_name 
2   [= new Set<data_type>();] |
3   [= new Set<data_type{value [, value2. . .] };] |
4   ;