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lightning:map component lightning:map introduced in winter 19 which can be use display a map of one or more locations using Google Maps. We can pass markers to the component to define the locations to map. A marker can be a coordinate pair of latitude and longitude, or a set of address elements: City, Country, PostalCode, State, and Street. This component requires API version 44.0 and later. lightning:map has required attribute mapMarkers which accepts array of markers that indicate location. A market contains Location information:  This can be a coordinate pair of latitude and longitude, or an address composed of address elements. Descriptive information:  This is information like title, description and an icon which is information relevant to the marker but not specifically related to location. Example Create a new Object called 'Tower' with two new custom fields 1. Field Label: State     Type: Master-Detail (Account) 2. Field Label: Locati...

Inherited Sharing in Apex Inherited Sharing is available with Salesforce Winter'19 release. Use Inherited sharing keyword on apex class which allows the class to run in sharing mode of class that called it. Inherited sharing ensures that our apex code is not used in unexpected or insecure way. An Apex class with inherited sharing runs as with sharing when used as a Visualforce page controller, Apex REST service, or an entry point to an Apex transaction. If the class is used as the entry point to an Apex transaction, an omitted sharing declaration runs as without sharing. However, inherited sharing ensures that the default is to run as with sharing. A class declared as inherited sharing runs only as without sharing when explicitly called from an already established without sharing context. Example: We have declares Apex class with inherited sharing and a visualforce invocation of that Apex code. Because of the 'inherited sharing' declaration, only contacts for which...

Lightning Web Component: Render elements conditionally to render HTML conditionally we will use if:true|false directive. Directives are special HTML attributes that add dynamic behavior to HTML templates. below are the list of directive:   1. for:each={array} : use this directive to iterate over an array and render a list. 2. for:item= "currentItem" : Use this directive to access th e current items where currentItem is an identifier that model injects into the current scope. 3. for:index="index" :  Use this directive to access the current item's zero-based index where  index placeholder is a new identifier that the model injects into the current scope. 4. if:true|false={expression} : Use this directive to conditionally render DOM elements in a template. The expression can be a JavaScript identifier (for example, person) or dot notation that accesses a property from an object (person.firstName). The engine doesn’t allow computed express...