Cloning

Clone	DeepClone
If a list is cloned, it duplicates it and has reference.	If a list is DeepCloned, it duplicates and doesn’t have any reference.
Primitive data types are supported.	Primitive data types are not supported.
Parameters: Not applicable	Parameters: Boolean opt_preserve_id – Whether cloned sObjects records ids are maintained. Boolean opt_preserve_readonly_timestamps– Whether cloned sObjects records read only system fields like createdDate, LastModifiedDtate, etc are   maintained. Boolean opt_preserve_autonumbe– Whether cloned sObjects records auto number fields are maintained.
Sample Code: Account Account1= new Account(Name='Test1'); Account Account2= new Account(Name='Test2'); List<Account> AccountList = new List<Account>{Account1, Account2}; List<Account> listDuplicate = new List<Account>(); listDuplicate = AccountList.clone(); AccountList.get(0).Name = 'Testing1'; system.debug(AccountList.get(0).Name + ',' + listDuplicate.get(0).Name); Now AccountList.get(0).Name and listDuplicate get(0).Name will be ‘Testing1’. listDuplicate.get(0).Name = 'Testing2'; system.debug(AccountList.get(0).Name + ',' + listDuplicate.get(0).Name); Now AccountList.get(0).Name and listDuplicate get(0).Name will be ‘Testing2’.	Sample Code: Account Account1= new Account(Name='Test1'); Account Account2= new Account(Name='Test2'); List<Account> AccountList = new List<Account>{Account1, Account2}; List<Account> listDuplicate = new List<Account>(); listDuplicate = AccountList.deepClone(); AccountList.get(0).Name = 'Testing1'; system.debug(AccountList.get(0).Name + ',' + listDuplicate.get(0).Name); Now AccountList.get(0).Name will be ‘Testing1’ and listDuplicate get(0).Name will be ‘Test1’. listDuplicate.get(0).Name = 'Testing2'; system.debug(AccountList.get(0).Name + ',' + listDuplicate.get(0).Name); Now AccountList.get(0).Name will be ‘Testing1’ and listDuplicate get(0).Name will be ‘Testing2’.

Synchronous and Asynchronous Calls with the AJAX Toolkit

AJAX Toolkit allows to issue synchronous or asynchronous calls. Asynchronous calls allow the client side process to continue, waiting for a call back from the server. To issue an asynchronous call, you must include an additional parameter with the API call, referred to as a callback function. Once the result is ready, the server invokes the callback method with the result.

Synchronous syntax:

sforce.connection.method("arg1","arg2", ...);

e.g:

sforce.connection.login("MyName@MyOrg.com","myPassword1");

Asynchronous syntax:

method("arg1","arg2", ..., callback_method);

For example:

var callback = {onSuccess: handleSuccess, onFailure: handleFailure};
function handleSuccess(result) {}
function handleFailure(error) {}
sforce.connection.query("Select name from Account", callback);

Field Dependency

A dependent relationship that causes the values in a picklist or multi-select picklist to be dynamically filtered based on the value selected by the user in another field.

1.  • The field that drives filtering is called the "controlling field." Standard and custom checkboxes and picklists (Multi-select picklist not allowed) with at least one and less than 300 values can be controlling fields. 
2.  • The field that has its values filtered is called the "dependent field." Custom picklists and multi-select picklists can be dependent fields. 

 

Basic HTTP access Authentication :

HTTP Basic Auth (or Basic access authentication) is a widely used protocol for simple username/password authentication.

Warning! Please note that when using Basic auth, your password is being sent to the server, and therefore this should be considered safe only over HTTPS.

Client side:

When the user agent wants to send the server authentication credentials it may use the Authorization field.

The Authorization field is constructed as follows:

1. The username and password are combined with a single colon.
2. The resulting string is encoded using the RFC2045-MIME variant of Base64, except not limited to 76 char/line.
3. The authorization method and a space i.e. "Basic " is then put before the encoded string.

For example, if the user agent uses Aladdin as the username and OpenSesame as the password then the field is formed as follows:

 Aladdin:OpenSesame | base64  

.. yields a string 'QWxhZGRpbjpPcGVuU2VzYW1l' that is used like so:

Authorization: Basic QWxhZGRpbjpPcGVuU2VzYW1l

-----------------------------------------------------------------

Server side:

When the server wants the user agent to authenticate itself towards the server, it must respond appropriately to unauthenticated requests.

Unauthenticated requests should return a response whose header contains a HTTP 401 Unauthorized status and a WWW-Authenticate field.^[5]

The WWW-Authenticate field for basic authentication (used most often) is constructed as following:

WWW-Authenticate: Basic realm="User Visible Realm"

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