Delete First

Description

This operation deletes values from the beginning of the list and returns them in the response.

Method

Objective-CSwift

[[[Backendless.shared hive:(NSString *)hiveName] listStore:(NSString *)keyName] deleteFirstWithCount:(NSInteger)count responseHandler:^(NSArray *)responseHandler errorHandler:^(Fault *)errorHandler];

Backendless.shared.hive(hiveName: String).listStore(keyName: String).deleteFirst(count: Int, responseHandler: (([Any]) -> Void)!, errorHandler: ((Fault) -> Void)!)

where:

Argument	Description
hiveName	Name of a hive where the operation is performed. String value.
keyName	Key name identifying a list. String value.
count	Optional parameter. Identifies the number of items to delete from the list. Defaults to 1.

Return Value

An array containing deleted value(s).

Example

The example below deletes the first 2 values from the "fruits" list.

Objective-CSwift

[[[Backendless.shared hive:@"groceryStore"] listStore:@"fruits"] deleteFirstWithCount:2 responseHandler:^(NSArray *response) {
    // handle response
} errorHandler:^(Fault *fault) {
    // handle error
}];

Backendless.shared.hive("groceryStore").listStore("fruits").deleteFirst(count: 2, responseHandler: { response in
    // handle response
}, errorHandler: { fault in
    // handle error
})

where:

Argument	Description
"groceryStore"	Name of a hive where the operation is performed.
"fruits"	Key name identifying a list.

Codeless Reference

where:

Argument	Description
hive name	Name of a hive where the operation is performed.
key name	Key name identifying a list.
position: first	Instructs Hive to delete the first value from the beginning of the list.
count	Specifies the number of items to delete.

Returns a list of the deleted values.

Consider the following List storage:

The example below deletes the first value from the beginning of the "fruits" list:

The list will look as shown below after the Codeless logic runs: