Length

Description

This operation counts and returns the number of values in the list.

Method

Objective-CSwift

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

Backendless.shared.hive(hiveName: String).listStore(keyName: String).length(responseHandler: ((Int) -> 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.

The total number of values stored in the specified list.

Example

The example below returns the total number of items stored in the "fruits" list.

Objective-CSwift

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

Backendless.shared.hive("groceryStore").listStore("fruits").length(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.

Returns the total number of values in the list.

Consider the following List storage:

The example below counts the number of items in the "fruits" list:

The output will look as shown below after the Codeless logic runs.