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Length

Description

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

Method

[[[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.

[[[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

list_api_get_key_items_count

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:

list_api_example_get_values_2

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

list_api_example_get_key_items_count


The output will look as shown below after the Codeless logic runs.
sorted_set_api_example_get_key_values_count._2