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Insert Before

Description

This operation inserts a new value before an existing value in a list.

Method

Backendless.Hive(hiveName).ListStore(keyName).insertBefore(targetValue, value);

where:

Argument                Description
hiveName Name of a hive where the operation is performed. String value.
keyName Key name identifying a list. String value.
targetValue New value to insert into the list. Can be of any data type.
value Value which is used as a position anchor. Can be of any data type.

Return Value

The number of values in the list after the insertion operation.

Example

The example below inserts the "Apple" item right before the "Orange" item in the "fruits" list.

Backendless.Hive("groceryStore").ListStore("fruits").insertBefore("Orange", "Apple");

where:

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

Codeless Reference

list_api_insert_before

where:

Argument                Description
hive name Name of a hive where the operation is performed.
key name Key name identifying a list.
item New item to insert into the list.
before item Value which is used as a position anchor.

Returns he number of values in the list after the insertion operation.

Consider the following List storage:

list_api_example_insert_before_2

The example below inserts the value "Apple" before the "Orange" item in a list identified by the "fruits" key name:
list_api_example_insert_before


The list storage will look as shown below after the Codeless logic runs:
list_api_example_get_values_2