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Decrement by 1, return current

Atomically decrements by one the current value and returns the updated (current) value of the counter. Multiple concurrent client requests are guaranteed to return unique updated value.

Future<int> Backendless.counters.decrementAndGet(String counterName);

IAtomic counter = Backendless.counters.of(String counterName);
Future<int> counter.decrementAndGet();

where:

Argument                Description
counterName name of the counter to decrement.

Example

Function callback = (counterValue) => print("current counter value is - $counterValue");

Backendless.counters.decrementAndGet("my counter").then(callback);

IAtomic myCounter = Backendless.counters.of("my counter");
myCounter.decrementAndGet().then(callback);

Codeless Reference

codeless_atomic_counters_decrement_1_return_current

where:

Argument                Description
counter name Name of the counter whose value must be decremented.
return current value When this box is checked, the operation returns the current value of the counter.

Returns the current value of the counter.

Consider the following counter:

codeless_atomic_counters_decrement_1_return_previous_2

The example below decrements the value of the "CarsParkingLot" by 1. This operation returns 9, since the return current value box is checked.

codeless_atomic_counters_decrement_1_return_current_2

The result of this operation will look as shown below after the Codeless logic runs:

codeless_atomic_counters_decrement_1_return_previous_4