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.

Objective-CSwift

- (void)decrementAndGetWithCounterName:(NSString * _Nonnull)counterName responseHandler:^(NSInteger)responseHandler errorHandler:^(Fault * _Nonnull)errorHandler;

func decrementAndGet(counterName: String, responseHandler: ((Int) -> Void)!, errorHandler: ((Fault) -> Void)!)

where:

Argument	Description
counterName	name of the counter to decrement.

Example

Objective-CSwift

[Backendless.shared.counters decrementAndGetWithCounterName:@"MyCounter" responseHandler:^(NSInteger value) {
    NSLog(@"Current value = %li", value);
} errorHandler:^(Fault *fault) {
    NSLog(@"Error: %@", fault.message);
}];

//

id<IAtomic> myCounter = [Backendless.shared.counters ofCounterName:@"MyCounter"];
[myCounter decrementAndGetWithResponseHandler:^(NSInteger value) {
    NSLog(@"Current value = %li", value);
} errorHandler:^(Fault *fault) {
    NSLog(@"Error: %@", fault.message);
}];

Backendless.shared.counters.decrementAndGet(counterName: "MyCounter", responseHandler: { value in
    print("Previous value = \(value)")
}, errorHandler: { fault in
    print("Error: \(fault.message ?? "")")
})

//

let myCounter = Backendless.shared.counters.of(counterName: "MyCounter")
myCounter.decrementAndGet(responseHandler: { value in
    print("Previous value = \(value)")
}, errorHandler: { fault in
    print("Error: \(fault.message ?? "")")
})