/Swift/Ios swift create new background thread

Ios swift create new background thread

extension DispatchQueue {

    static func background(delay: Double = 0.0, background: (()->Void)? = nil, completion: (() -> Void)? = nil) {
        DispatchQueue.global(qos: .background).async {
            background?()
            if let completion = completion {
                DispatchQueue.main.asyncAfter(deadline: .now() + delay, execute: {
                    completion()
                })
            }
        }
    }
}

// USAGE 

DispatchQueue.background(delay: 3.0, background: {
    // do something in background
}, completion: {
    // when background job finishes, wait 3 seconds and do something in main thread
})

DispatchQueue.background(background: {
    // do something in background
}, completion:{
    // when background job finished, do something in main thread
})

DispatchQueue.background(delay: 3.0, completion:{
    // do something in main thread after 3 seconds
})

Source: stackoverflow.com

Similar codes

0 vote383 views1 answer
Sort array alphabetically swift 4
Swift
0 vote361 views1 answer
Swift iOS15 navigationbar styling not working
Swift
0 vote365 views1 answer
Jsonserialization swift
Swift
-1 vote375 views1 answer
Most frequent element in array swift
Swift
1 vote297 views1 answer
Remove spaces from string swiftui
Swift
0 vote356 views1 answer
Called a function after some time in swift
Swift
2 votes355 views2 answers
Swiftui scrollview hide scrollbar
Swift
0 vote358 views1 answer
Swift isMemberOf
Swift
1 vote434 views2 answers
How to scroll to section in tableview swift
Swift
0 vote351 views1 answer
Nginx all requests to index.html
Swift