/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

-1 vote319 views1 answer
Most frequent element in array swift
Swift
0 vote315 views1 answer
Hide bottom tab bar swift
Swift
6 votes318 views2 answers
For each swiftui
Swift
1 vote262 views2 answers
Swift pop view controller
Swift
0 vote329 views1 answer
Xcode how to know which textfield is selected
Swift
0 vote288 views1 answer
TextField.characther range
Swift
0 vote338 views1 answer
Ios swift local storage with icloud
Swift
1 vote320 views1 answer
Swift get day from available string
Swift
1 vote296 views1 answer
Swift get a rectangle centered
Swift
0 vote347 views1 answer
Type String and int swift addition
Swift