Waiting until two async blocks are executed before starting another block

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Waiting until two async blocks are executed before starting another block

Mroctophthalmousjnmq

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#11

07-21-2023, 06:22 PM

Accepted answer in swift:

let group = DispatchGroup()

group.async(group: DispatchQueue.global(qos: .default), execute: {
// block1
print("Block1")
Thread.sleep(forTimeInterval: 5.0)
print("Block1 End")
})

group.async(group: DispatchQueue.global(qos: .default), execute: {
// block2
print("Block2")
Thread.sleep(forTimeInterval: 8.0)
print("Block2 End")
})

dispatch_group_notify(group, DispatchQueue.global(qos: .default), {
// block3
print("Block3")
})

// only for non-ARC projects, handled automatically in ARC-enabled projects.
dispatch_release(group)

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