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| var gajah: Gajah? = nil | |
| // Membuat custom queue | |
| let barrierQueue = DispatchQueue(label: "concurrentBarrierQueue", attribute : .concurrent) | |
| // Mengisi / Writing | |
| barrierQueue.async(flags: .barrier) { | |
| gajah = Gajah() | |
| } | |
| // Membaca / Reading | |
| barrierQueue.sync { | |
| print(gajah.belalai.panjang) | |
| } | |
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