Kotlin对象比较注意点示例详解

private val stateFlow = MutableStateFlow(kotlin.Pair<String, ArrayList<String>>("abc", ArrayList()))

GlobalScope.launch {
    stateFlow.collect {
        // do something
    }
}

GlobalScope.launch {
    stateFlow.value.second.add("test")
    stateFlow.emit(stateFlow.value)
}

override suspend fun emit(value: T) {
    this.value = value
}

public override var value: T
    get() = NULL.unbox(_state.value)
    set(value) { updateState(null, value ?: NULL) }

private fun updateState(expectedState: Any?, newState: Any): Boolean {
    var curSequence = 0
    var curSlots: Array<StateFlowSlot?>? = this.slots // benign race, we will not use it
    synchronized(this) {
        val oldState = _state.value
        if (expectedState != null && oldState != expectedState) return false // CAS support
        if (oldState == newState) return true // Don't do anything if value is not changing, but CAS -> true
        _state.value = newState
        curSequence = sequence
        ... 省略部分代码
    }
}

GlobalScope.launch {
    stateFlow.value.apply {
        stateFlow.emit(kotlin.Pair(first, second))
    }
}

public final class Pair {
    public int hashCode() {
        Object var10000 = this.first;
        int var1 = (var10000 != null ? var10000.hashCode() : 0) * 31;
        Object var10001 = this.second;
        return var1   (var10001 != null ? var10001.hashCode() : 0);
    }

    public boolean equals(@Nullable Object var1) {
        if (this != var1) {
            if (var1 instanceof Te.Pair) {
                Te.Pair var2 = (Te.Pair) var1;
                if (Intrinsics.areEqual(this.first, var2.first) && Intrinsics.areEqual(this.second, var2.second)) {
                    return true;
                }
            }
            return false;
        } else {
            return true;
        }
    }
}

public static boolean areEqual(Object first, Object second) {
    return first == null ? second == null : first.equals(second);
}