mutableStateOf() の 3 つの使い方

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1. val mutableState: MutableState<String> = mutableStateOf("")  
2.   
3. val v = mutableState.value  
4. mutableState.value = "1"  

val mutableState: MutableState<String> = mutableStateOf("") val v = mutableState.value mutableState.value = "1"

destructuring declaration

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1. val (value: String, setValue: (String) -> Unit) = mutableStateOf("")  
2.   
3. val v = value  
4. setValue("1")  

val (value: String, setValue: (String) -> Unit) = mutableStateOf("") val v = value setValue("1")

delegate

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1. var value: String by mutableStateOf("")  
2.   
3. val v = value  
4. value = "1"  

var value: String by mutableStateOf("") val v = value value = "1"