Android EditText data binding with RxKotlin

Binding.kt

infix fun Variable<String>.binding(editText: EditText) {
    var block = false

    this.observable.subscribe {
        if (block == false) {
            block = true
            editText.setText(it)
            block = false
        }
    }

    editText.rx.subscribe {
        if (block == false) {
            block = true
            this.value = it
            block = false
        }
    }
}

infix fun EditText.binding(variable: Variable<String>) {
    variable binding this
}