elvis演算子のあとにブロックを書いてごにょごにょ初期化したいときの書き方。
runを使うのがポイント。
val hoge:Int = fuga ?: run {
val piyo = 1
piyo = 2
piyo // fuga が null なら hoge に piyoが代入される
}
More than 5 years have passed since last update.
Register as a new user and use Qiita more conveniently
- You get articles that match your needs
- You can efficiently read back useful information
- You can use dark theme