2020年10月28日
[Kotlin] When
摘要： fun getColorType() : String { val color = getUpperFavoriteColor() return when (color) { "" -> "empty" "RED", "GREEN", "BLUE" -> "rgb" else -> "other" 阅读全文
posted @ 2020-10-28 20:58 Zhentiw 阅读(128) 评论(0) 推荐(0)
[Kotlin] The Let function
摘要： Let function is another way to solve null problem in kotlin. When you have such problem: var favoriteColor: String? = null...... return if f(avoriteCo 阅读全文
posted @ 2020-10-28 20:54 Zhentiw 阅读(63) 评论(0) 推荐(0)
[Kotlin] The Elvis operator
摘要： In Javascript, we have: return age null ? -1 : age In kotlin, we can do the same thing with a better / simpler syntax: val safeAge: Int get() = age ?: 阅读全文
posted @ 2020-10-28 20:37 Zhentiw 阅读(123) 评论(0) 推荐(0)