Kotlin编程语言有哪些应用场景?
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本文共计73个文字,预计阅读时间需要1分钟。
javavar email=null;email ?? println(email is empty);email?.let { println(email not empty) var current=it println(current var $current)} ?: println(not i fuck i am null)
var email=null;
email?: println("email is empty");
email?.let{
println("emali not empty");
}
var current= email?.let { "nihao" }?:"not i fuck i am null";
println("current var ${current}");
本文共计73个文字,预计阅读时间需要1分钟。
javavar email=null;email ?? println(email is empty);email?.let { println(email not empty) var current=it println(current var $current)} ?: println(not i fuck i am null)
var email=null;
email?: println("email is empty");
email?.let{
println("emali not empty");
}
var current= email?.let { "nihao" }?:"not i fuck i am null";
println("current var ${current}");

