This commit is contained in:
luming 2021-06-30 17:14:10 +08:00
parent d75c073dfa
commit b304ee8622

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@ -12,6 +12,7 @@ fun main(args: Array<String>) {
var map: MutableMap<String, String> = mutableMapOf()
map.put("cat", "")
map.put("pig", "")
map.put("pig", "猪1")
println(map)
// 集合大小