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lihongzheshuai / lihongzheshuai.github.io

onecoder's blog.
https://onecoder-blog.vercel.app
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未初始化的String相 "+" 为什么会打印出“nullnull" #206

Open lihongzheshuai opened 7 years ago

lihongzheshuai commented 7 years ago

http://www.coderli.com/null-string/