比如你改了 hub上一个 readme 然后提交 那么,这个 Commit directly to the master branch. 什么意思呢? 直接给 主分支提交更改。 首先 关于branch 的解答见下面谷歌解释: Why do we use branching in Git? A Git branch is essentially an independent
查看Mat文档时里面是这么描述Shallow Heap的:Shallowheap is the memory consumed by one object. An object needs 32 or 64 bits(depending on the OS architecture) per reference, 4 bytes per Integer, 8 bytesper Long, etc.