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  • 功能块
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功能块

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.statediagram-cluster.statediagram-cluster-alt .inner{fill:#e0e0e0}#mermaid-svg-1MDQuebXnZeD1t28 .statediagram-cluster .inner{rx:0;ry:0}#mermaid-svg-1MDQuebXnZeD1t28 .statediagram-state rect.basic{rx:5px;ry:5px}#mermaid-svg-1MDQuebXnZeD1t28 .statediagram-state rect.divider{stroke-dasharray:10,10;fill:#efefef}#mermaid-svg-1MDQuebXnZeD1t28 .note-edge{stroke-dasharray:5}#mermaid-svg-1MDQuebXnZeD1t28 .statediagram-note rect{fill:#fff5ad;stroke:#aa3;stroke-width:1px;rx:0;ry:0}:root{--mermaid-font-family: '"trebuchet ms", verdana, arial';--mermaid-font-family: "Comic Sans MS", "Comic Sans", cursive}#mermaid-svg-1MDQuebXnZeD1t28 .error-icon{fill:#522}#mermaid-svg-1MDQuebXnZeD1t28 .error-text{fill:#522;stroke:#522}#mermaid-svg-1MDQuebXnZeD1t28 .edge-thickness-normal{stroke-width:2px}#mermaid-svg-1MDQuebXnZeD1t28 .edge-thickness-thick{stroke-width:3.5px}#mermaid-svg-1MDQuebXnZeD1t28 .edge-pattern-solid{stroke-dasharray:0}#mermaid-svg-1MDQuebXnZeD1t28 .edge-pattern-dashed{stroke-dasharray:3}#mermaid-svg-1MDQuebXnZeD1t28 .edge-pattern-dotted{stroke-dasharray:2}#mermaid-svg-1MDQuebXnZeD1t28 .marker{fill:#333}#mermaid-svg-1MDQuebXnZeD1t28 .marker.cross{stroke:#333}:root { --mermaid-font-family: "trebuchet ms", verdana, arial;} #mermaid-svg-1MDQuebXnZeD1t28 {color: rgba(0, 0, 0, 0.75);font: ;}

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比拟场景

人类卡卡、贝贝等宇航员终于等于登上了火星了。在经过不懈的探索之后，竟然在火星某处地表下发现了一座被遗弃的古城，现在他们收到了一个任务，探索起始点南站到目标地点北站之间可能有价值的地点：

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未知途径
南站
北站

从南站到北站的探索过程中，宇航员和地球的交流的指令格式是这样的：

  • 从南站向前直走1000米，到达前面塌方地标1处。
  • 从塌方地标1处左行3000米，到达坑洞1号。
  • …
  • 向前直走500米，到达目标地点。

由于环境的极度恶劣，宇航员只携带了简单的设备，可以记录发现的路径以及通过这个设备和地球通信。这个设备的叫做 git，它有个图形界面操作软件，叫做 sourceTree，含有来源追溯之意。

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git
git
宇航员
地球

首先，宇航员需要从地球获取任务目标：

为了保证宇航员的安全和任务的顺序完成，只能操作指定的行动。

行动

丢弃

行动内容：宇航员将探索的路线上发现的没有探索价值的地点丢弃。
使用场景：丢弃下面发现的垃圾厂

提交

行动内容：宇航员确认探索的路线上发现的一系列有探索价值的地点。
使用场景 ：贝贝发现 塌方地表2，并认可这个行动路线价值，因此将该路线 提交 到本地。此时，并没有推送给地球，地球并不知道新发现的地点。

推送

行动内容： 宇航员将探索发现的路径推送给地球。
使用场景：在贝贝到达 塌方地表2 的同时，卡卡到达了 塌方地表2 ，并且将提交的路线推送给地球。

获取

行动内容：从地球获取最新发现的所有行动路线。
使用场景：贝贝在推送自己的发现之前，先从地球 获取 了最新行动路线。

拉取

行动内容：执行获取操作，如果从地球获取的所有行动路线中，没有关于宇航员正在执行的行动路线的行动指令，结束行动；如果有关于当前行动路线的指令，那么那么宇航员需要执行最新行动。
使用场景：贝贝和卡卡当前都在 master 主行动路线上，而且贝贝将要推送给地球的内容和卡卡已推送的内容发生了冲突。

贝贝本地提交：

卡卡推送给地球的内容：

这个时候，贝贝如果执行推送，会被拒绝。贝贝这时应该执行 拉取操作。这时 sourceTree会提醒你发生了冲突了：

这个时候，你需要重新修改文件描述：

分支

行动内容 ：从南站到北站新开辟的行动路线。
主要场景 ：为了避免不同宇航员之间的行动路线冲突，最大化的利用资源，贝贝和卡卡都新开辟了一条新的路线，并且把 master命名为主路线。在新开辟的路线上，贝贝和卡卡分别发现了塌方地表3 和 塌方地表4 ，经过价值评估之后，贝贝和卡卡分别将新发现的地点推送给了地球。

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主路线
贝贝路线1
卡卡路线1

贮藏

行动内容 ：保存宇航员当前的发现待确认探索价值的地点。
主要场景 ：贝贝在发现了 塌方地表5 和 塌方地表6 之后，联想到卡卡发现的 塌方地表4。直觉告诉他，塌方地表4 对于了解 塌方地表5 和 塌方地表6 很有必要，因此需要先搁置 塌方地表5 和 塌方地表6 的确认工作，先探索 塌方地表4。

合并

行动内容 ：将行动路线A合并到行动路线B，即将行动路线A的探索工作在行动路线B上重新操作一次。
主要场景 ：贝贝将卡卡推送的 卡卡路线1 合并到了 贝贝路线1 分支。注意，先要确认下当前所在的分支是 贝贝路线1， 在进行下面的合并操作。

在进行完合并操作（可能会有冲突，有冲突就本地进行冲突解决）后，将贮藏的东西重新应用：


经过一番探索，确认了 塌方地表5 和 塌方地表6 的价值，进行提交。

标签

行动内容 ：给行动路线起一个更有意义的名字。
主要场景 ： 塌方地表5 和 塌方地表6 的发现为人类带来了很大的经济利益，为了纪念这个特殊的行动，标记为 “贝贝一号”。

回滚

行动内容 ：撤销 提交 的行动路线。
主要场景 ：在贝贝进行 塌方地表5 和 塌方地表6 的时候，卡卡又对 塌方地表4 进行了又一番考察，认为 塌方地表4 没有价值，因此 回滚 上一次的 提交。

塌方地表4 文件已经被删除，推送给地球：

错误合并

主要场景 ：为了培养下一代人才，这一次新手木木也被送上了火星，登陆点是贝贝路线，接替贝贝的工作。

由于不熟悉操作流程，木木都没有和贝贝确认卡卡的最新提交是否可以合并到当前的工作，直接进行了合并操作：
塌方地表4 被删除了。木木刚准备着把新的工作推送给地球，还好贝贝刚好发现，及时纠正了木木的工作。

这种错误一般也出现在把 master 分支往自己的开发分支上合并。不要把 master 的分支往开分分支上合并。

从任意过去开始

主要场景 ：木木为了提醒自己，并没有 回滚 自己错误， 而是给当前的工作打了个 标签 ：

然后， 从 贝贝发现塌方地表3 的地方重新 分支 ，重新开始贝贝的工作：

下面是木木重新开始的地方：

遴选

行动内容 ：只选取有价值的内容到当前的工作路线中。
主要场景 ：木木经过不懈的努力，终于连续有了两次重大的发现 木木发现塌方地表7和塌方地表8 和 木木发现塌方地表9和塌方地表10 。

贝贝发现， 木木发现塌方地表7和塌方地表8 的工作内容对自己当前的工作内容很有价值，而 木木发现塌方地表9和塌方地表10 暂时对自己并没有任何需要：

木木发现塌方地表7和塌方地表8 合并到贝贝的分支上了：

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