[背景]
使用之中发现一些eclipse使用的小技巧，记录下来供以后查阅
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Eclipse保存preferences，并导入到其他workspaces
The Export wizard can be used to export preferences from the Workbench to the local file system.
To export a preference file:
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Select File > Export .
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In the Export wizard select General > Preferences and click Next .
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Select one of the following:
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Export all to add all of the preferences to the file.
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Choose specific preferences to export to add only specified preferences to the file.
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Click Browse... and locate the preferences file on the local file system.
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Click Finish
To import a preference file:
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Select File > Import .
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In the Import wizard select General > Preferences and click Next .
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Click Browse... and locate the Preferences file on the local file system.
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Select one of the following:
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Import all to accept all of the preferences defined in the file.
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Choose specific preferences to import to select only specified preferences defined in the file.
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Click Finish .
参考：http://eric-gcm.iteye.com/blog/1491184
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在Eclipse里使用不同的workspaces来对不同类型的项目进行管理，例如学习区、主干项目、分支项目、发布项目等，这样有利于对项目进行管理避免出现修改错误