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You need to set eclipse's default installed "jre" to a jdk. Eclipse Window Menu => Preferences => enter search string "jre" in left navigation pane => 阅读全文
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The command port and cluster bus port offset is fixed and is always 10000. The LPUSH command inserts a new element on the head, while RPUSH inserts a 阅读全文
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Information:Using javac 1.8.0_60 to compile java sourcesInformation:java: javacTask: 源发行版 1.6 需要目标发行版 1.6Information:java: Errors occurred while compi 阅读全文
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Mongo Run As Windows Service Command:D:\Dev\Tools\mongodb-2.4.9\bin\mongod.exe --config D:\Dev\Tools\mongodb-2.4.9\mongod.cfg --install 阅读全文
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Style Guide for Python Code:https://www.python.org/dev/peps/pep-0008/在Python中，类似于 C ，任何非零整数都是 true；0 是 false 条件也可以是字符串或列表，实际上可以是任何序列； 阅读全文
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database, oracle 阅读全文
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Using the wrong join condition in aFROMclause causes unpredictable results. If theFROMclause specifies a one-to-many join and theSETclause references ... 阅读全文
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:!% 阅读全文
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Create a new repository on the command linetouch README.mdgit initgit add README.mdgit commit -m "first commit"git remote add origin https://github.co... 阅读全文
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:g/^$/d:g will execute a command on lines which match a regex. The regex is 'blank line' and the command is :d (delete)g 会执行一个正则表达式的命令，能删除文本里面的空行。 阅读全文