大约有 47,000 项符合查询结果（耗时：0.0978秒） [XML]
A list of indices in MongoDB?
Is there a way to see a list of indices on a collection in mongodb in shell? i read through http://www.mongodb.org/display/DOCS/Indexes but i dont see anything
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What does rake db:test:prepare actually do?
I am following the rails tutorial videos and I can't figure out what the db:test:prepare command actually does. Can som>me m>one provide an explanation?
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proper hibernate annotation for byte[]
...cimal,
java.util.Date,
java.util.Calendar, java.sql.Date,
java.sql.Tim>me m>, java.sql.Tim>me m>stamp,
byte[], Byte[], char[], Character[], enums, and any other
type that implem>me m>nts Serializable.
As described in Section 2.8, the use
of the Basic annotation is optional
for persistent fields and...
Regex how to match an optional character
I have a regex that I thought was working correctly until now. I need to match on an optional character. It may be there or it may not.
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Enum>me m>rable.Empty() equivalent for IQueryable
When a m>me m>thod returns IEnum>me m>rable<T> and I do not have anything to return, we can use Enum>me m>rable.Empty<T>() .
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How do you grep a file and get the next 5 lines
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You want:
grep -A 5 '19:55' file
From man grep:
Context Line Control
-A NUM, --after-context=NUM
Print NUM lines of trailing context after matching lines.
Places a line containing a gup separator (described under --group-separator)
between contiguous grou...
Ruby Array find_first object?
Am I missing som>me m>thing in the Array docum>me m>ntation? I have an array which contains up to one object satisfying a certain criterion. I'd like to efficiently find that object. The best idea I have from the docs is this:
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Apply .gitignore on an existing repository already tracking large number of files
I have an existing Visual Studio project in my repository. I recently added a .gitignore file under my project and I assum>me m> that tells Git to ignore the files listed in the file.
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How to go to a specific file in Chrom>me m> Developer Tools?
I am developing a web application with a heavy front-end approach. By using Dojo and the AMD-way, I currently have testing screens which may easily load over a hundred different javascript files.
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How to uncompress a tar.gz in another directory
...n case you are using the Gnu version of tar. The directory should exist:
mkdir foo
tar -xzf bar.tar.gz -C foo
If you are not using a tar capable of extracting to a specific directory, you can simply cd into your target directory prior to calling tar; then you will have to give a complete path to...