大约有 4,500 项符合查询结果（耗时：0.0200秒） [XML]
Get top 1 row of each group
I have a table which I want to get the latest entry for each group. Here's the table:
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How to get object size in memory? [duplicate]
...need to know how much bytes my object consumes in memory (in C#). for example how much my Hashtable , or SortedList , or List<String> .
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Why does InetAddress.isReachable return false, when I can ping the IP address?
Why does isReachable return false ? I can ping the IP.
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How do you view ALL text from an ntext or nvarchar(max) in SSMS?
How do you view ALL text from an NTEXT or NVARCHAR(max) in SQL Server Management Studio? By default, it only seems to return the first few hundred characters (255?) but sometimes I just want a quick way of viewing the whole field, without having to write a program to do it. Even SSMS 2012 still has...
Test whether a glob has any matches in bash
If I want to check for the existence of a single file, I can test for it using test -e filename or [ -e filename ] .
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How to set default values in Rails?
I'm trying to find the best way to set default values for objects in Rails.
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How to add Git's branch name to the commit message?
I need some help with a Bash script that will automatically add the git's branch name as a hash in commit messages.
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What is the Swift equivalent of respondsToSelector?
I've googled but not been able to find out what the swift equivalent to respondsToSelector: is.
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Can I install/update WordPress plugins without providing FTP access?
I am using WordPress on my live server which only uses SFTP using an SSH key.
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How to run a shell script at startup
On an Amazon S3 Linux instance, I have two scripts called start_my_app and stop_my_app which start and stop forever (which in turn runs my Node.js application). I use these scripts to manually start and stop my Node.js application. So far so good.
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