大约有 48,000 项符合查询结果(耗时:0.0328秒) [XML]

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Select Last Row in the Table

I would like to retrieve the last file inserted into my table. I know that the method first() exists and provides you with the first file in the table but I don't know how to get the last insert. ...
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C#/Linq: Apply a mapping function to each element in an IEnumerable?

... You can just use the Select() extension method: IEnumerable<int> integers = new List<int>() { 1, 2, 3, 4, 5 }; IEnumerable<string> strings = integers.Select(i => i.ToString()); Or in LINQ syntax: IEnumerable<int> in...
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How to empty a redis database?

... $ redis-cli then select database. I am selecting 0 > select 0 and delete all keys of db 0 > FLUSHDB – sagar junnarkar May 5 '15 at 17:41 ...
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Using Linq to group a list of objects into a new grouped list of list of objects

... var groupedCustomerList = userList .GroupBy(u => u.GroupID) .Select(grp => grp.ToList()) .ToList(); share | improve this answer | follow ...
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Android Studio says “cannot resolve symbol” but project compiles

...y only thought so far: right click the jar file in file tree within AS and select "Add as library..." EDIT: You can do "File" -> "Invalidate Caches...", and select "Invalidate and Restart" option to fix this. EDIT 2: This fix should work for all similar incidents and is not a twitter4j specific...
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MySQL string replace

... Yes, MySQL has a REPLACE() function: mysql> SELECT REPLACE('www.mysql.com', 'w', 'Ww'); -> 'WwWwWw.mysql.com' http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace Note that it's easier if you make that an alias when using SELECT SEL...
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How do you check if a certain index exists in a table?

... You can do it using a straight forward select like this: SELECT * FROM sys.indexes WHERE name='YourIndexName' AND object_id = OBJECT_ID('Schema.YourTableName') share | ...
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Permission denied (publickey) when SSH Access to Amazon EC2 instance [closed]

...these steps: Access to AWS Management Console Open Elastic Beanstalk Tab Select your application from All Applications Tab From left side menù select Configuration Click on the Instances Gear In Server Form check the EC2 Key Pair input and select your new Key Pair. You may have to refresh the lis...
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How to filter logcat in Android Studio?

...ter on. Using this method you also save the filters and can re-use them by selecting them in the dropdown. Screenshot: share | improve this answer | follow |...
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Get full path of the files in PowerShell

... Add | select FullName to the end of your line above. If you need to actually do something with that afterwards, you might have to pipe it into a foreach loop, like so: get-childitem "C:\windows\System32" -recurse | where {$_.exte...