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Algorithm to return all combinations of k elements from n

... takes an array of letters as an argument and a number of those letters to select. 71 Answers ...
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Android Studio: how to attach Android SDK sources?

...uild.gradle with the desired API level. In the Project window on the left, select the External Libraries drop-down. Right click the menu item and select Open Library Settings. Click the Sourcepath tab and use the + icon at the bottom left to link to the desired SDK sources (should be in something/s...
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Why isn't SQL ANSI-92 standard better adopted over ANSI-89?

...shion. The "best" way to break is by compilation error. For example if you SELECT * somewhere, the addition of a column could fail to compile. The next best way to fail would be a run time error. It's worse because your users may see it, but it still gives you a nice warning that you've broken somet...
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Surrogate vs. natural/business keys [closed]

...ot more tables into your query than should really be necessary. Compare: select sum(t.hours) from timesheets t where t.dept_code = 'HR' and t.status = 'VALID' and t.project_code = 'MYPROJECT' and t.task = 'BUILD'; against: select sum(t.hours) from timesheets t join departents d on d.dept_i...
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How to convert linq results to HashSet or HashedSet

...f T explicitly: var query = from i in Enumerable.Range(0, 10) select new { i, j = i + 1 }; var resultSet = query.ToHashSet(); You can't do that with an explicit call to the HashSet<T> constructor. We're relying on type inference for generic methods to do it for us. Now you coul...
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WCF - How to Increase Message Size Quota

...the issue: Right-Click on the Config File node at the bottom of the tree Select Edit with SvcConfigEditor A list of editable settings will appear, including MaxBufferSize. Note: Auto-generated proxy clients also set MaxBufferSize to 65536 by default. ...
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Create table with jQuery - append

... You need to append the tr inside the table so I updated your selector inside your loop and removed the closing table because it is not necessary. $('#here_table').append( '<table />' ); for(i=0;i<3;i++){ $('#here_table table').append( '<tr><td>' + 'result' ...
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HTTPS setup in Amazon EC2

... of your project On Load Balancer Protocol add Http and Https Next > Select exiting security group Choose the security group that you have create in the previous step Next > Choose certificate from ACM Select the certificate of the step 1 Next > on Health check i've used the ping p...
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Change EOL on multiple files in one go

...after googling for 1 hour is this: install PyCham trial mode, open and select your Project Folder/Folders and follow the screenshot share | improve this answer | foll...
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Is it possible to dynamically compile and execute C# code fragments?

...,100) where i % 2 == 0 select i; } }"); results.Errors.Cast<CompilerError>().ToList().ForEach(error => Console.WriteLine(error.ErrorText)); } } The class of primary importance here is the CSharpCodeP...