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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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select <column> from <table> group by 1 having count(*) > 1; will give a report on duplicated values.
– Jasen
Aug 26 '16 at 22:57
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Differences between Emacs and Vim
...tor" has to go to emacs in my mind if for no other reason than a far wider selection of major and minor modes to help you as you type.
– Kendall Helmstetter Gelner
Sep 16 '09 at 1:42
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Why should I use an IDE? [closed]
...the code, I can highlight a method and hit F1 to get help, right click and select "go to to definition" to jump straight to where it is defined. I hit one button and the application, with debugger automatically attached is launched for me. And so the list goes on. All the things that a developer doe...
How do I remove diacritics (accents) from a string in .NET?
...gory(c)
where uc != UnicodeCategory.NonSpacingMark
select c;
var cleanStr = new string(chars.ToArray()).Normalize(NormalizationForm.FormC);
return cleanStr;
}
// or, alternatively
public static string RemoveDiacriti
foreach vs someList.ForEach(){}
...INQ extension method that is more specific than ForEach(). See if Where(), Select(), Any(), All(), Max() or one of the many other LINQ methods doesn't already do what you want from the loop.
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How can I push a local Git branch to a remote with a different name easily?
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Rebase is a smart merge. Then push to master again and you’ll see the selected feature branch as master on the new repo.
Optional:
git remote rm upstream
git remote add upstream new-repo-url
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Detecting 'stealth' web-crawlers
... goes the whole argument. who says web crawlers visits sites in sequential selections? another huge assumption.
– KJW
Oct 9 '13 at 0:34
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Repeater, ListView, DataList, DataGrid, GridView … Which to choose?
...plate
lnsertltemTemplate
ItemSeparatorTemplate
ItemTemplate
LayoutTemplate
SelectedltemTemplate
DataList (note the Style pairs)
AlternatingltemStyle
AlternatingltemTemplate
EditltemStyle
EditltemTemplate
FooterStyle
FooterTemplate
HeaderStyle
HeaderTemplate
ItemStyle
ItemTemplate
SelectedltemSty...
Java to Clojure rewrite
... STM transactional behaviour by wrapping any code in a (dosync ...) block.
Select the right overall web framework - Clojure has quite a few already but I'd strongly recommend Ring - see this excellent video "One Ring To Bind Them" plus either Fleet or Enlive or Hiccup depending on your templating p...
How should one go about choosing a default TCP/IP port for a new service?
...veloping an app that will listen on a TCP/IP port, how should one go about selecting a default port? Assume that this app will be installed on many computers, and that avoiding port conflicts is desired.
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