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SQL RANK() versus ROW_NUMBER()
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Ah, I think this is what I was missing -> Row_number is the distinct rank of rows, without any gap in the ranking.
– dotNET Hobbiest
Oct 12 '11 at 22:37
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Updating MySQL primary key
...unt(*) n from user_interactions u
group by user_2, user_1, type
having n > 1;
delete u from user_interactions u, fixit
where fixit.user_2 = u.user_2
and fixit.user_1 = u.user_1
and fixit.type = u.type
and fixit.timestamp != u.timestamp;
alter table user_interactions add primary key (...
What to use as an initial version? [closed]
...l/marketing impact of the version number (version number increased often => more $$$, people don't want to buy a 0.99 beta version, etc) must be taken into account. "Logic" version numbers can help when working in a huge team.
And I like the linux way of having odd numbers for the unstable versi...
Google Maps V3: How to disable “street view”?
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streetViewControl: false -> It removes only street view and it works but for removing the zoom controls (plus-minus buttons) too, you answer not work by replacing streetViewControl: false, with disableDefaultUI: true,
–...
Favorite (Clever) Defensive Programming Best Practices [closed]
...e AccountType.MoneyMarket:
// do some other thing
default:
--> Debug.Fail("Invalid account type.");
}
At some point I'll add another account type to this enum. And when I do, I'll forget to fix this switch statement. So the Debug.Fail crashes horribly (in Debug mode) to draw ...
How do I turn a String into a InputStreamReader in java?
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Converting String->byte[] or vice versa without mentioning a character encoding is almost always a bug.
– Joachim Sauer
Aug 11 '09 at 15:31
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How do you get git to always pull from a specific branch?
...a 0)
To git@github.com:bigben87/webbit.git
1bf578c..268fb60 gh-pages -> gh-pages
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What is the right way to check for a null string in Objective-C?
...ull.
So a good test might be:
if (title == (id)[NSNull null] || title.length == 0 ) title = @"Something";
Note how you can use the fact that even if title is nil, title.length will return 0/nil/false, ie 0 in this case, so you do not have to special case it. This is something that people who ar...
How do I rename an open file in Emacs?
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C-x C-w or use the menu File > Save as...
– Yoo
Oct 14 '10 at 13:21
No...
Avoiding an ambiguous match exception
...n. In this case, you could use returnType.GetMethods().SingleOrDefault(m => m.Name == "op_Explicit" && m.ReturnType == typeof(float)) for example.
– Guillaume
Sep 23 '18 at 23:18
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