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Can PostgreSQL index array columns?
...y. So, while this will help the query in question (see explain plan), this means you can't create unique constraints (easily) on individual array values. That said, if you are using integer arrays, you can use the contrib module "intarray" to index individual array values, which can be much faster i...
“wait_fences: failed to receive reply: 10004003”?
...cation. The key is to understand that asking something to dismiss does not mean it is gone yet, and you shouldn't animate things on top of each other in general. -viewWill/DidDisappear is generally your best way to know for sure when things happen.
– Rob Napier
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Responsively change div size keeping aspect ratio [duplicate]
... content: "";
float: left;
/* essentially the aspect ratio. 100% means the
div will remain 100% as tall as it is wide, or
square in other words. */
padding-bottom: 100%;
}
/* this is a clearfix. you can use whatever
clearfix you usually use, add
overflow:hidden to ...
Daemon Threads Explanation
...is performing a file write operation which is set to non-deamon, Does that mean I have to make it exit explicitly ?
– Ciasto piekarz
Jun 15 '14 at 15:19
8
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npm install from Git in a specific version
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@loretoparisi Sorry. I didn't meant to suggest adding v was necessary. After the #, the fragment should match the tag's full name (or other commitsh) – in your case, #1.0.0.
– Jonathan Lonowski
Apr 19 '16 at 15:51
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Targeting position:sticky elements that are currently in a 'stuck' state
...ties on a :stuck selector should be ignored? (a rule for browser vendors I mean, similar to rules about how left takes precedence over right etc))
– powerbuoy
Apr 18 '16 at 13:01
5...
RSS Feeds in ASP.NET MVC
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What overhead? you mean the fact that you're writing less code to accomplish the same thing in a more readable way?
– Paul
Mar 6 '11 at 19:19
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Which parts of Real World Haskell are now obsolete or considered bad practice?
...lso, lazy IO isn't concerned throughout the whole book, as far as I know.
mean :: [Double] -> Double
mean xs = sum xs / fromIntegral (length xs)
Chapter 24 & Chapter 28 (Concurrent and parallel programming & STM)
While Chapter 24. Concurrent and multicore programming and Chapter 28. S...
Understanding Magento Block and Block Type
I just want to understand the meaning of
5 Answers
5
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SQL: How to get the count of each distinct value in a column?
... "That is, the ANSI standard recognises it as bleeding obvious what you mean. COUNT(1) has been optimised out by RDBMS vendors because of this superstition. Otherwise it would be evaluated as per ANSI" Count(*) vs Count(1)
– Michel Ayres
Dec 3 '14 at 17:42
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