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What is the difference between :first-child and :first-of-type?

I can't tell the difference between element:first-child and element:first-of-type 3 Answers ...
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Doctrine and composite unique keys

...umn names, not field names. So you have to convert camelCase to snake_case and append _id for associations, because that's how Doctrine generates column names. – gronostaj Mar 6 '18 at 13:35 ...
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Why is Java's AbstractList's removeRange() method protected?

Does anyone have any idea, why removeRange method in AbstractList (and also in ArrayList ) is protected ? It looks like a quite well-defined and useful operation, but still, to use it, we're forced to subclass the List implementation. ...
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What are JavaScript's builtin strings?

... First of all, I would like to thank Jason and all the contributors for playing with that funny snippet. I have written that piece of code just for fun in order to send it to my wife on February 14 :) Having only Chrome installed on the laptop I had no options to chec...
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Best practice for nested fragments in Android 4.0, 4.1 (

I'm writing an app for 4.0 and 4.1 tablets, for which I do not want to use the support libraries (if not needed) but the 4.x api only therefore. ...
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How do I remove the passphrase for the SSH key without having to create a new key?

... I realise now, this is quite painful when you are trying to commit ( Git and SVN ) to a remote location over SSH many times in an hour. ...
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Ways to save enums in database

...store enumerations as numerical ordinal values anymore; it makes debugging and support way too difficult. We store the actual enumeration value converted to string: public enum Suit { Spade, Heart, Diamond, Club } Suit theSuit = Suit.Heart; szQuery = "INSERT INTO Customers (Name, Suit) " + ...
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JOIN two SELECT statement results

... a database of tasks where each record is a separate task, with deadlines (and a PALT , which is just an INT of days from start to deadline. Age is also an INT number of days.) ...
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Generating v5 UUID. What is name and namespace?

I've read the man page, but I do not undestand what name and namespace are for. 3 Answers ...
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IE8 and JQuery's trim()

... Thanks, I thought JQuery's functions were chain-able and that's how they all worked! – Abs Aug 9 '10 at 11:01 38 ...