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ROW_NUMBER() in MySQL
...gle highest col3 for each (col1, col2) pair.
That's a groupwise maximum, one of the most commonly-asked SQL questions (since it seems like it should be easy, but actually it kind of isn't).
I often plump for a null-self-join:
SELECT t0.col3
FROM table AS t0
LEFT JOIN table AS t1 ON t0.col1=t1.co...
Best way to do multiple constructors in PHP
... And could not we also make __construct() private, to prevent someone from ocassionally allocating a "non-ininitialized" instance?
– mlvljr
Apr 13 '11 at 15:08
3
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How do I open an old MVC project in Visual Studio 2012 or Visual Studio 2013?
... guarantee that they do in fact work.
Assuming that you have not already done so step one is to download and install MVC 1, MVC 2 or MVC 3 (close Visual Studio before starting the installation).
Once you have the appropriate flavor of MVC installed the project will still not load in VS 2012. This ...
Finding local IP addresses using Python's stdlib
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One should note that this isn't a platform independent solution. A lot of Linuxes will return 127.0.0.1 as your IP address using this method.
– Jason Baker
Oct 3 '08 at 12:07
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Significant new inventions in computing since 1980
... Windows are much better than any open source OS for the average user. No one wants to admit that.
– RussellH
Jan 12 '09 at 20:32
32
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Can a CSS class inherit one or more other classes?
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do you know if which class prevail, the last ones or the 1st ones and is the behaviour cross browser safe? Let's say we have .firstClass {font-size:12px;} .secondClass {font-size:20px;} will then final font-size be 12px or 20px and is this cross browser safe?
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Can one do a for each loop in java in reverse order?
... 'rule' that we have to accept Jon's answer :) but.. I want to accept this one (even though they are essentially the same) because it does not require me to include another 3rd party library (even though some could argue that that reason breaks one of the prime advantages of OO - reusability).
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How to give border to any element using css without adding border-width to the whole width of elemen
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I've added an answer that allows you to border just one side.
– mikevoermans
May 3 '13 at 16:22
2
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Change application's starting activity
...you use the AndroidManifest.xml file. You can actually even have more than one launcher activity specified in your application manifest. To make an activity seen on the launcher you add these attributes to your activity in the manifest:
<intent-filter>
<action android:name="android.int...
How can I detect the encoding/codepage of a text file
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If you completely forget everything I just explained, please remember one extremely important fact. It does not make sense to have a string without knowing what encoding it uses. You can no longer stick your head in the sand and pretend that "plain" text is ASCII.
There Ain't No Such Thing As...