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How will I know when to create an interface?
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First one is called polymorphism. Second one is snakes oil - unless sublcass is baseclass (there's no violation of Liskov substitution principle), You should favor composition over inheritance.
– Arnis Lapsa
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What can MATLAB do that R cannot do? [closed]
... functions.
Here are some of the things that I've observed in the past, none of which should be deal-breakers.
Generally, MATLAB has a better programming environment (e.g. better documentation, better debuggers, better object browser) and is "easier" to use (you can use MATLAB without doing any ...
How to encrypt String in Java
...is to encrypt string which will show up in 2D barcode(PDF-417) so when someone get an idea to scan it will get nothing readable.
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WPF Blurry fonts issue- Solutions
...ical background
There is a in-depth article about WPF Text rendering from one of the WPF Text Program Managers on windowsclient.net: Text Clarity in WPF.
The problem boils down to WPF needing a linearly scaling font-renderer for smooth animations. Pure ClearType on the other hand takes quite a bit...
How to get the children of the $(this) selector?
...ted in this example - jsperf.com/jquery-selectors-comparison-a . Can anyone shed some light? Either I got the test-case wrong, or jquery changed this optimization in the last 4 years.
– Jonathan Vanasco
Nov 21 '13 at 20:19
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How to merge a specific commit in Git
...here C' has a different SHA-1 ID.
Likewise, cherry picking a commit from one branch to another basically involves generating a patch, then applying it, thus losing history that way as well.
This changing of commit IDs breaks git's merging functionality among other things (though if used spari...
Does Python have a ternary conditional operator?
...n does not have a ternary conditional operator, is it possible to simulate one using other language constructs?
26 Answers
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SELECT DISTINCT on one column
...t.MinID
EDIT
once the OP corrected his samle output (previously had only ONE result row, now has all shown), this is the correct query:
declare @TestData table (ID int, sku char(6), product varchar(15))
insert into @TestData values (1 , 'FOO-23' ,'Orange')
insert into @TestData values (2 , ...
How do you represent a graph in Haskell?
... Knot to get around this, but that makes my brain hurt (because I haven't done much of it yet). I've done more of my substantial programming in Mercury than Haskell so far, and Mercury is strict so knot-tying doesn't help.
Usually when I've run into this before I've just resorted to additional indi...
jQuery .live() vs .on() method for adding a click event after loading dynamic html
...vent handling (the event handling is delegated to a parent object).
It's done this way because you can attach the event to the #parent object even when the #child object does not exist yet, but when it later exists and gets clicked on, the click event will bubble up to the #parent object, it will s...