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Sort a list by multiple attributes?
...orted(s, key = lambda x: (x[1], x[2]))
Or you can achieve the same using itemgetter (which is faster and avoids a Python function call):
import operator
s = sorted(s, key = operator.itemgetter(1, 2))
And notice that here you can use sort instead of using sorted and then reassigning:
s.sort(key...
Conditions for automatic generation of default/copy/move ctor and copy/move assignment operator?
I want to refresh my memory on the conditions under which a compiler typically auto generates a default constructor, copy constructor and assignment operator.
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Remove duplicate elements from array in Ruby
...follow
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edited May 20 at 4:57
the Tin Man
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B-Tree vs Hash Table
...L, an index type is a b-tree, and access an element in a b-tree is in logarithmic amortized time O(log(n)) .
5 Answers
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?
...d use JDK 7. Now I downloaded the latest version of IDEA IntelliJ, 11. But it doesn't seem to start without JDK 6. Is there any workaround?
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sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and t
...ng me the error, The actual string I am trying to insert is 74 chars long, it's: "/gifs/epic-fail-photos-there-i-fixed-it-aww-man-the-tire-pressures-low.gif"
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Singleton by Jon Skeet clarification
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No, this is nothing to do with closures. A nested class has access to its outer class's private members, including the private constructor here.
Read my article on beforefieldinit. You may or may not want the no-op static constructor - it depends on wh...
CSS - Overflow: Scroll; - Always show vertical scroll bar?
...to this problem myself. OSx Lion hides scrollbars while not in use to make it seem more "slick", but at the same time the issue you addressed comes up: people sometimes cannot see whether a div has a scroll feature or not.
The fix: In your css include -
::-webkit-scrollbar {
-webkit-appearance:...
PHP: Move associative array element to beginning of array
... ['one' => $myArray['one']] + $myArray;
Array keys are unique, so it would be impossible for it to exist in two locations.
See further at the doc on Array Operators:
The + operator returns the right-hand array appended to the left-hand array; for keys that exist in both arrays, the element...
How can you find out which process is listening on a port on Windows?
...re).OwningProcess
Old answer, cmd
C:\> netstat -a -b
(Add -n to stop it trying to resolve hostnames, which will make it a lot faster.)
Note Dane's recommendation for TCPView. It looks very useful!
-a Displays all connections and listening ports.
-b Displays the executable involved in creatin...