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What's the (hidden) cost of Scala's lazy val?
One handy feature of Scala is lazy val , where the evaluation of a val is delayed until it's necessary (at first access).
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Why does pylint object to single character variable names?
I'm still getting used to python conventions and using pylint to make my code more pythonic, but I'm puzzled by the fact that pylint doesn't like single character variable names. I have a few loops like this:
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How to use LINQ to select object with minimum or maximum property value
... Probably a little slower than just implementing IComparable and using Min (or a for loop). But +1 for a O(n) linqy solution.
– Matthew Flaschen
May 27 '09 at 6:07
4...
How to get ID of the last updated row in MySQL?
...T 1;
SELECT @update_id;
EDIT by aefxx
This technique can be further expanded to retrieve the ID of every row affected by an update statement:
SET @uids := null;
UPDATE footable
SET foo = 'bar'
WHERE fooid > 5
AND ( SELECT @uids := CONCAT_WS(',', fooid, @uids) );
SELECT @uids;
This w...
What are allowed characters in cookies?
What are the allowed characters in both cookie name and value? Are they same as URL or some common subset?
13 Answers
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What is the difference between onPause() and onStop() of Android Activites?
From android doc here http://developer.android.com/reference/android/app/Activity.html ,
it said 'Activity comes into foreground' will call onPause() , and 'Activity is no longer visible' will call onStop() .
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How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...
Proper way to renew distribution certificate for iOS
... my provisioning files. How do I properly renew it? Should I revoke it now and request a new one? If I do that than will all my live apps be taken down?
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Bootstrap control with multiple “data-toggle”
... "data-toggle".
For example, lets say I want a button that has a "tooltip" and a "button" toggle assigned
to it.
Tried data-toggle="tooltip button", but only the tooltip worked.
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socket.io and session?
...at I am thinking about this.... why not just set the store for the cookies and the store for the socket to the same store?
– James
Feb 2 '13 at 19:59
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