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How to compare dates in datetime fields in Postgresql?
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casting every update_date in the table vs. casting the single value of the query parameter is terribly inefficient, and makes sure the server won't be able to leverage indexes on that column. i'm tempted to -1 this.
– just somebody
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Why is it not advisable to have the database and web server on the same machine?
...ntally very easily. Given that we have more memory than disk in use (64GB vs. ~40GB), wouldn't it be better for performance to keep it all on the same machine?
– Beep beep
May 8 '11 at 2:56
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What is the difference between '@' and '=' in directive scope in AngularJS?
... @ for one property and = for another
What is the difference between & vs @ and = in angularJS
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Best way in asp.net to force https for an entire site?
...his works, but it was dangerous for me: when I attempted to run locally in VS 2010 with this code running, my start page never loaded; instead, I just received a "This webpage is not available" message. To fix, I added a second condition to test if the url contains the string "localhost": if it does...
How to create circle with Bézier curves?
...h, since this one has a max deviation of +0.027% and a min deviation of -0 vs the true circle. It's only ever bigger than the real circle the better improved approximation is done by moving C in by half of 0.027%. If you want the midpoints on the circle though, this is certainly the way to do it.
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How to get string width on Android?
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Also worth noting @arberg's reply below about the pixels painted vs the advance width ("number of pixels (in float) which the cursor should be advanced after drawing the given string"), in case you need to deal with that.
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Why use bzero over memset?
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Wanted to mention something about bzero vs. memset argument. Install ltrace and then compare what it does under the hood.
On Linux with libc6 (2.19-0ubuntu6.6), the calls made are exactly the same (via ltrace ./test123):
long m[] = {0}; // generates a call to mems...
What's the best practice for primary keys in tables?
...hese "primary key" can change for real world situations.
On surrogate vs natural key, I refer to the rules above. If the natural key is small and will never change it can be used as a primary key. If the natural key is large or likely to change I use surrogate keys. If there is no primary key I...
Is modern C++ becoming more prevalent? [closed]
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community wiki
5 revs, 5 users 73%JohnMcG
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How do I call setattr() on the current module?
...ct). I use vars() at module scope as it saves 3 characters, one syllable, vs its synonym-in-that-scope globals();-)
– Alex Martelli
May 29 '10 at 3:39
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