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What does “coalgebra” mean in the context of programming?
... give any insight on how it's useful or why we care. I'll get to that in a bit, once I find or come up with a good example or two :P.
Classes and Objects
After reading around a bit, I think I have a good idea of how to use coalgebras to represent classes and objects. We have a type C that contains...
Check if a class is derived from a generic class
...ou are looking for.
– oillio
May 5 '10 at 4:04
14
This only works for concrete type inheritance.....
How can Perl's print add a newline by default?
...meone really wants to avoid them, this is one way. If I had to maintain a bit of code that uses this technique, I'd probably refactor it out pronto.
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vs
...gured to serve files in ISO-8859-1 by default, so you need to add the following line to your .htaccess file:
AddDefaultCharset UTF-8
This will configure Apache to serve your files declaring UTF-8 encoding in the Content-Type response header, but your files must be saved in UTF-8 (without BOM) to ...
Alter table add multiple columns ms sql
...o remove the brackets
ALTER TABLE Countries
ADD
HasPhotoInReadyStorage bit,
HasPhotoInWorkStorage bit,
HasPhotoInMaterialStorage bit,
HasText bit;
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What does (function($) {})(jQuery); mean?
...lid way to create a plugin since you're extending the prototype. Albeit a bit unnecessary.
– tbranyen
May 30 '10 at 15:32
1
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PHP Fatal error: Call to undefined function json_decode()
... goes on to specifically list the JSON license as nonfree.
Yes it seems a bit silly. Nevertheless Debian has removed the non-compliant JSON extension, and instead offered a replacement extension that is functionally equivalent.
To be clear: PHP itself has NOT removed JSON, it's still in master. Th...
SQLite - UPSERT *not* INSERT or REPLACE
...e AS old ON new.name = old.name;
The exact form of this query can vary a bit. The key is the use of INSERT SELECT with a left outer join, to join an existing row to the new values.
Here, if a row did not previously exist, old.id will be NULL and SQLite will then assign an ID automatically, but if...
Response Content type as CSV
...
Matt Sheppard
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answered Dec 26 '08 at 11:26
AnthonyWJon...
Android Center text on canvas
... text (they are actually the same, overlapping). The gray text is a little bit too low and two much on the right.
This is how I made the test:
import android.app.Activity;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.graphics.Canvas;
import android.graphic...