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Using python map and other functional tools
...u ALWAYS get the same output. This avoids a vipers nest of bugs introduced by having global state. As maptest depends on an external definition of bars, this principle is broken.
– image_doctor
Jul 10 '13 at 13:22
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Differences between utf8 and latin1
...s article useful (and even more if you know a bit Java).
Note that full 4-byte UTF-8 support was only introduced in MySQL 5.5. Before that version, it only goes up to 3 bytes per character, not 4 bytes per character. So, it supported only the BMP plane and not e.g. the Emoji plane. If you want full...
Python: Using .format() on a Unicode-escaped string
...coding for your environment, which was likely set to UTF-8. (You can check by doing import sys; print sys.stdout.encoding)
>>> print "{0}".format(s)
fails because format tries to match the encoding of the type that it is called on (I couldn't find documentation on this, but this is the be...
In MySQL, can I copy one row to insert into the same table?
...
Update 07/07/2014 - The answer based on my answer, by Grim..., is a better solution as it improves on my solution below, so I'd suggest using that.
You can do this without listing all the columns with the following syntax:
CREATE TEMPORARY TABLE tmptable SELECT * FROM tabl...
ExecuteReader requires an open and available Connection. The connection's current state is Connectin
...r maintains ownership of the physical
connection. It manages connections by keeping alive a set of active
connections for each given connection configuration. Whenever a user
calls Open on a connection, the pooler looks for an available
connection in the pool. If a pooled connection is avail...
Java abstract interface
...abstract interface?
No, same rules apply. The method must be implemented by any (concrete) implementing class.
If abstract is obsolete, why is it included in Java? Is there a history for abstract interface?
Interesting question. I dug up the first edition of JLS, and even there it says "This...
How to create a hash or dictionary object in JavaScript [duplicate]
...JavaScript. It can be used instead of simply using Object. It is supported by current versions of all major browsers.
Maps do not support the [subscript] notation used by Objects. That syntax implicitly casts the subscript value to a primitive string or symbol. Maps support any values as keys, so y...
git diff two files on same branch, same commit
...t for that, just use diff fileA.php fileB.php (or vimdiff if you want side by side comparison)
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Is it safe to push_back an element from the same vector?
...ilar to it) as a potential defect in the standard:
1) Parameters taken by const reference can be changed during execution
of the function
Examples:
Given std::vector v:
v.insert(v.begin(), v[2]);
v[2] can be changed by moving elements of vector
The proposed resolution was...
Default constructor vs. inline field initialization
...you can save lines of code (and make your code slightly more maintainable) by keeping initialisation in one place.
Like Michael said, there's a matter of taste involved as well - you might like to keep code in one place. Although if you have many constructors your code isn't in one place in any cas...