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What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...OS X uses 2.2), PHP and all the extensions you need, then upgrade all with one command. Forget to do the same with Homebrew.
MacPorts support groups.
foo@macpro:~/ port select --summary
Name Selected Options
==== ======== =======
db none db46 none
gcc ...
Why does base64 encoding require padding if the input length is not divisible by 3?
...me must relate back to bytes.
Base256 fits exactly into this paradigm. One byte is equal to one character in base256.
Base16, hexadecimal or hex, uses 4 bits for each character. One byte can represent two base16 characters.
Base64 does not fit evenly into the byte paradigm (nor does base32...
Why can't I forward-declare a class in a namespace using double colons?
...space - it is a completely different class that has nothing to do with the one you declared here.
Once you get to the point of defining the pre-declared class, you don't need to "reopen" the namespace again. You can define it in the global namespace (or any namespace enclosing your Namespace) as
c...
Having Django serve downloadable files
...ded string. Thus for example "Örinää.mp3" file cannot be served. And if one omits the smart_str, the Django itself throws ascii encoding error because all headers are encoded to ascii format before sending. Only way that I know of to circumvent this problem is to reduce X-sendfile filenames to on...
Changing a specific column name in pandas DataFrame
...
A one liner does exist:
In [27]: df=df.rename(columns = {'two':'new_name'})
In [28]: df
Out[28]:
one three new_name
0 1 a 9
1 2 b 8
2 3 c 7
3 4 d 6
4 5 e ...
Multiple contexts with the same path error running web service in Eclipse using Tomcat
...e same line, but outside the viewport and really far away from the visible one.
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What does jquery $ actually return?
...ll the special jQuery methods.
It never returns null, or another type. If one element is found, the jQuery object will have only one child. If no elements are found, the jQuery object will be empty.
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How can I concatenate regex literals in JavaScript?
...).join("").replace(/(.)(?=.*\1)/g, "");
var regex3 = new RegExp(expression_one.source + expression_two.source, flags);
// regex3 is now /foobar/gy
It's just more wordy than just having expression one and two being literal strings instead of literal regular expressions.
...
Hand Coded GUI Versus Qt Designer GUI [closed]
...y a different tool for that new problem. I totally agree with Steve S that one advantage of Designer is that someone else who's not a programmer can do the layout.
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Correct way to use StringBuilder in SQL
... content we're going to append. The default size used if you don't specify one is 16 characters, which is usually too small and results in the StringBuilder having to do reallocations to make itself bigger (IIRC, in the Sun/Oracle JDK, it doubles itself [or more, if it knows it needs more to satisfy...