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The Use of Multiple JFrames: Good or Bad Practice? [closed]
...veloping an application which displays images, and plays sounds from a database. I'm trying to decide whether or not to use a separate JFrame to add images to the database from the GUI.
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
...t buy the "the point of..." claim; it seems that you're defining the point based on what it does, rather than what a programmer might want.
– ShreevatsaR
Aug 18 '13 at 17:25
2
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performSelector may cause a leak because its selector is unknown
...uments these methods as "inherently unsafe"
The idea of sending messages based on a named selector is not, however, an "inherently unsafe" feature. This idea has been used successfully for a long time in Objective-C as well as many other programming languages.
1 All Objective-C methods have two...
Why doesn't Java support unsigned ints?
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UriUri
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Find the nth occurrence of substring in a string
...e most prominent approaches presented so far, namely @bobince's findnth() (based on str.split()) vs. @tgamblin's or @Mark Byers' find_nth() (based on str.find()). I will also compare with a C extension (_find_nth.so) to see how fast we can go. Here is find_nth.py:
def findnth(haystack, needle, n):...
AWS Difference between a snapshot and AMI
... AMIs (and corresponding instances):
instance-store (sometimes called S3-based). These are less common and I don't recommend them for beginners. An instance-store AMI is a copy of the root instance-store volume plus some metadata, all saved in an S3 bucket in a special format
EBS boot. This is ...
How do I determine whether my calculation of pi is accurate?
... = # of decimal digits desired
p = 64-bit prime number
Compute A using base 10 arithmetic and B using binary arithmetic.
If A = B, then with "extremely high probability", the conversion is correct.
For further reading, see my blog post Pi - 5 Trillion Digits.
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How does one change the language of the command line interface of Git?
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With Git for Windows 2.x (64 bit) this will be in C:\Program Files\Git\mingw64\share\locale\$LANG\LC_MESSAGES\git.mo.
– Koraktor
JavaScript: What are .extend and .prototype used for?
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Javascript's inheritance is prototype based, so you extend the prototypes of objects such as Date, Math, and even your own custom ones.
Date.prototype.lol = function() {
alert('hi');
};
( new Date ).lol() // alert message
In the snippet above, I define a met...
Get Root Directory Path of a PHP project
... when you have two levels of directories. Right? I mean, when call it from base_project_directory/folder1/folder2/folder3/file.php it doesn't return the base_project_directory.
– Ali Khalili
Apr 12 '19 at 15:03
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