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When to use LinkedList over ArrayList in Java?
..., though O(1) for index = 0.
ArrayList<E>, on the other hand, allow fast random read access, so you can grab any element in constant time. But adding or removing from anywhere but the end requires shifting all the latter elements over, either to make an opening or fill the gap. Also, if you a...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
...inding slow ones. Then again, I could say the same for WPF. GTK# is plenty fast though so there is no reason they have to be slow.
Issue: Java has a larger ecosystem of libraries available.
Answer: Probably true, but it is a non-issue in practice.
Practically every Java library (including the JDK...
@property retain, assign, copy, nonatomic in Objective-C
... accessed simultaneously from different threads.
For this reason, it’s faster to access a nonatomic property than an atomic one.
@property (nonatomic)NSString *name;
retain is required when the attribute is a pointer to an object.
The setter method will increase retain count of th...
How to validate an email address using a regular expression?
....
Correcting the 00 bug in the IP pattern, we obtain a working and fairly fast regex. (Scrape the rendered version, not the markdown, for actual code.)
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09...
O(nlogn) Algorithm - Find three evenly spaced ones within binary string
...x2 + x4 + x5+x8). This step is O(n).
Find the polynomial q = p2, using the Fast Fourier Transform. For the example above, we get the polynomial q(x) = x16 + 2x13 + 2x12 + 3x10 + 4x9 + x8 + 2x7 + 4x6 + 2x5 + x4 + 2x3 + x2. This step is O(n log n).
Ignore all terms except those corresponding to x2k fo...
Accessing a Shared File (UNC) From a Remote, Non-Trusted Domain With Credentials
...I can watch the sessions, but the list of current sessions updates just as fast when my app does not use these APIs.
– flipdoubt
Oct 28 '09 at 11:55
...
What is the difference between user and kernel modes in operating systems?
... only uses 0 and 3:
0 for kernel
3 for users
This is the most hard and fast definition of kernel vs userland.
Why Linux does not use rings 1 and 2: CPU Privilege Rings: Why rings 1 and 2 aren't used?
How is the current ring determined?
The current ring is selected by a combination of:
globa...
How to create GUID / UUID?
...e most popular answer by over 12X, the accepted answer by over 9X, and the fast-non-compliant answer by 2-3X. And I'm still rfc4122 compliant.
Interested in how? I've put the full source on http://jsfiddle.net/jcward/7hyaC/3/ and on http://jsperf.com/uuid-generator-opt/4
For an explanation, let'...
What is the difference between Bower and npm?
...n is a very important potential replacement/supplement for npm these days: fast, deterministic, offline package-management that builds on what npm gives you. It's worth a look for any JS project, particularly since it's so easy to swap it in/out.
EDIT (May 2019)
"Bower has finally been deprecated. ...
Understanding slice notation
...top, step:
sliceable[start:stop:step]
Python slicing is a computationally fast way to methodically access parts of your data. In my opinion, to be even an intermediate Python programmer, it's one aspect of the language that it is necessary to be familiar with.
Important Definitions
To begin with, l...