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What's the difference between the atomic and nonatomic attributes?
...m Makes sense. I like your comment to another answer that thread-safety is more a model-level concern. From an IBM thread safety definition: ibm.co/yTEbjY "If a class is correctly implemented, which is another way of saying that it conforms to its specification, no sequence of operations (reads or w...
How to avoid null checking in Java?
... The only difference is that with assertions it might happen sooner, in a more-meaningful way and possibly with extra information, which may help you to figure out why it happened if you weren't expecting it.
(1) is a little harder. If you have no control over the code you're calling then you're ...
What is Unicode, UTF-8, UTF-16?
...If you'll be working mostly with ASCII characters, then UTF-8 is certainly more memory efficient. However, if you're working mostly with non-European scripts, using UTF-8 could be up to 1.5 times less memory efficient than UTF-16. When dealing with large amounts of text, such as large web-pages or l...
source of historical stock data [closed]
...n. So to start with a "discount" data feed will do, but as soon as you run more comprehensive backtests you might run into problems depending on what you do. If you just look at, let's say, the S&P 500 stocks this will not be so much a problem though and a "cheap" intraday feed will do.
What y...
Solving “Who owns the Zebra” programmatically?
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Read an Excel file directly from a R script
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best practice to generate random token for forgot password
...t and then try through a couple of likely tokens. This is also possible if more_entropy is used, as the additional entropy is similarly weak. Thanks to @NikiC and @ScottArciszewski for pointing this out.
For more details see
http://phpsecurity.readthedocs.org/en/latest/Insufficient-Entropy-For-R...
How fast is D compared to C++?
...se flags runtime improves considerably. Now D is at 12.9 s. But still runs more than 3 times as long. @Matthieu M. I would not mind to test a program with boundschecking in slow motion and once it is debugged let it do its computations without boundschecking. (I do the same with C++ now.)
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How do I discover memory usage of my application in Android?
...lly mean that only results in a vague conclusion.)
Note: we now have much more extensive documentation on Managing Your App's Memory that covers much of the material here and is more up-to-date with the state of Android.
First thing is to probably read the last part of this article which has some ...
Biggest advantage to using ASP.Net MVC vs web forms
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Link to the source of this answer with more details: weblogs.asp.net/shijuvarghese/archive/2008/07/09/…
– DK.
Oct 25 '11 at 18:17
add a c...