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What Makes a Method Thread-safe? What are the rules?
...reason why it is so hard to get right is because you must have a complete knowledge of the threading behaviour of the entire program in order to ensure its safety.
Again, look at my example: every method is trivial. It is the way that the methods interact with each other at a "global" level that m...
What is the best Battleship AI?
...ee.png
After considering all leaves of that tree that jive with what you know about the world (e.g. ships can't overlap, all hit squares must be ships, etc.) you can count how often ships occur at each unexplored position to estimate the likelihood that a ship is sitting there.
This can be visua...
How to get unique device hardware id in Android? [duplicate]
...r.android.com/training/articles/user-data-ids
Old Answer - Not relevant now.
You check this blog in the link below
http://android-developers.blogspot.in/2011/03/identifying-app-installations.html
ANDROID_ID
import android.provider.Settings.Secure;
private String android_id = Secure.getString(...
Suppress command line output
...e are subtle differences between the shell syntax and CMD.EXE.
Update: I know the OP understands the special nature of the "file" named NUL I'm writing to here, but a commenter didn't and so let me digress with a little more detail on that aspect.
Going all the way back to the earliest releases of...
Redis strings vs Redis hashes to represent JSON: efficiency?
...:
If you use just single fields on most of your accesses.
If you always know which fields are available
P.S.: As a rule of the thumb, go for the option which requires fewer queries on most of your use cases.
share
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What are copy elision and return value optimization?
...If you want to avoid possible copy elision, use -fno-elide-constructors.
Now almost all compilers provide copy elision when optimisation is enabled (and if no other option is set to disable it).
Conclusion
With each copy elision, one construction and one matching destruction of the copy are om...
Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
... closing tags match a previous opening tag. To understand it, you need to know which element is being closed. Without any means to "remember" what opening tags you've seen, no chance.
Note however that most "regex" libraries actually permit more than just the strict definition of regular expression...
What's the difference between faking, mocking, and stubbing?
I know how I use these terms, but I'm wondering if there are accepted definitions for faking , mocking , and stubbing for unit tests? How do you define these for your tests? Describe situations where you might use each.
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Is there a “previous sibling” selector?
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@ArchLinuxTux: "This limitation is now removed", so once upon of time we possibly can use this feature :D.
– Jacob van Lingen
Feb 12 at 11:57
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Is C++ context-free or context-sensitive?
...ble undertaking. Even writing a C++ program is difficult, and as far as I know none have been proven correct. This is why the standard does not attempt to provide a complete formal grammar, and why it chooses to write some of the parsing rules in technical English.
What looks like a formal grammar ...