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Is the sizeof(some pointer) always equal to four?

...o other guarantees, including no guarantee that sizeof(int *) == sizeof(double *). In practice, pointers will be size 2 on a 16-bit system (if you can find one), 4 on a 32-bit system, and 8 on a 64-bit system, but there's nothing to be gained in relying on a given size. ...
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Merging: Hg/Git vs. SVN

I often read that Hg (and Git and...) are better at merging than SVN but I have never seen practical examples of where Hg/Git can merge something where SVN fails (or where SVN needs manual intervention). Could you post a few step-by-step lists of branch/modify/commit/...-operations that show where S...
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calling non-static method in static method in Java [duplicate]

...hod is to have an instance of the class containing the non-static method. By definition, a non-static method is one that is called ON an instance of some class, whereas a static method belongs to the class itself. share ...
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Is errno thread-safe?

In errno.h , this variable is declared as extern int errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ? ...
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Why is there “data” and “newtype” in Haskell? [duplicate]

It seems that a newtype definition is just a data definition that obeys some restrictions (e.g., only one constructor), and that due to these restrictions the runtime system can handle newtype s more efficiently. And the handling of pattern matching for undefined values is slightly different. ...
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CreateElement with id?

I'm trying to modify this code to also give this div item an ID, however I have not found anything on google, and idName does not work. I read something about append , however it seems pretty complicated for a task that seems pretty simple, so is there an alternative? Thanks :) ...
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Missing include “bits/c++config.h” when cross compiling 64 bit program on 32 bit in Ubuntu

I am running the 32bit version of Ubuntu 10.10 and trying to cross compile to a 64 bit target. Based on my research, I have installed the g++-multilib package. ...
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Regular expression to find URLs within a string

...regular expressions on Google for determining if an entire string is a URL but I need to be able to search an entire string for URLs. For example, I would like to be able to find www.google.com and http://yahoo.com in the following string: ...
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How to create a static library with g++?

...would like to create header.a . Test the header.a in test.cpp . I am using g++ for compiling. 3 Answers ...
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Eliminate extra separators below UITableView

When I set up a table view with 4 rows, there are still extra separators lines (or extra blank cells) below the filled rows. ...