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What is hashCode used for? Is it unique?
I notice there is a getHashCode() method in every controls, items, in WP7, which return a sequence of number. Can I use this hashcode to identify an item? For example I want to identify a picture or a song in the device, and check it whereabout. This could be done if the hashcode given for specifi...
Why declare a struct that only contains an array in C?
I came across some code containing the following:
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Visualizing branch topology in Git
I'm playing with Git in isolation on my own machine, and I find it difficult to maintain a mental model of all my branches and commits. I know I can do a git log to see the commit history from where I am, but is there a way to see the entire branch topography, something like these ASCII maps that ...
Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
I've seen definitions in C
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Why always ./configure; make; make install; as 3 separate steps?
Every time you compile something from source, you go through the same 3 steps:
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Difference between jQuery parent(), parents() and closest() functions
I have been using jQuery for a while. I wanted to use the parent() selector. I also came up with the closest() selector. Could not find any difference between them. Is there any? If yes, what?
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
In the header of a Bash script, what's the difference between those two statements:
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MongoDB Many-to-Many Association
How would you do a many-to-many association with MongoDB?
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Which kind of pointer do I use when?
Ok, so the last time I wrote C++ for a living, std::auto_ptr was all the std lib had available, and boost::shared_ptr was all the rage. I never really looked into the other smart pointer types boost provided. I understand that C++11 now provides some of the types boost came up with, but not all ...
Colors with unix command “watch”?
Some commands that I use display colors, but when I use them with watch the colors disappears:
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