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Inheritance vs. Aggregation [closed]
There are two schools of thought on how to best extend, enhance, and reuse code in an object-oriented system:
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How to remove focus without setting focus to another control?
I like my UIs to be intuitive; each screen should naturally and unobtrusively guide the user on to the next step in the app. Barring that, I strive to make things as confusing and confounding as possible.
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Open firewall port on CentOS 7
I am using CentOS 7 and I have to ensure that ports 2888 and 3888 are open.
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Storing Data in MySQL as JSON
I thought this was a n00b thing to do. And, so, I've never done it. Then I saw that FriendFeed did this and actually made their DB scale better and decreased latency. I'm curious if I should do this. And, if so, what's the right way to do it?
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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...hing out of the way first. The explanation that yield from g is equivalent to for v in g: yield v does not even begin to do justice to what yield from is all about. Because, let's face it, if all yield from does is expand the for loop, then it does not warrant adding yield from to the language and p...
What C++ Smart Pointer Implementations are available?
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C++03
std::auto_ptr - Perhaps one of the originals it suffered from first draft syndrome only providing limited garbage collection facilities. The first downside being that it calls delete upon destruction making them unacceptable for hol...
How does PHP 'foreach' actually work?
Let me prefix this by saying that I know what foreach is, does and how to use it. This question concerns how it works under the bonnet, and I don't want any answers along the lines of "this is how you loop an array with foreach ".
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How to get RelativeLayout working with merge and include?
I have been trying for a few days now to make my layouts more efficient by converting from using several levels of nested LinearLayouts to one RelativeLayout and have come across a few problems that I haven not been able to find a workaround for...
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How to increase font size in the Xcode editor?
To increase font-size in Xcode is a pain.
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If strings are immutable in .NET, then why does Substring take O(n) time?
...xtract tiny substrings from tiny strings, so how the complexity grows asymptotically is completely irrelevant.
The long answer is:
An immutable data structure built such that operations on an instance permit re-use of the memory of the original with only a small amount (typically O(1) or O(lg n)) ...