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Why not inherit from List?
...performance burden of, say, virtual methods, then any modern language (C#, Java, etc) is not the language for you. I have a laptop right here that could run a simulation of every arcade game I played as a child simultaneously. This allows me to not worry about a level of indirection here and there.
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How to decide when to use Node.js?
...how good Node.js is. Considering how much I love working with jQuery and JavaScript in general, I can't help but wonder how to decide when to use Node.js. The web application I have in mind is something like Bitly - takes some content, archives it.
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Why covariance and contravariance do not support value type
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@André: C# is not Java. The C#'s int keyword is an alias for the BCL's System.Int32, which is in fact a subtype of object (an alias of System.Object). In fact, int's base class is System.ValueType who's base class is System.Object. Try evaluat...
What is the smallest possible valid PDF?
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In Java, use this:
private static String samplepdf = "255044462D312E0D747261696C65723C3C2F526F6F743C3C2F50616765733C3C2F4B6964735B3C3C2F4D65646961426F785B302030203320335D3E3E5D3E3E3E3E3E3E";
and then
byte[] bytes = hexStringTo...
Actionbar notification count icon (badge) like Google has
...h="2dp"/>
</shape>
com/ubergeek42/WeechatAndroid/WeechatActivity.java
Here we make it clickable and updatable! I created an abstract listener that provides Toast creation on onLongClick, the code was taken from from the sources of ActionBarSherlock.
private int hot_number = 0;
private Te...
Why do we need boxing and unboxing in C#?
...erence type wrapping the value type. unless i am mistaken, that is true in Java, but not C#. In C# the ones that show up blue in the IDE are aliases for their struct definition. So: int = Int32, bool = Boolean, string = String. The reason to use bool over Boolean is because it is suggested as so in ...
How can I profile C++ code running on Linux?
...t call-stack samples of the thread pool at a point in time, as there is in Java.
P.P.S As a rough generality, the more layers of abstraction you have in your software, the more likely you are to find that that is the cause of performance problems (and the opportunity to get speedup).
Added: It mig...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
Coming from other C-derived languages (like Java or C#) to C++, it is at first very confusing that C++ has three ways to refer to members of a class: a::b , a.b , and a->b . When do I use which one of these operators?
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Simple explanation of MapReduce?
...and commodity-computer clusters. In contrast to Hadoop, that is written in Java, the Google’s framework is written in C++. The document describes how a parallel framework would behave using the Map and Reduce functions from functional programming over large data sets.
In this solution there would ...
Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
...f 6 < N < 11 then K=2 ; otherwise: K=ceil((N+1)/5)
Written in C/C++/Java: int K = (N<7)?(1) : (N<11)?(2) : ((N+5)/5);
And if N > 10, then the number of words with length 3 will be: K*5-1-N. With this, we can calculate the number of printed As:
If N > 10, the number of As will be...