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C++ performance vs. Java/C#
My understanding is that C/C++ produces native code to run on a particular machine architecture. Conversely, languages like Java and C# run on top of a virtual machine which abstracts away the native architecture. Logically it would seem impossible for Java or C# to match the speed of C++ because ...
Sending a JSON to server and retrieving a JSON in return, without JQuery
...nge = function () {
if (xhr.readyState === 4 && xhr.status === 200) {
var json = JSON.parse(xhr.responseText);
console.log(json.email + ", " + json.password);
}
};
var data = JSON.stringify({"email": "hey@mail.com", "password": "101010"});
xhr.send(data);
Sending an...
How do I scale a stubborn SVG embedded with the tag?
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None of the answers given here worked for me when I asked this back in 2009. As I now had the same issue again I noticed that using the <img> tag and width together with an svg works fine.
<img width="400" src="image.svg">
...
Plot correlation matrix into a graph
..."AOE", col=col1(10),addCoef.col="grey")
corrplot(M, order="AOE", col=col2(200))
corrplot(M, order="AOE", col=col2(200),addCoef.col="grey")
corrplot(M, order="AOE", col=col2(20), cl.length=21,addCoef.col="grey")
corrplot(M, order="AOE", col=col2(10),addCoef.col="grey")
corrplot(M, order="AOE", col=...
Best introduction to C++ template metaprogramming? [closed]
Static metaprogramming (aka "template metaprogramming") is a great C++ technique that allows the execution of programs at compile-time. A light bulb went off in my head as soon as I read this canonical metaprogramming example:
...
What is the effect of extern “C” in C++?
What exactly does putting extern "C" into C++ code do?
15 Answers
15
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error: Unable to find vcvarsall.bat
...out that the instructions here may be dangerous. Consider using the Visual C++ 2008 Express edition or the purpose-built Microsoft Visual C++ Compiler for Python (details) and NOT using the original answer below. Original error message means the required version of Visual C++ is not installed.
Fo...
How can I use a C++ library from node.js?
How can I use a C++ library from node.js?
8 Answers
8
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Python Flask, how to set content type
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As simple as this
x = "some data you want to return"
return x, 200, {'Content-Type': 'text/css; charset=utf-8'}
Hope it helps
Update:
Use this method because it will work with both python 2.x and python 3.x
and secondly it also eliminates multiple header problem.
from flask import R...
Why would anybody use C over C++? [closed]
Although people seem to like to complain about C++, I haven't been able to find much evidence as to why you would want to choose C over C++. C doesn't seem to get nearly as much flak and if C++ has all these problems why can't you just restrict yourself to the C subset? What are your thoughts/expe...