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How to shuffle a std::vector?
...
From C++11 onwards, you should prefer:
#include <algorithm>
#include <random>
auto rng = std::default_random_engine {};
std::shuffle(std::begin(cards_), std::end(cards_), rng);
Live example on Coliru
Make sure to reuse the same instance of rng throu...
How do I create a namespace package in Python?
...but the old pkgutil explicit namespace package method has been extended to include implicit namespace packages.
If you have an existing regular package that has an __init__.py like this:
from pkgutil import extend_path
__path__ = extend_path(__path__, __name__)
... the legacy behavior is to add ...
C++ templates Turing-complete?
...
Example
#include <iostream>
template <int N> struct Factorial
{
enum { val = Factorial<N-1>::val * N };
};
template<>
struct Factorial<0>
{
enum { val = 1 };
};
int main()
{
// Note this va...
How to check if a DateTime occurs today?
...fter a short time. So maybe it would be best to keep the exact story date (including time, preferably UTC) and check if less than 24 hours (or whatever) have passed, which is simple (dates can be subtracted, which gives you a TimeSpan with a TotalHours or TotalDays property).
...
R: rJava package install failing
... me on Ubuntu 12.04 and R version 3.0
cd /usr/lib/jvm/java-6-sun-1.6.0.26/include
this is the directory that has jni.h
Next create a soft link to another required header file (I'm too lazy to find out how to include more than one directory in the JAVA_CPPFLAGS option below):
sudo ln -s linux/jn...
Unzip files programmatically in .net
...fully on many projects. I know it's a third party tool, but source code is included and could provide some insight if you chose to reinvent the wheel here.
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Should it be “Arrange-Assert-Act-Assert”?
...hrows Exception {
Range range = new Range(0, 5);
assertFalse(range.includes(7));
range.encompass(7);
assertTrue(range.includes(7));
}
It could be that I wrote Range.includes() to simply return true. I didn't, but I can imagine that I might have. Or I could have written it wrong i...
“Invalid signature file” when attempting to run a .jar
... Unfortunately some of us use things like "maven shade plugin" so including verbatim copies of the original jar is not as easy in those cases...
– rogerdpack
Jun 11 '15 at 18:26
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IntelliJ - Convert a Java project/module into a Maven project/module
...operties>
<dependencies>
<!--All dependencies to put here, including module dependencies-->
</dependencies>
<build>
<directory>${project.basedir}/target</directory>
<outputDirectory>${project.build.directory}/classes</outputDirectory>
...
Entity framework linq query Include() multiple children entities
This may be a really elementry question but whats a nice way to include multiple children entities when writing a query that spans THREE levels (or more)?
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