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Convert a byte array to integer in Java and vice versa
...;> 16),
(byte)(value >> 8),
(byte)value };
}
int fromByteArray(byte[] bytes) {
return ByteBuffer.wrap(bytes).getInt();
}
// packing an array of 4 bytes to an int, big endian, minimal parentheses
// operator precedence: <<, &, |
// when operators of equal pre...
Does Python have a package/module management system?
...wealth of libraries accessible to everyone. Newbies are no longer excluded from using community libraries by the prohibitive difficulty of setup.
However, there remains a number of outstanding frustrations with the Python packaging experience. Cumulatively, they make Python very unwelcoming for new...
What does static_assert do, and what would you use it for?
... your comment: yes, you can have static_assert just sitting out wherever, from the look of it:
class Foo
{
public:
static const int bar = 3;
};
static_assert(Foo::bar > 4, "Foo::bar is too small :(");
int main()
{
return Foo::bar;
}
$ g++ --std=c++0x a.cpp
a.cpp:7: error:...
Is a Java string really immutable?
...e's some suggested further reading: Heinz Kabutz's Reflection Madness talk from JavaZone 2009, which covers a lot of the issues in the OP, along with other reflection... well... madness.
It covers why this is sometimes useful. And why, most of the time, you should avoid it. :-)
...
How to extract a floating number from a string [duplicate]
...
You can use the following regex to get integer and floating values from a string:
re.findall(r'[\d\.\d]+', 'hello -34 42 +34.478m 88 cricket -44.3')
['34', '42', '34.478', '88', '44.3']
Thanks
Rex
share
...
How can I remove a commit on GitHub? [duplicate]
...nt below. Even after force pushing to GitHub, GH still caches your commit. From help.github.com/articles/remove-sensitive-data : "Danger: Once the commit has been pushed you should consider the data to be compromised. If you committed a password, change it! If you committed a key, generate a new one...
Site stopped working in asp.net System.Web.WebPages.Razor.Configuration.HostSection cannot be cast t
...
My case was upgrading from mvc4 to mvc5.
I made sure my references were in sync (with a newly created mvc5 app), updated the web.config file accordingly and it still didn't work.
It finally worked when i changed my web.config file (INSIDE THE VIE...
What is Python used for? [closed]
...Every type conversion in python must be done explicitly. This is different from, for example, Perl or Javascript, where you have weak typing, and can write things like "hello" + 5 to get "hello5".
Python is object oriented, with class-based inheritance. Everything is an object (including classes, fu...
What are metaclasses in Python?
... Python. And Python has a very peculiar idea of what classes are, borrowed from the Smalltalk language.
In most languages, classes are just pieces of code that describe how to produce an object. That's kinda true in Python too:
>>> class ObjectCreator(object):
... pass
...
>>&g...
How to remove globally a package from Composer?
... many commands like install, require or update as if you were running them from the COMPOSER_HOME directory.
Read the related documentation here: http://getcomposer.org/doc/03-cli.md#global
COMPOSER_HOME depends on your system (on Linux it's ~/.composer), see http://getcomposer.org/doc/03-cli.md#...