大约有 6,261 项符合查询结果（耗时：0.0154秒） [XML]
What is the difference between Ruby 1.8 and Ruby 1.9
...
/\p{Space}/
Ruby 1.8.6
/[:space:]/
Splat in Middle
Ruby 1.9
def foo(first, *middle, last)
(->a, *b, c {p a-c}).(*5.downto(1))
Fibers
Ruby 1.9
f = Fiber.new do
a,b = 0,1
Fiber.yield a
Fiber.yield b
loop do
a,b = b,a+b
Fiber.yield b
end
end
10.times {puts f.resum...
How can I make setuptools install a package that's not on PyPI?
...hen I run "python setup.py develop", it says "writing dependency_links to foo.egg-info/dependency_links.txt", but doesn't actually download and install the package. I'm using a setuptools-based virtualenv if that helps.
– andrei
Aug 18 '10 at 17:31
...
What is the purpose of Rank2Types?
... a. Show a => a -> b) -> b]
--
example = [mkShowBox 5, mkShowBox "foo"]
result :: [String]
result = map (runShowBox show) example
PS: for anybody reading this who's wondered how come ExistentialTypes in GHC uses forall, I believe the reason is because it's using this sort of technique be...
Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception
...s been thrown. The program is in an unknown state. We do not know whether Foo, Fiddle or Bar threw, why they threw, or what mutations they performed to other state that were not cleaned up. Can you convince me that in that terrible situation it is always the right thing to do to re-lock?
Maybe it...
How do exceptions work (behind the scenes) in c++
...3 -save-temps -c, and looked at the generated assembly file.
.file "foo.cpp"
.section .text._ZN11MyExceptionD1Ev,"axG",@progbits,_ZN11MyExceptionD1Ev,comdat
.align 2
.p2align 4,,15
.weak _ZN11MyExceptionD1Ev
.type _ZN11MyExceptionD1Ev, @function
_ZN11MyExceptionD1Ev...
What is the effect of extern “C” in C++?
...nce of declarations/definitions to have a certain linkage:
extern "C" void foo(int);
extern "C"
{
void g(char);
int i;
}
If you care about the technicalities, they are listed in section 7.5 of the C++03 standard, here is a brief summary (with emphasis on extern "C"):
extern "C" is a linkage-...
Why are const parameters not allowed in C#?
...t that a developer can say a lie cannot be prevented in any language. void foo(const A& a) that modifies the object a is not different from int countApples(Basket b) that return the number of pears. It is just a bug, a bug that compile in any language.
– Alessandro Teruzzi
...
Is recursion a feature in and of itself?
...e validation part to a different method and use it like this:
public bool foo()
{
validInput = GetInput();
while(!validInput)
{
MessageBox.Show("Wrong Input, please try again!");
validInput = GetInput();
}
return hasWon(x, y, piece);
}
If what you did can indeed be solved in th...
What does Ruby have that Python doesn't, and vice versa?
...n likes namespaces. Isn't that the case in Ruby? You don't import bla; bla.foo() in Ruby?
– Lennart Regebro
Jul 11 '09 at 21:13
2
...
CSS selector for first element with class
...
According to caniuse the :nth-child(1 of .foo) extension has already been implemented on Safari 9.1+ . (I haven't checked though)
– Danield
Sep 14 '16 at 6:25
...