大约有 650 项符合查询结果（耗时：0.0172秒） [XML]
John Carmack's Unusual Fast Inverse Square Root (Quake III)
...:
y = f(x)
can be exactly transformed into:
y = a0 + a1*x + a2*(x^2) + a3*(x^3) + a4*(x^4) + ...
Where a0, a1, a2,... are constants. The problem is that for many functions, like square root, for exact value this sum has infinite number of members, it does not end at some x^n. But, if we stop a...
Is there a difference between copy initialization and direct initialization?
...t)
A a2(2); // OK: direct-initialization selects A::A(int)
A a3 {4, 5}; // OK: direct-list-initialization selects A::A(int, int)
A a4 = {4, 5}; // OK: copy-list-initialization selects A::A(int, int)
A a5 = (A)1; // OK: explicit cast performs static_cast
// B b1 = 1; ...
Which characters make a URL invalid?
...racket characters are reserved for URLs in this format: http://[2001:db8:85a3::8a2e:370:7334]/foo/bar (i.e. an IPv6 literal instead of a host name)
It's worth reading RFC 3986 carefully if you want to understand the issue fully.
...
Programmatically Lighten or Darken a hex color (or rgb, and blend colors)
...ts and accepts standard Hex colors in the form of strings. For example: "#AA6622" or "#bb551144".
Auto-detects and accepts standard RGB colors in the form of strings. For example: "rgb(123,45,76)" or "rgba(45,15,74,0.45)".
Shades colors to white or black by percentage.
Blends colors together by perc...
ASP.NET_SessionId + OWIN Cookies do not send to browser
...
System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
OWIN uses it's own abstraction to work with response Cookies (Microsoft.Owin.ResponseCookieCollection). This implementation directly wraps response headers collection and accordingly updates Set-Cookie header. OWIN ASP....
Difference between and
...ng output:
creating bean B: com.xxx.B@5e5a50
creating bean C: com.xxx.C@54a328
creating bean A: com.yyy.A@a3d4cf
OK, this is wrong! What happened? Why aren't my properties autowired?
Well, annotations are a nice feature but by themselves they do nothing whatsoever. They just annotate stuff. You ...
How to correctly close a feature branch in Mercurial?
...: 2:0a834fa43688
| | summary: merge
| |
| | o changeset: 5:013a3e954cfd
| |/ summary: Closed branch feature-x
| |
| o changeset: 4:31b6f976956b
| | summary: Changeset2
| |
| o changeset: 3:5cb34be9e777
| | parent: 1:1cc843e7f4b5
| | summary: Changeset 1
| |
o...
Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...9bb2d1d6434b8b29ae775ad8c2e48c5391
empty_blob sha256:473a0f4c3be8a93681a267e3b1e9a7dcda1185436fe141f7749120a303721813
empty_tree sha1:4b825dc642cb6eb9a060e54bf8d69288fbee4904
empty_tree sha256:6ef19b41225c5369f1c104d45d8d85efa9b057b53b14b4b9b939dd74decc5321
The SHA2 "6ef19b41225c5369f1c104d45d8d8...
Practical usage of setjmp and longjmp in C
... = setjmp(bufferA);
if (r == 0) longjmp(bufferB, 20001);
printf("(A3) r=%d\n",r);
r = setjmp(bufferA);
if (r == 0) longjmp(bufferB, 20002);
printf("(A4) r=%d\n",r);
}
void routineB()
{
int r;
printf("(B1)\n");
r = setjmp(bufferB);
if (r == 0) longjmp(bufferA...
What does Ruby have that Python doesn't, and vice versa?
...k the same (adding them makes one long array, but composing them like this a3 = [ a1, a2 ] gives you an array of arrays).
Objects are strongly and dynamically typed.
Everything is an object, and variables are just references to objects.
Although the keywords are a bit different, exceptions wor...