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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...在的话，获取setsockopt配置
if (!ipc.oif)
ipc.oif = inet->mc_index;
if (!saddr)
saddr = inet->mc_addr;
connected = 0;
} else if (!ipc.oif)
ipc.oif = inet->uc_index;
if (connected) //connect()的时候已经查找过路由
rt = (struct rtable *)sk_dst_check(sk, 0);
...
Expand a random range from 1–5 to 1–7
...dart until you hit a non-zero. That's what this code is doing: the i and j indexes randomly select a location on the dart board, and if we don't get a good result, we keep throwing darts.
Like Adam said, this can run forever in the worst case, but statistically the worst case never happens. :)
...
Algorithm to find top 10 search terms
...ation will be on updating only. And this updating will not be penalized by index.
Hope this entire explanation would help. :)
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Why are C# 3.0 object initializer constructor parentheses optional?
...blic exposure wanted for public education in the form of a SO post that is indexable, searchable, and able to be readily referred to. Shall we instead contact directly in order to choreograph a staged SO post / answer dance? :)
– James Dunne
Sep 7 '10 at 17:53
...
xkcd style graphs in MATLAB
...;
if ~isempty(xTicks)
yOffset = limits(3) - 0.05.*ranges(2);
tickIndex = true(size(xTicks));
if ismember('left', xkcdOptions)
tickIndex(1) = false;
xkcd_arrow('left', [limits(1) + 0.02.*ranges(1) xTicks(1)], ...
yOffset, xColor);
end
if ismember('ri...
What is Ember RunLoop and how does it work?
...ion of the run loop: https://machty.s3.amazonaws.com/ember-run-loop-visual/index.html
Update 5/9/2013: all the basic concepts below are still up to date, but as of this commit, the Ember Run Loop implementation has been split off into a separate library called backburner.js, with some very minor AP...
AngularJS: Understanding design pattern
... | |-- user-icon.png
| | | | |-- user-default-avatar.png
| |-- index.html
Good example of angular application structuring is implemented by angular-app - https://github.com/angular-app/angular-app/tree/master/client/src
This is also considered by modern application generators - https:...
Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
...associative binary operator"
http://spark.apache.org/docs/1.0.0/api/scala/index.html#org.apache.spark.rdd.RDD
Here is proof that reduce is NOT just a special case of foldLeft
scala> val intParList: ParSeq[Int] = (1 to 100000).map(_ => scala.util.Random.nextInt()).par
scala> timeMany(100...
PHP parse/syntax errors; and how to solve them
...age. Syntax symbols aren't as easy to search for (Stack Overflow itself is indexed by SymbolHound though). Therefore it may take looking through a few more pages before you find something relevant.
Further guides:
PHP Debugging Basics by David Sklar
Fixing PHP Errors by Jason McCreary
PHP Errors ...
Why is it common to put CSRF prevention tokens in cookies?
...truct JQuery to supply a X-CSRF-TOKEN header in each AJAX call.
The main "index" page contains this JavaScript snippet:
// Intialize global variable CSRF_TOKEN to empty sting.
// This variable is set after a succesful login
window.CSRF_TOKEN = '';
// the supplied callback to .ajaxSend() is calle...