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ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...描述符）去定位具体的拓扑：
/* Topology establishment */
int s = zmq_socket (...);
zmq_connect (s, "tcp://192.168.0.111:5555");
/* Message routing */
const char data [] = "ABC";
zmq_send (s, data, sizeof (data), 0);
区分拓扑建立和消息路由严格地说不是不可...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...描述符）去定位具体的拓扑：
/* Topology establishment */
int s = zmq_socket (...);
zmq_connect (s, "tcp://192.168.0.111:5555");
/* Message routing */
const char data [] = "ABC";
zmq_send (s, data, sizeof (data), 0);
区分拓扑建立和消息路由严格地说不是不可...
How to search a specific value in all tables (PostgreSQL)?
...y --inserts -U postgres your-db-name > a.tmp
$ grep United a.tmp
INSERT INTO countries VALUES ('US', 'United States');
INSERT INTO countries VALUES ('GB', 'United Kingdom');
The same utility, pg_dump, can include column names in the output. Just change --inserts to --column-inserts. That way yo...
When to use ' (or quote) in Lisp?
After making it through the major parts of an introductory Lisp book, I still couldn't understand what the special operator (quote) (or equivalent ' ) function does, yet this has been all over Lisp code that I've seen.
...
ZMQ: 基本原理 - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术
...描述符）去定位具体的拓扑：
/* Topology establishment */
int s = zmq_socket (...);
zmq_connect (s, "tcp://192.168.0.111:5555");
/* Message routing */
const char data [] = "ABC";
zmq_send (s, data, sizeof (data), 0);
区分拓扑建立和消息路由严格地说不是不可...
What exactly do “IB” and “UB” mean?
...ocumented by the compiler writers. An example of this is the result of a reinterpret_cast. usually, it simply changes the type of a pointer, without modifying the address, but the mapping is actually implementation-defined, so a compiler could map to a completely different address, as long as it doc...
What arguments are passed into AsyncTask?
... executed yet.
FINISHED - Indicates that onPostExecute(Z) has finished.
Hints about using AsyncTask
Do not call the methods onPreExecute, doInBackground and onPostExecute manually. This is automatically done by the system.
You cannot call an AsyncTask inside another AsyncTask or Thread. The call...
Do HttpClient and HttpClientHandler have to be disposed between requests?
...ou do not (should not) need to dispose of HttpClient.
Many people who are intimately involved in the way it works have stated this.
See Darrel Miller's blog post and a related SO post: HttpClient crawling results in memory leak for reference.
I'd also strongly suggest that you read the HttpClient...
X-Frame-Options Allow-From multiple domains
...ame-ancestors 'self' example.com *.example.net ;
Unfortunately, for now, Internet Explorer does not fully support Content-Security-Policy.
UPDATE: MDN has removed their deprecation comment. Here's a similar comment from W3C's Content Security Policy Level
The frame-ancestors directive obsole...
When should I really use noexcept?
...bles which map potentially throwing call site addresses to handler entry points. Removing those tables is as close as it gets to removing exception handling completely. The only difference is executable file size. Probably not worth mentioning anything.
– Potatoswatter
...