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How does the socket API accept() function work?
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Your confusion lies in thinking that a socket is identified by Server IP : Server Port. When in actuality, sockets are uniquely identified by a quartet of information:
Client IP : Client Port and Server IP : Server Port
So while the Server IP and Server Port are constant...
What is the difference between encode/decode?
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@hop: yes. To detect invalid input and for Python 2/3 compatibility, the string can be encoded explicitly using ascii encoding: \\u0203\u00e4'.encode('ascii').decode('unicode-escape')
– jfs
Jun 30 '15 at 18:39
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How can I programmatically get the MAC address of an iphone
...s MAC: %s IP: %s\n", if_names[i], hw_addrs[i], ip_names[i]);
//decided what adapter you want details for
if (strncmp(if_names[i], "en", 2) == 0)
{
NSLog(@"Adapter en has a IP of %s", ip_names[i]);
}
}
Adapter names vary depending on the simulator/device as well as wifi...
What does the tilde before a function name mean in C#?
...by the user of the class. Finalize (destructor) are called by the GC.
The IDisposable interface tells the world that your class holds onto resources that need to be disposed and provides users a way to release them. If you do need to implement a finalizer in your class, your Dispose method should u...
class method generates “TypeError: … got multiple values for keyword argument …”
...if your function def includes self as the first parameter, and then you accidentally call the function also with self as the first parameter.
– Christopher Hunter
Aug 12 '19 at 20:10
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What is the purpose of AsQueryable()?
...ust use AsQueryable on all enumerables to use them. This allows you to avoid writing two separate versions of very generalized helper methods.
It allows you to change the compile time type of a queryable to be an IQueryable, rather than some more derived type. In effect; you'd use it on an IQuerya...
What does -fPIC mean when building a shared library?
...has something to do with resolving addresses and independence between individual modules, but I'm not sure what it really means. Can you explain?
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font-style: italic vs oblique in CSS
...s... some fonts were meant not to be italicized or obliqued... but people did anyway. And as you may know, some operating systems will, upon clicking the 'italic' icon, skew the font and create an oblique on the fly. Not a pleasant sight.
It's best to specify an italic only when you're sure that fo...
Django - what is the difference between render(), render_to_response() and direct_to_template()?
...ntext and all its context_processors.
But direct_to_template should be avoided as function based generic views are deprecated. Either use render or an actual class, see https://docs.djangoproject.com/en/1.3/topics/generic-views-migration/
I'm happy I haven't typed RequestContext in a long, long ti...
How does Bluebird's util.toFastProperties function make an object's properties “fast”?
...ination
}
Sans one or two small optimizations - all the below is still valid.
Let's first discuss what it does and why that's faster and then why it works.
What it does
The V8 engine uses two object representations:
Dictionary mode - in which object are stored as key - value maps as a hash map.
Fa...