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What's the best way of implementing a thread-safe Dictionary?
I was able to implement a thread-safe Dictionary in C# by deriving from IDictionary and defining a private SyncRoot object:
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Sorting a Python list by two fields
I have the following list created from a sorted csv
7 Answers
7
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NSUserDefaults removeObjectForKey vs. setObject:nil
...l.
here is how to test if setting key value to nil removed the key entry from NSUserDefaults standardUserDefaults.
NSArray *keys = [[[NSUserDefaults standardUserDefaults] dictionaryRepresentation] allKeys] copy];
for(NSString *key in keys) {
NSLog(@"Key Name: %@", key);
}
[keys release]...
What is the difference between server side cookie and client side cookie?
... example:
GET /index.html HTTP/1.1
Host: www.example.com
Example answer from the server:
HTTP/1.1 200 OK
Content-type: text/html
Set-Cookie: foo=10
Set-Cookie: bar=20; Expires=Fri, 30 Sep 2011 11:48:00 GMT
... rest of the response
Here two cookies foo=10 and bar=20 are stored on the browser. ...
Performance of Java matrix math libraries? [closed]
...d of course write your own native library with those optimisations to call from Java).
So what does all this mean? Well:
in principle, it is worth hunting around for a better-performing library, though unfortunately I can't recomend one
if performance is really critical to you, I would consider j...
Is there a built in function for string natural sort?
...author). For your case, you can do either of the following:
>>> from natsort import natsorted, ns
>>> x = ['Elm11', 'Elm12', 'Elm2', 'elm0', 'elm1', 'elm10', 'elm13', 'elm9']
>>> natsorted(x, key=lambda y: y.lower())
['elm0', 'elm1', 'Elm2', 'elm9', 'elm10', 'Elm11', 'El...
Comma in C/C++ macro
...A nice trick to workaround this is that in C++, you can extract a typename from a parenthesized type name using a function type:
template<typename T> struct argument_type;
template<typename T, typename U> struct argument_type<T(U)> { typedef U type; };
#define FOO(t,name) argument...
TemplateDoesNotExist - Django Error
...
Could also result from not registering a dependency of DRF. In my case I had to add 'django_hstore', to INSTALLED_APPS.
– shacker
Jul 20 '16 at 18:31
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What are some popular naming conventions for Unit Tests? [closed]
...t state is.
Specific about the expected behaviour.
What more do you need from a test name?
Contrary to Ray's answer I don't think the Test prefix is necessary. It's test code, we know that. If you need to do this to identify the code, then you have bigger problems, your test code should not be mi...
What is the standard exception to throw in Java for not supported/implemented operations?
... @JarrodRoberson OK, that statement should really be removed from the class documentation in that case. The exception does seem to be used by other packages. I guess if Oracle does so, then so should we. I'll file a bug report.
– Maarten Bodewes
J...