大约有 37,000 项符合查询结果（耗时：0.0507秒） [XML]
Does Python have a ternary conditional operator?
... instead of a conditional expression.
Keep in mind that it's frowned upon by some Pythonistas for several reasons:
The order of the arguments is different from those of the classic condition ? a : b ternary operator from many other languages (such as C, C++, Go, Perl, Ruby, Java, Javascript, etc.)...
Non-CRUD operations in a RESTful service
...will place a new order. The details (user, car, etc.) should be referenced by id (or URI) inside the contents sent to this address.
It doesn't matter that ordering a car is not just a simple INSERT in the database. Actually, REST is not about exposing your database tables as CRUD operations. From l...
Best way to compare two complex objects
...roperly typed, the IEquatable<T>.Equals method gets called directly, bypassing the overridden Object.Equals method (whose execution would be marginally slower due to the type cast).
When you override Object.Equals, you’re also expected to override Object.GetHashCode; I didn’t do so below ...
Shared-memory objects in multiprocessing
..., be careful not to shoot your own feet.
With the solution I get speedups by a factor of approx 3 on a quad-core i7.
Here's the code:
Feel free to use and improve it, and please report back any bugs.
'''
Created on 14.05.2013
@author: martin
'''
import multiprocessing
import ctypes
import numpy...
ETag vs Header Expires
... changes when the content of the file changes.
The Expires header is used by the client (and proxies/caches) to determine whether or not it even needs to make a request to the server at all. The closer you are to the Expires date, the more likely it is the client (or proxy) will make an HTTP reque...
What does a \ (backslash) do in PHP (5.3+)?
... function called is from the global namespace, even if there is a function by the same name in the current namespace.
share
|
improve this answer
|
follow
|
...
Eclipse add Tomcat 7 blank server name
...mcat v7.0 runtime environment pointing to the wrong folder. This was fixed by going to Window - Preferences - Server - Runtime Environments, clicking on the runtime environment entry and clicking "Edit..." and then modifying the Tomcat installation directory.
...
When are you truly forced to use UUID as part of the design?
...
I wrote the UUID generator/parser for Ruby, so I consider myself to be reasonably well-informed on the subject. There are four major UUID versions:
Version 4 UUIDs are essentially just 16 bytes of randomness pulled from a cryptographically secure random number gen...
How can I add reflection to a C++ application?
...
There are two kinds of reflection swimming around.
Inspection by iterating over members of a type, enumerating its methods and so on.
This is not possible with C++.
Inspection by checking whether a class-type (class, struct, union) has a method or nested type, is derived from another p...
Abandoning changes without deleting from history
...e closed branch if you use the -c option to hg heads, but it won't show up by default and hg merge will know not try to merge with the closed head.
You will need to use hg push --force the first time you push this closed head to another repository since you are actually create additional heads in t...