大约有 11,643 项符合查询结果（耗时：0.0240秒） [XML]
RESTful API methods; HEAD & OPTIONS
...d that the response format is the same as other responses? (eg; JSON, XML, etc.)
– Dan Lugg
Jul 12 '11 at 6:08
...
How can the Euclidean distance be calculated with NumPy?
... b)))
move along. But if you're comparing distances, doing range checks, etc., I'd like to add some useful performance observations.
Let’s take two cases: sorting by distance or culling a list to items that meet a range constraint.
# Ultra naive implementations. Hold onto your hat.
def sort_t...
Weak and strong property setter attributes in Objective-C
...or a particular file. If its on you cannot use retain release autorelease etc... Instead you use strong weak for properties or __strong
__weak
for variables (defaults to __strong). Strong is the equivalent to retain, however ARC will manage the release for you.
The only time you would want to u...
When is a language considered a scripting language? [closed]
...
So you think php, python, etc are scripting languages?
– Sietse
Sep 19 '08 at 11:45
...
I want to get the type of a variable at runtime
...ant to convert the type into a value, so you can store it, pass it around, etc. This involves reflection, and you'll be using either ClassTag or a TypeTag. For example:
val x: Any = 5
import scala.reflect.ClassTag
def f[T](v: T)(implicit ev: ClassTag[T]) = ev.toString
f(x) // returns the string "An...
When should I use a List vs a LinkedList
...fine.
List<T> also offers a lot of support methods - Find, ToArray, etc; however, these are also available for LinkedList<T> with .NET 3.5/C# 3.0 via extension methods - so that is less of a factor.
share
...
deciding among subprocess, multiprocessing, and thread in Python?
...multiprocessing model gives each process its own memory, file descriptors, etc. A crash or unhandled exception in any one of them will only kill that resource and robustly handling the disappearance of a child or sibling process can be considerably easier than debugging, isolating and fixing or wor...
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
...in-kazan.ru.
All messages are loaded with an AJAX request. My goal is to fetch these messages with all their attributes (author, date, ...):
When I analyze the source code of the page I can't see all these messages because the web page uses AJAX technology. But I can with Firebug from Mozilla Fi...
Why was the arguments.callee.caller property deprecated in JavaScript?
...le in the general case (you can achieve it in select cases through tracing etc, but even the best code is sub optimal due to checks that would not otherwise be necessary). The other major issue is that the recursive call will get a different this value, for example:
var global = this;
var sillyFun...
What do the terms “CPU bound” and “I/O bound” mean?
...cked by I/O, or input/output, such as reading or writing to disk, network, etc.
In general, when optimizing computer programs, one tries to seek out the bottleneck and eliminate it. Knowing that your program is CPU bound helps, so that one doesn't unnecessarily optimize something else.
[And by "b...