大约有 16,000 项符合查询结果(耗时:0.0226秒) [XML]
Difference between numpy.array shape (R, 1) and (R,)
...r which is just a block of raw elements, and a view which describes how to interpret the data buffer.
For example, if we create an array of 12 integers:
>>> a = numpy.arange(12)
>>> a
array([ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11])
Then a consists of a data buffer, arra...
First-time database design: am I overengineering? [closed]
... who is approaching a problem like this for the first time. I think the pointers from others on this question thus far pretty much cover it. Good job!
2 & 3) The performance hit you will take will largely be dependent on having and optimizing the right indexes for your particular queries / pro...
What are the differences between type() and isinstance()?
...e. The concept is obviously a growing one in Python, since PEP 3119, which introduces a generalization of it, was accepted and has been implemented starting with Python 2.6 and 3.0.
The PEP makes it clear that, while ABCs can often substitute for duck typing, there is generally no big pressure to d...
How do I get a background location update every n minutes in my iOS application?
... time) if you just stop and start the location manager? is it some sort of intended functionality? it sounds more like a bug in Apple SDK if it happens like that. Which iOS version you were trying it on?
– saurabh
Jan 3 '12 at 6:14
...
Change / Add syntax highlighting for a language in Sublime 2/3
...e of the defaults like Monokai or Solarized.
I should note that I used @int3h's Better JavaScript language definition for this image instead of the one that ships with Sublime. It can be installed via Package Control.
UPDATE
Of late I've discovered another JavaScript replacement language defini...
Purpose of memory alignment
...mory that looks like this:
struct mystruct {
char c; // one byte
int i; // four bytes
short s; // two bytes
}
On a 32-bit processor it would most likely be aligned like shown here:
The processor can read each of these members in one transaction.
Say you had a packed version of ...
Visual Studio support for new C / C++ standards?
...y question as to why we haven’t implemented C99. It’s really based on interest from our users. Where we’ve received many requests for certain C99 features, we’ve tried to implement them (or analogues). A couple examples are variadic macros, long long, __pragma, __FUNCTION__, and __restric...
How to find the lowest common ancestor of two nodes in any binary tree?
...) time complexity algorithm is the best you can do if you have no parent pointers.) For a simple recursive version of that algorithm see the code in Kinding's post which runs in O(n) time.
But keep in mind that if your nodes have parent pointers, an improved algorithm is possible. For both nodes in...
What's the UIScrollView contentInset property for?
...the problem of having content that goes underneath other parts of the User Interface and yet still remains reachable using scroll bars. In other words, the purpose of the Content Inset is to make the interaction area smaller than its actual area.
Consider the case where we have three logical areas...
How do I print the type of a variable in Rust?
...32.90;
| ^^^^^ expected (), found floating-point number
|
= note: expected type `()`
found type `{float}`
Or call an invalid method:
let mut my_number = 32.90;
my_number.what_is_this();
error[E0599]: no method named `what_is_this` found for type `{...
