大约有 45,000 项符合查询结果（耗时：0.0398秒） [XML]
Is it possible to make a type only movable and not copyable?
...owing pointers, e.g. if you have (&usize, u64), it is 16 bytes on a 64-bit computer, and a shallow copy would be taking those 16 bytes and replicating their value in some other 16-byte chunk of memory, without touching the usize at the other end of the &. That is, it's equivalent to calling ...
Difference between numpy.array shape (R, 1) and (R,)
...bers and list of lists where all list contains only a number" but that's a bit of an unhelpful way to think about it.
The best way to think about NumPy arrays is that they consist of two parts, a data buffer which is just a block of raw elements, and a view which describes how to interpret the data...
Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
...ormation:
for blink browsers slice() is the fastest method, concat() is a bit slower, and while loop is 2.4x slower.
for other browsers while loop is the fastest method, since those browsers don't have internal optimizations for slice and concat.
This remains true in Jul 2016.
Below are simple s...
How to pass table value parameters to stored procedure from .net code
...
Maybe a bit pedantic, but I'd use IEnumerable instead of List in the signature, that way you can pass anything that is IEnumerable, not just lists, Since you're not using any function specific to List, I don't really see a reason not...
What is :: (double colon) in Python when subscripting sequences?
...
10 Answers
10
Active
...
Getting the path of the home directory in C#?
... returns the My Documents folder. The safest way to get the home folder on Win32 is to read %HOMEDRIVE%%HOMEPATH%. Reading environment variables is actually very portable to do (across Unix and Windows), so I'm not sure why the poster wanted to not do it.
Edited to add: For crossplatform (Windows/U...
What is the tilde (~) in the enum definition?
...
~ is the unary one's complement operator -- it flips the bits of its operand.
~0 = 0xFFFFFFFF = -1
in two's complement arithmetic, ~x == -x-1
the ~ operator can be found in pretty much any language that borrowed syntax from C, including Objective-C/C++/C#/Java/Javascript.
...
Can I change the checkbox size using CSS?
...
-o-transform: scale(2); /* Opera */
transform: scale(2);
padding: 10px;
}
/* Might want to wrap a span around your checkbox text */
.checkboxtext
{
/* Checkbox text */
font-size: 110%;
display: inline;
}
<input type="checkbox" name="optiona" id="opta" checked />
<...
Maven Install on Mac OS X
...
OS X prior to Mavericks (10.9) actually comes with Maven 3 built in.
If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it.
Assuming qualifications are met, run mvn -version ...
How to export/import PuTTy sessions list?
...
Second Command worked for me on Windows 7, however, I needed to run CMD as administrator.
– The Humble Rat
Oct 16 '15 at 7:36
...