大约有 5,476 项符合查询结果（耗时：0.0303秒） [XML]
Why does Python print unicode characters when the default encoding is ASCII?
... compatible in that range.
e.g. Unicode code point for 'B' is '0x42' or 0100 0010 in binary (as we said, it's the same in ASCII). After encoding in UTF-8 it becomes:
0xxx xxxx <-- UTF-8 encoding for Unicode code points 0 to 127
*100 0010 <-- Unicode code point 0x42
0100 0010 <-- UTF-8...
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
... == '__main__':
import copy
from time import time
num_times = 100000
L = [None, 'blah', 1, 543.4532,
['foo'], ('bar',), {'blah': 'blah'},
old_class(), new_class()]
t = time()
for i in xrange(num_times):
Copy(L)
print 'Custom Copy:', time()-t
...
How to access property of anonymous type in C#?
...u access its properties (they are usually created via new { @style="width: 100px", ... })?
For this slightly different scenario I want to share with you what I found out.
In the solutions below, I am assuming the following declaration for nodes:
List<object> nodes = new List<object>()...
std::vector performance regression when enabling C++11
... 0 CPU-migrations # 0.003 K/sec ( +-100.00% )
19,801 page-faults # 0.558 M/sec ( +- 0.00% )
98,463,570 cycles # 2.773 GHz ( +- 1.09% ) [77.71%]
50,079,9...
ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
...hat the allocation itself can be significantly slower (even by a factor of 100x).
Sources:
Why the odd performance curve differential between ByteBuffer.allocate() and ByteBuffer.allocateDirect()
ByteBuffer.allocateDirect ridiculously slow
When to use Array, Buffer or direct Buffer
...
Equation (expression) parser with precedence?
...s been reorganized. The whole parser is under 5k of Javascript code (about 100 lines for the parser, 15 lines for a wrapper function) including error reporting, and comments.
You can find a live demo at http://users.telenet.be/bartl/expressionParser/expressionParser.html.
// operator table
var ops...
Bootstrap carousel multiple frames at once
...arousel-item {
position: relative;
transform: translate3d(-100%, 0, 0);
visibility: visible;
}
/* farthest right hidden item must be abso position for animations */
.carousel-inner .carousel-item-prev.carousel-item-right {
position: absolute;
top:...
Inheriting class methods from modules / mixins in Ruby
... clarity and for extending my undestanding of Ruby. If I could gift this a 100pt bonus I would!
– Peter Nixey
Apr 29 at 8:44
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How to get UTF-8 working in Java webapps?
...xSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true"
compression="on"
compressionMinSize="128"
noCompressionUserAgents="gozilla, traviata"
compressableMimeType="text/html,text/xml,text/plain,text/css,text/ java...
Are there good reasons not to use an ORM? [closed]
...e to your TCO. For a first approximation, 98% portable is just as good as 100% portable, and far better than convoluted or poorly performing solutions to work around the limits of an ORM.
I have seen the former approach work well on a very large (100's of staff-years) J2EE project.
Where an ORM m...