大约有 5,000 项符合查询结果(耗时:0.0280秒) [XML]
How do you convert epoch time in C#?
...someone is using. Seconds used to be good enough, and gave us a reasonable range either side of The Epoch in signed 32-bit values. (And is why just after 3:14 a.m. on Jan 19th, 2038 GMT might be a bad time for some...) Using milliseconds is a more modern practice thanks to our routinely being able t...
Is there a wikipedia API just for retrieve content summary?
...d's popular programming blog.\nIt features questions and answers on a wide range of topics in computer programming. The website serves as a platform for users to ask and answer questions, and, through membership and active participation, to vote questions and answers up or down and edit questions an...
How to stop a goroutine
...routine is more idiomatically written using defer to call wg.Done(), and a range ch loop to iterate over all values until the channel is closed.
– Alan Donovan
Jul 16 '15 at 13:53
...
Are lists thread-safe?
...rs will get the error quickly
count = 1000
l = []
def add():
for i in range(count):
l.append(i)
time.sleep(0.0001)
def remove():
for i in range(count):
l.remove(i)
time.sleep(0.0001)
t1 = threading.Thread(target=add)
t2 = threading.Thread(target=remove)
t1...
How can I analyze Python code to identify problematic areas?
...install it: pip install radon)
Additionally it also has these features:
raw metrics (these include SLOC, comment lines, blank lines, &c.)
Halstead metrics (all of them)
Maintainability Index (the one used in Visual Studio)
...
A weighted version of random.choice
...
Arrange the weights into a
cumulative distribution.
Use random.random() to pick a random
float 0.0 <= x < total.
Search the
distribution using bisect.bisect as
shown in the example at http://docs.python.org/dev/library/b...
Getting number of elements in an iterator in Python
...No. It's not possible.
Example:
import random
def gen(n):
for i in xrange(n):
if random.randint(0, 1) == 0:
yield i
iterator = gen(10)
Length of iterator is unknown until you iterate through it.
...
Can a Byte[] Array be written to a file in C#?
... Writer = new BinaryWriter(File.OpenWrite(Name));
// Writer raw data
Writer.Write(Data);
Writer.Flush();
Writer.Close();
}
catch
{
//...
return false;
}
return true;
}
Edit: Oops, forgot the finally part.....
What is the difference between UTF-8 and Unicode?
...the dominant language in computing at the time, i.e. English, into numbers ranging from 0 to 127 (7 bits). With 26 letters in the alphabet, both in capital and non-capital form, numbers and punctuation signs, that worked pretty well. ASCII got extended by an 8th bit for other, non-English languages,...
How to take column-slices of dataframe in pandas
...
Careful that ranges in pandas include both end points, ie >>>data.ix[:, 'a':'c'] a b c 0 0.859192 0.881433 0.843624 1 0.744979 0.427986 0.177159
– grasshopper
...