大约有 47,000 项符合查询结果（耗时：0.0839秒） [XML]
Detect if a NumPy array contains at least one non-numeric value?
...ny()
Edit: 30x faster:
import timeit
s = 'import numpy;a = numpy.arange(10000.).reshape((100,100));a[10,10]=numpy.nan'
ms = [
'numpy.isnan(a).any()',
'any(numpy.isnan(x) for x in a.flatten())']
for m in ms:
print " %.2f s" % timeit.Timer(m, s).timeit(1000), m
Results:
0.11 s num...
What is the fastest substring search algorithm?
...ters, and long as under 1k. For the haystack, I think of short as under 2^10, medium as under a 2^20, and long as up to a 2^30 characters.
share
|
improve this answer
|
foll...
How can I limit a “Run Script” build phase to my release configuration?
...
answered Aug 31 '10 at 23:55
Jason CocoJason Coco
75.8k2020 gold badges179179 silver badges178178 bronze badges
...
'Contains()' workaround using Linq to Entities?
...
10 Answers
10
Active
...
How can I output UTF-8 from Perl?
...the "utf8" pragma, and I'm getting unexpected results. I'm using Mac OS X 10.5 (Leopard), and I'm editing with TextMate. All of my settings for both my editor and operating system are defaulted to writing files in utf-8 format.
...
Is there a C# type for representing an integer Range?
...
10 Answers
10
Active
...
Is it considered bad practice to perform HTTP POST without entity body?
...
answered Nov 17 '10 at 19:35
Darrel MillerDarrel Miller
126k2828 gold badges179179 silver badges234234 bronze badges
...
Vim: How to insert in visual block mode?
...
210
Try this
After selecting a block of text, press Shift+i or capital I.
Lowercase i will not work...
How to develop a soft keyboard for Android? [closed]
...
answered Aug 13 '10 at 21:24
MacarseMacarse
85.2k4242 gold badges167167 silver badges228228 bronze badges
...
What to add for the update portion in ConcurrentDictionary AddOrUpdate
...haks
– Zapnologica
Nov 20 '14 at 11:10
2
Good answer. Just from the signature of the AddOrUpdate(...