大约有 3,516 项符合查询结果（耗时：0.0198秒） [XML]
What's the difference between `1L` and `1`?
...and mean!
1e9L * 4L # Ooops, overflow!
...and as @Gavin pointed out, the range for integers is roughly -2e9 to 2e9.
A caveat though is that this applies to the current R version (2.13). R might change this at some point (64-bit integers would be sweet, which could enable vectors of length > 2...
Algorithm to calculate the number of divisors of a given number
... even want to have to look at the prime list. You want to eliminate whole ranges of possibilities as quickly as possible! See my answer for more.
– user11318
Sep 21 '08 at 9:33
...
What are all codecs and formats supported by FFmpeg?
...pported by a specific build/installation of FFmpeg. There are a very wide range of FFmpeg builds in use.
– mikerobi
Oct 5 '11 at 19:02
...
How do you generate dynamic (parameterized) unit tests in python?
..."
Test that numbers between 0 and 5 are all even.
"""
for i in range(0, 6):
with self.subTest(i=i):
self.assertEqual(i % 2, 0)
The output of a test run would be:
======================================================================
FAIL: test_even (__main__.Number...
Numpy index slice without losing dimension information
...nd a few reasonable solutions.
1) use numpy.take(X,[10],0)
2) use this strange indexing X[10:11:, :]
Ideally, this should be the default. I never understood why dimensions are ever dropped. But that's a discussion for numpy...
...
Is effective C++ still effective?
... also contain different examples, e.g., ones making use of auto variables, range-based for loops, in-class default initializers, as well as the occasional variadic template. To the extent that this book falls short in its support for C++0x, the errors are those of omission, not commission.
UPDATE:...
What is the difference between ports 465 and 587?
...g. after SMTP AUTH). It helps to stop outgoing spam when netmasters of DUL ranges can block outgoing connections to SMTP port (port 25).
SSL encryption may be started by STARTTLS command at SMTP level if server supports it and your ISP does not filter server's EHLO reply (reported 2014).
Port 25 ...
Hudson or Teamcity for continuous integration? [closed]
...can configure different rules for different types of builds and for a wide range of notifiers (email, Jabber, windows tray).
– Pavel Sher
Sep 10 '09 at 14:45
6
...
deleting rows in numpy array
...rows from this matrix with 0's only in the 5th column.
indx = []
for i in range(len(ANOVA)):
if int(ANOVA[i,4]) == int(0):
indx.append(i)
ANOVA = [x for x in ANOVA if not x in indx]
share
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Process escape sequences in a string in Python
...tin-1' codec can't encode character '\u0151'
in position 3: ordinal not in range(256)
Adding a regular expression to solve the problem
(Surprisingly, we do not now have two problems.)
What we need to do is only apply the unicode_escape decoder to things that we are certain to be ASCII text. In p...