大约有 8,200 项符合查询结果（耗时：0.0164秒） [XML]
Fastest way to replace NAs in a large data.table
...rror: cannot allocate vector of size 305.2 Mb
Timing stopped at: 14.541 7.764 68.285
system.time(f_dowle(dt1))
user system elapsed
7.452 4.144 19.590 # EDIT has faster than this
identical(a_gdata, dt1)
[1] TRUE
Note that f_dowle updated dt1 by reference. If a local copy is requir...
Accessing Session Using ASP.NET Web API
...ple I'm referring to, code.msdn.microsoft.com/ASPNET-Web-API-JavaScript-d0d64dd7 . It uses the new REST based Web API implements Forms Authentication.
– Mark
Mar 7 '12 at 1:24
4
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Flex-box: Align last row to grid
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64
@DanAndreasson There are two issues, it does not start from the left (like space-between), and also the space between the items of the last...
LISTAGG in Oracle to return distinct values
... t15
This is Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production.
I was unable to use STRAGG because there is no way to DISTINCT and ORDER.
Performance scales linearly, which is good, since I am adding all columns of interest. The above took 3 seconds for 77K rows. For jus...
Algorithm to return all combinations of k elements from n
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64
Lets say your array of letters looks like this: "ABCDEFGH". You have three indices (i, j, k) in...
Finding quaternion representing the rotation from one vector to another
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64
Half-Way Vector Solution
I came up with the solution that I believe Imbrondir was trying to pr...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
...xx: 7273 :
0.4xxx: 5643 :
0.5xxx: 4608 :
0.6xxx: 3907 :
0.7xxx: 3350 : ...
Soft wrap at 80 characters in Vim in window of arbitrary width
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Brian CarperBrian Carper
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How can I save my secret keys and password securely in my version control system?
...r less hex characters
PASS_FIXED=<your-passphrase>
openssl enc -base64 -aes-256-ecb -S $SALT_FIXED -k $PASS_FIXED
Similar for smudge_filter_open_ssl and diff_filter_oepnssl. See Gist.
Your repo with sensitive information should have a .gitattribute file (unencrypted and included in repo) w...
What are the differences between json and simplejson Python modules?
...implejson(SIMPLE_DATA)
And the results on my system (Python 2.7.4, Linux 64-bit):
Complex real world data:
json dumps 1.56666707993 seconds
simplejson dumps 2.25638604164 seconds
json loads 2.71256899834 seconds
simplejson loads 1.29233884811 seconds
Simple data:
...