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Is R's apply family more than syntactic sugar?
... median uq max neval
f3(mat) 14.87594 15.44183 15.87897 17.93040 19.14975 100
f4(mat) 12.01614 12.19718 12.40003 15.00919 40.59100 100
But for these situations we've got colSums and rowSums:
f5 <- function(x)
colSums(x)
> microbenchmark(f5(mat), times=100)
Unit: millis...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...th d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 ...
Optimizing away a “while(1);” in C++0x
...|
edited Aug 28 '10 at 22:40
answered Aug 28 '10 at 22:01
P...
How to add a local repo and treat it as a remote repo
...th d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 ...
Just what is Java EE really? [closed]
...e back later.
– Gab
Aug 2 '17 at 11:40
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show 3 more comme...
Difference between Repository and Service Layer?
...th d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 ...
How to implement has_many :through relationships with Mongoid and mongodb?
...hysician.appointments.pluck(:patient_id) }
=> #<Benchmark::Tms:0xb6f4054 @label="", @real=0.033517774, @cstime=0.0, @cutime=0.0, @stime=0.0, @utime=0.0, @total=0.0>
I am using just 250 appointments.
Don't forget to add indexes to :patient_id and :physician_id in Appointment document!
I...
What are the best PHP input sanitizing functions?
...se I didn't see anyone mention HTML Purifier, and here you beat me by like 40 minutes. ;)
– Charles
Jun 27 '10 at 2:36
3
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Covariance, Invariance and Contravariance explained in plain English?
...
VadzimVVadzimV
40644 silver badges88 bronze badges
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Java 8: performance of Streams vs Collections
...e: 113373057 ns (0.113373 seconds)
Streams: Elapsed time: 135570440 ns (0.135570 seconds)
Parallel streams: Elapsed time: 104091980 ns (0.104092 seconds)
It's like your results: stream is slower than collection. Conclusion: much time were spent for stream initialization/values trans...