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How to count TRUE values in a logical vector
...ystem.time(length(which(z)))
user system elapsed
1.34 0.28 1.64
system.time(table(z)["TRUE"])
user system elapsed
10.62 0.52 11.19
So clearly using sum is the best approach in this case. You may also want to check for NA values as Marek suggested.
Just to add a note r...
Get month name from Date
... David StoreyDavid Storey
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1
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Ubuntu rails install fails on zlib
...n't even work for me ...
So, ..
I'm installing a new box Ubuntu 8.04 LTS 64-bit ...
So, I ...
cd ~
wget ftp://ftp.ruby-lang.org//pub/ruby/1.9/ruby-1.9.2-p180.tar.gz
tar -xvvf ruby-1.9.2-p180.tar.gz
cd ruby-*
./configure
make
install
sudo make install
And then I have this proble...
How do you echo a 4-digit Unicode character in Bash?
... community wiki
7 revs, 5 users 64%vartec
5
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How to get overall CPU usage (e.g. 57%) on Linux [closed]
...o apt-get install sysstat
Linux 3.0.0-13-generic (ws025) 02/10/2012 _x86_64_ (2 CPU)
03:33:26 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle
03:33:26 PM all 2.39 0.04 0.19 0.34 0.00 0.01 0.00 0.00 97.03
Then some cutor grepto pars...
Find a pair of elements from an array whose sum equals a given number
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64
Implementation in Java : Using codaddict's algorithm (Maybe slightly different)
import java.ut...
Copying files from one directory to another in Java
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aliteralmind
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answered Jul 18 '09 at 3:35
Arun P JohnyArun P Johny
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Multi-line regex support in Vim
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Brian CarperBrian Carper
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How to create a CPU spike with a bash command
...ed to EPEL repo for CentOS wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
– Satish
Dec 16 '14 at 17:50
4
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String replacement in java, similar to a velocity template
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casablancacasablanca
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