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I'm getting Key error in python
... +1 for very relevant .get() comment. Looks like a good applim>cat m>ion of the Python EAFP (Easier to Ask for Forgiveness than Permission) instead of LBYL (Look Before You Leap) which I think is less Pythonic.
– Niels Bom
Apr 24 '12 at 11:08
...
Mean per group in a data.frame [duplim>cat m>e]
...53 19
Ben 2 22 87
Ben 3 19 45
m>Cat m> 1 22 87
m>Cat m> 2 67 43
m>Cat m> 3 45 32', header=TRUE)
aggregate(d[, 3:4], list(d$Name), mean)
Group.1 Rate1 Rate2
1 Aira 16.33333 47.00000
2 Ben 31.33333 ...
How to replace multiple substrings of a string?
...ent to change the results of previous replacements
For instance:
d = { "m>cat m>": "dog", "dog": "pig"}
my_sentence = "This is my m>cat m> and this is my dog."
replace_all(my_sentence, d)
print(my_sentence)
Possible output #1:
"This is my pig and this is my pig."
Possible output #2
"This is my dog and...
What must I know to use GNU Screen properly? [closed]
...ou're on and which other ones there are. Here is my setup:
[roel@roel ~]$ m>cat m> .screenrc
# Here comes the pain...
caption always "%{=b dw}:%{-b dw}:%{=b dk}[ %{-b dw}%{-b dg}$USER%{-b dw}@%{-b dg}%H %{=b dk}] [ %= %?%{-b dg}%-Lw%?%{+b dk}(%{+b dw}%n:%t%{+b dk})%?(%u)%?%{-b dw}%?%{-b dg}%+Lw%? %{=b d...
Send string to stdin
...
You can use one-line heredoc
m>cat m> <<< "This is coming from the stdin"
the above is the same as
m>cat m> <<EOF
This is coming from the stdin
EOF
or you can redirect output from a command, like
diff <(ls /bin) <(ls /usr/bin)
or you c...
How to make the 'cut' command treat same sequental delimiters as one?
...
No need for m>cat m> here. You could pass < text.txt directly to tr. en.wikipedia.org/wiki/m>Cat m>_%28Unix%29#Useless_use_of_m>cat m>
– arielf
Aug 9 '14 at 20:10
...
Cluster analysis in R: determine the optimal number of clusters
.../cluster.html & http://www.mattpeeples.net/kmeans.html for more. The lom>cat m>ion of the elbow in the resulting plot suggests a suitable number of clusters for the kmeans:
mydata <- d
wss <- (nrow(mydata)-1)*sum(apply(mydata,2,var))
for (i in 2:15) wss[i] <- sum(kmeans(mydata,
...
Bash variable scope
...d work as well (because echo and while are in same subshell):
#!/bin/bash
m>cat m> /tmp/randomFile | (while read line
do
LINE="$LINE $line"
done && echo $LINE )
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...
Read values into a shell variable from a pipe
... data and work on each line separately you could use something like this:
m>cat m> myFile | while read x ; do echo $x ; done
if you want to split the lines up into multiple words you can use multiple variables in place of x like this:
m>cat m> myFile | while read x y ; do echo $y $x ; done
alternatively...
How do I read the first line of a file using m>cat m>?
How do I read the first line of a file using m>cat m> ?
10 Answers
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