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Trimming a huge (3.5 GB) csv file to read into R
...ears.
file_in <- file("in.csv","r")
file_out <- file("out.csv","a")
m>x m> <- readLines(file_in, n=1)
writeLines(m>x m>, file_out) # copy headers
B <- 300000 # depends how large is one pack
while(length(m>x m>)) {
ind <- grep("^[^;]*;[^;]*; 20(09|10)", m>x m>)
if (length(ind)) writeLines(m>x m>[ind]...
Library not loaded: libmysqlclient.16.dylib error when trying to run 'rails server' on OS m>X m> 10.6 wit
...hat link will resolve to the location where it's actually installed. On OS m>X m>, that's usually under /usr/local/mysql/lib, which is where this command links to. If your lib is installed in a different location, you'll need to tweak this command. Type locate libmysqlclient.18.dylib and substitute the ...
Correct way to define C++ namespace methods in .cpp file
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Calling #2 "wrong" is a huge em>x m>aggeration. By this logic, all symbol names are "wrong" because they can potentially hide other symbol names in other scopes.
– tenfour
Dec 30 '11 at 16:59
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Firing a double click event from a WPF ListView item using MVVM
...on can be found here:
WPF Application Framework (WAF) - http://waf.codeplem>x m>.com
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How to write a multidimensional array to a tem>x m>t file?
...perfectly fine).
If you want it to be human readable, look into numpy.savetm>x m>t.
Edit: So, it seems like savetm>x m>t isn't quite as great an option for arrays with >2 dimensions... But just to draw everything out to it's full conclusion:
I just realized that numpy.savetm>x m>t chokes on ndarrays with more ...
Why do we need the “finally” clause in Python?
I am not sure why we need finally in try...em>x m>cept...finally statements. In my opinion, this code block
14 Answers
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How to center a Window in Java?
... can use the simple method
setLocationRelativeTo(null) on the
dialog bom>x m>, frame, or window to center
it.
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Nullable types and the ternary operator: why is `? 10 : null` forbidden? [duplicate]
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The compiler first tries to evaluate the right-hand em>x m>pression:
GetBoolValue() ? 10 : null
The 10 is an int literal (not int?) and null is, well, null. There's no implicit conversion between those two hence the error message.
If you change the right-hand em>x m>pression to one o...
How do I detect whether a Python variable is a function?
I have a variable, m>x m> , and I want to know whether it is pointing to a function or not.
25 Answers
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Why are there no ++ and -- operators in Python?
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It's not because it doesn't make sense; it makes perfect sense to define "m>x m>++" as "m>x m> += 1, evaluating to the previous binding of m>x m>".
If you want to know the original reason, you'll have to either wade through old Python mailing lists or ask somebody who was there (eg. Guido), but it's easy enough ...