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How to set the environmental variable LD_LIBRARY_PATH in linux
...le under Ubuntu the right way to do this is to add a custom .conf file to /etc/ld.so.conf.d, for example
sudo gedit /etc/ld.so.conf.d/randomLibs.conf
inside the file you are supposed to write the complete path to the directory that contains all the libraries that you wish to add to the system, fo...
How can I read command line parameters from an R script?
...rgs(TRUE)
Then you can refer to the arguments passed as args[1], args[2] etc.
Then run
Rscript myscript.R arg1 arg2 arg3
If your args are strings with spaces in them, enclose within double quotes.
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Test or check if sheet exists
...ited as existing and doesn't and has a long history - cf perl strict, STAE etc. Upvoted
– Wudang
Oct 18 '11 at 8:37
13
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If a DOM Element is removed, are its listeners also removed from memory?
...t('div');
var b = document.createElement('p');
// Add event listeners to b etc...
a.appendChild(b);
a.removeChild(b);
b = null;
// A reference to 'b' no longer exists
// Therefore the element and any event listeners attached to it are removed.
However; if there are references that still point to...
ActiveRecord: List columns in table from console
...del name:
> User
gives:
User(id: integer, name: string, email: string, etc...)
In rails four, you need to establish a connection first:
irb(main):001:0> User
=> User (call 'User.connection' to establish a connection)
irb(main):002:0> User.connection; nil #call nil to stop repl spitti...
Python Requests throwing SSLError
...on a simple script that involves CAS, jspring security check, redirection, etc. I would like to use Kenneth Reitz's python requests because it's a great piece of work! However, CAS requires getting validated via SSL so I have to get past that step first. I don't know what Python requests is wanti...
Queries vs. Filters
...ually a case that a filter is appropriate. So maybe by age, length, size, etc etc
– Zach
Jan 30 '13 at 20:44
My solut...
What does “O(1) access time” mean?
...To be pedantic, it doesn't mean that the runtime (or number of operations, etc.) is constant. It means that there is a constant such that the runtime (or number of operations, etc.) is bounded above by the constant. There could still be large variance in the runtime: e.g., int main() { int n; cin &g...
How to create PDF files in Python [closed]
...
Note that pypdf only cuts/pastes/etc.. existing pdf content - you can't add text or images to a pdf.
– drevicko
Feb 14 '14 at 11:57
3
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How to use Morgan logger?
...s of: remote ip, request method, http version, response status, user agent etc. It allows you to modify the log using tokens or add color to them by defining 'dev' or even logging out to an output stream, like a file.
For the purpose we thought we can use it, as in this case, we still have to use:
...