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Which regular expression operator means 'Don't' match this character?
...se negated character classes to exclude certain characters: for example [^abcde] will match anything but a,b,c,d,e characters.
Instead of specifying all the characters literally, you can use shorthands inside character classes: [\w] (lowercase) will match any "word character" (letter, numbers and u...
Javascript how to split newline
I'm using jquery, and I have a textarea. When I submit by my button I will alert each text separated by newline.
How to split my text when there is a newline?
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Pass parameters in setInterval function
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tvanfossontvanfosson
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assertEquals vs. assertEqual in python
Is there a difference between assertEquals and assertEqual in the python unittest.TestCase ?
7 Answers
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How can I remove all objects but one from the workspace in R?
I have a workspace with lots of objects and I would like to remove all but one. Ideally I would like to avoid having to type rm(obj.1, obj.2... obj.n) . Is it possible to indicate remove all objects but these ones ?
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Cluster analysis in R: determine the optimal number of clusters
Being a newbie in R, I'm not very sure how to choose the best number of clusters to do a k-means analysis. After plotting a subset of below data, how many clusters will be appropriate? How can I perform cluster dendro analysis?
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How to make a great R reproducible example
When discussing performance with colleagues, teaching, sending a bug report or searching for guidance on mailing lists and here on Stack Overflow, a reproducible example is often asked and always helpful.
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Determine the path of the executing BASH script [duplicate]
...of Windows' %~dp0):
MY_PATH="`dirname \"$0\"`"
echo "$MY_PATH"
For the absolute, normalized path:
MY_PATH="`dirname \"$0\"`" # relative
MY_PATH="`( cd \"$MY_PATH\" && pwd )`" # absolutized and normalized
if [ -z "$MY_PATH" ] ; then
# error; for some reason, the path is no...
How do I reset a sequence in Oracle?
... Oracle guru Tom Kyte. Great discussion on the pros and cons in the links below too.
tkyte@TKYTE901.US.ORACLE.COM>
create or replace
procedure reset_seq( p_seq_name in varchar2 )
is
l_val number;
begin
execute immediate
'select ' || p_seq_name || '.nextval from dual' INTO l_val;
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Close file without quitting VIM application?
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This deletes the buffer (which translates to close the file)
:bd
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