sds

sds has asked 113 questions and find answers to 249 problems.

Stats

About

Math, Data Science, History...

sds questions

enableJIT in Rprofile leads to 'not a proper evaluation environment' on startup
R: running out of memory using `strsplit`
R: scan vectors once instead of 4 times?
how to avoid an optimization warning in data.table
Summarize a data.table across multiple columns
Unpack only the first few columns from the CSV reader?
Mean of list of coumns by group [duplicate]
Regular expression which matches at least two words from a list
Why is tz-naive Timestamp converted to integer while tz-aware is kept as Timestamp?
Default values for missing fields in a left join?

sds answers

Test if array is inside a list in lisp
"On Lisp": `(a b c) vs '(a b c) vs (list 'a 'b 'c)
extracting a n element from a list with dolist on lisp
controlling the level of verbosity in Hive
Function for permanently watching the system clipboard
Concatenate Lists and Return Result into First Argument
Rotating a rectangle and calculating the extra space it needs after rotation
Perl - can't flush STDOUT or STDERR
How can I see the error from a Perl system command?
Emacs - noninteractive call to shell-command-on-region always deletes region?