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How can I view the source code for a function?
...y the partial signature
getMethod("extract",signature="SpatialPolygons")
#Error in getMethod("extract", signature = "SpatialPolygons") :
# No method found for function "extract" and signature SpatialPolygons
Functions that call unexported functions
In the case of ts.union, .cbindts and .makeNa...
What is the maximum length of a URL in different browsers?
...) Chrome/43.0.2357.130 Safari/537.36
2046
It then blew up with:
HTTP Error 404.15 - Not Found The request filtering module is
configured to deny a request where the query string is too long.
Same on Internet Explorer 8 and Firefox
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64...
Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
....table, too. The := isn't for doing that. So the following is a deliberate error as := isn't for just binding object names :
DT2 := DT # not what := is for, not defined, gives a nice error
:= is for subassigning by reference. But you don't use it like you would in base :
DT[3,"foo"] := newval...
Detach (move) subdirectory into separate Git repository
... you can't "push" deletes to GitHub and the like. If you try you'll get an error and you'll have to git pull before you can git push - and then you're back to having everything in your history.
So if you want to delete history from the "origin" - meaning to delete it from GitHub, Bitbucket, etc - yo...
What should every developer know about databases? [closed]
...it in both places. That way you're protected against bugs as well as user error. There's no reason to make every column nullable, or to allow values outside the range 1-12 to be inserted into a Month column. Complex business rules are, of course, another story.
– Aaronaught
...
How exactly does CMake work?
...
CMakeFiles directory contains CMakeError.log and CMakeOutput.log important for troubleshooting CMake builds.
– Serge Rogatch
Aug 16 '16 at 18:11
...
Convert the values in a column into row names in an existing data frame
...
> rownames(df)<-df[,1] Error in row.names<-.data.frame(*tmp*, value = value) : invalid 'row.names' length In addition: Warning message: Setting row names on a tibble is deprecated.
– user3673
Jun 18 '17 ...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
... and I've registered the filter, but I just noticed that it's giving me an error when starting the server "SEVERE: WebModule[/EventsCalendary]PWC1270: Exception starting filter PrimeFaces FileUpload Filter" I feel so dumb for not noticing it before. Any tips on solving this error?
...
When would anyone use a union? Is it a remnant from the C-only days?
..."not recommended". In the embedded space it's often much cleaner and less error-prone than the alternatives, which usually either involve lots of explicit casts and void*s or masks and shifts.
– bta
Jan 26 '11 at 2:27
...
Git Symlinks in Windows
...wd)
if [ ! -e "${target_dir}/${source_file_or_dir}" ]; then
printf 'error: git-add-symlink: %s: No such file or directory\n' \
"${target_dir}/${source_file_or_dir}" >&2
printf '(Source MUST be a path relative to the location of target!)\n' >&2
return 2
fi
gi...