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How can I remove all objects but one from the workspace in R?
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I think another option is to open workspace in RStudio and then change list to grid at the top right of the environment(image below). Then tick the objects you want to clear and finally click on clear.
sha...
Is Ruby pass by reference or by value?
...inal. That's true for objects too. If you pass an object variable by value then the whole object (including all of its members) get copied and any changes to the members don't change those members on the original object. (It's different if you pass a pointer by value but Ruby doesn't have pointers a...
Returning multiple values from a C++ function
...nctions returning tuples. Say the above function prototype is in a header, then how do I know what does the first and second returned values mean without understanding the function definition ? quotient-remainder or remainder-quotient.
– Uchia Itachi
Nov 4 '16 ...
How to tell git to ignore individual lines, i.e. gitignore for specific lines of code [duplicate]
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I did this for '.py'-files and ut worked. Then I did it again for '.xml'-files. That didn't work, and it also broke the previously working filter for python-files. Now I get this error all the time "error: external filter sed". Do you know how I can fix this or simpl...
Combining CSS Pseudo-elements, “:after” the “:last-child”
...combine these for this reason: the last-child is a modifier on the li, and then after you've selected all li elements that are last children you then select (and implicitly create) a new element before and after each.
– Martin Atkins
Nov 15 '11 at 14:52
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Auto-indent in Notepad++
...install the plugin. Plugins->Plugin Manager->Show Plugin Manager and then check the plugin TextFX Characters. Click 'install,' restart Notepad++.
In version Notepad++ v6.1.3, I resolve with:
Plugin Manager->Show Plugin Manager** and then check the plugin "Indent By Fold"
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How can I get a side-by-side diff when I do “git diff”?
...ld
/usr/bin/meld "$2" "$5"
# using VIM
# /usr/bin/vim -d "$2" "$5"
you then need to make that script executable:
chmod a+x ~/scripts/my_diff.sh
you then need to tell Git how and where to find your custom diff wrapper script.
You have three choices how to do that: (I prefer editing the .gitcon...
How to delete migration files in Rails 3
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Would deleting the migration and then running a db:migrate wipe out the table that was created?
– alvincrespo
Oct 7 '10 at 17:35
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Is it possible to do a sparse checkout without checking out the whole repository first?
...mote" command resulted in the entire repo being checked out - bam! - right then; so the "git config..." and specification of a sub-dir of interest in the following commands had no effect. Is the repo URL specified in the "git remote" command just the path to the top-level .git file? Or should it be...
How to step back in Eclipse debugger?
... Click this and make sure "Use configuration specific settings" is checked then select "GDB (GSF) Create Process Launcher" and click okay. "Using GDB (GSF) Create Process Launcher" will now be displayed at the bottom of the main tab.
– Sammy
Oct 15 '15 at 4:29
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