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Number of processors/cores in command line
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Make sure to nproc --all for all installed Processing Units. Without --all, nproc only shows Processing Units available to the current process. Read the man page for more details. MMV.
– JamesThomasMoon1979
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How to revert a Git Submodule pointer to the commit stored in the containing repository?
...es, i.e. clone missing submodules and
checkout the commit specified in the index of the containing
repository. This will make the submodules HEAD be detached unless
--rebase or --merge is specified or the key submodule.$name.update
is set to rebase or merge.
Run this and all should be well:
git sub...
Ruby on Rails: Delete multiple hash keys
...re unaware of the Hash#except method ActiveSupport adds to Hash.
It would allow your code to be simplified to:
redirect_to my_path(params.except(:controller, :action, :other_key))
Also, you wouldn't have to monkey patch, since the Rails team did it for you!
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Eclipse executable launcher error: Unable to locate companion shared library
I had Eclipse Indigo installed on my computer with the Android plugin and it was working perfectly for about two weeks. Today, I updated java and quicktime then restarted my computer. When it booted back up, eclipse had completely vanished - all the program files have completely disappeared. When I ...
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
Is there a way to call a block with a primitive parameter after a delay, like using performSelector:withObject:afterDelay: but with an argument like int / double / float ?
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Can Selenium Webdriver open browser windows silently in background?
...um RC?
You can 'supposedly', pass in some parameters into Chrome, specifically: --no-startup-window
Note that for some browsers, especially IE, it will hurt your tests to not have it run in focus.
You can also hack about a bit with AutoIT, to hide the window once it's opened.
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Keyboard shortcuts in WPF
I know about using _ instead of & , but I'm looking at all the Ctrl + type shortcuts.
10 Answers
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Optimistic vs. Pessimistic locking
...revert all current pending changes which might involve both table rows and index records.
For this reason, pessimistic locking might be ore suitable when conflicts happen frequently, as it reduces the chance of rolling back transactions.
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Code Golf - π day
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Yeah, the ( operator alone allowed to shed 6 strokes!
– Dan Andreatta
Mar 18 '10 at 10:25
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In Vim is there a way to delete without putting text in the register?
...yboard layout I have to type "<space>_d. The space is needed to actually type the ".
– Sebastián Grignoli
Mar 12 '12 at 0:01
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