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Removing list of vms in vagrant cache
...s untouched, though. Meaning one still has to unregister and delete it manually. The very simple thing should be that vagrant does its job properly when given $ vagrant destroy -f <id>
– silverdr
Dec 14 '15 at 16:04
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What is the Comonad typeclass in Haskell?
...Comonad typeclass are also welcome). I've vaguely heard about Comonad, but all I really know about it is that is provides extract :: w a -> a , sort of a parallel to Monad's return :: a -> m a .
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RegEx: Smallest possible match or nongreedy match
How do I tell RegEx (.NET version) to get the smallest valid match instead of the largest?
3 Answers
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git working on two branches simultaneously
...r, with a more robust mechanism where those "linked" working trees are actually recorded in the main repo new $GIT_DIR/worktrees folder (so that work on any OS, including Windows).
Again, once you have cloned a repo (in a folder like /path/to/myrepo), you can add worktrees for different branches in...
How can I copy the output of a command directly into my clipboard?
... down the complete procedure just in case anyone else needs it.
First install a 16 kB program called xclip:
sudo apt-get install xclip
You can then pipe the output into xclip to be copied into the clipboard:
cat file | xclip
To paste the text you just copied, you shall use:
xclip -o
To si...
Strip html from string Ruby on Rails
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Yes, call this: sanitize(html_string, tags:[])
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Difference Between Invoke and DynamicInvoke
...ou just know that it is Delegate, it has to resolve the parameters etc manually - this might involve unboxing, etc - a lot of reflection is going on. For example:
Delegate slowTwice = twice; // this is still the same delegate instance
object[] args = { i };
object result = slowTwice.DynamicInvoke(a...
difference between css height : 100% vs height : auto
...fficiently worded to make it ovbious that the element will grow to include all content, whether it is its own text, or a child's content. Of course it can be argued that its own text is also a child. This provides visual confirmation of the behavior.
– SherylHohman
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Using boolean values in C
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@NoBody Using a smaller type can save on memory, but it might not make it any faster. Often, it's faster to use the processor's native word size instead of a smaller size as it could require the compiler to make bit shifts to align it properly...
jQuery: checking if the value of a field is null (empty)
...ype]').val().length != 0){}
If you want to check if the element exist at all, you should do that before calling val:
var $d = $('#person_data[document_type]');
if ($d.length != 0) {
if ($d.val().length != 0 ) {...}
}
s...