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Is there any way to delete local commits in Mercurial?
...y conflicts, test, and then push.
The strip command is useful when you really want to get rid of changesets that pollute the branch. In fact, if you're in this question's situation and you want to completely remove all "draft" change sets permanently, check out the top answer, which basically sugg...
What is the difference between Modal and Push segue in Storyboards?
...visual indication:
A modal Segue is just one VC presenting another VC modally. The VCs don't have to be part of a navigation controller and the VC being presented modally is generally considered to be a "child" of the presenting (parent) VC. The modally presented VC is usually sans any navigatio...
When should I use a composite index?
...olumn_A )
But it will not (at least not directly, maybe it can help partially if there are no better indices) help for queries that need
index( column_A, column_C )
Notice how column_B is missing.
In your original example, a composite index for two dimensions will mostly benefit queries that q...
Event on a disabled input
... However, Firefox doesn't exhibit this behaviour, it just does nothing at all when you click on a disabled element.
I can't think of a better solution but, for complete cross browser compatibility, you could place an element in front of the disabled input and catch the click on that element. Here...
How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
...(a1.length, *a2)
or append and flatten:
(a1 << a2).flatten! # a call to #flatten instead would return a new array
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How should I use git diff for long lines?
...nment variable. If you don't mind about paging (for example, your terminal allows you to scroll back) you might try explicitly setting GIT_PAGER to empty to stop it using a pager. Under Linux:
$ GIT_PAGER='' git diff
Without a pager, the lines will wrap.
If your terminal doesn't support coloured...
insert vs emplace vs operator[] in c++ map
...ing value_type or make_pair . While there is a lot of information about all of them and questions about particular cases, I still can't understand the big picture.
So, my two questions are:
...
How do I tell if a regular file does not exist in Bash?
... The unary operator -z tests for a null string, while -n or no operator at all returns True if a string is not empty. ~ ibm.com/developerworks/library/l-bash-test/index.html
– BlueCacti
May 5 '14 at 11:06
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Style input element to fill remaining width of its container
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Would this work with IE6? Otherwise I may have to actually define a little table for this :(
– Joel Coehoorn
Apr 21 '09 at 16:49
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Sort a list of tuples by 2nd item (integer value) [duplicate]
... optimization, see jamylak's response using itemgetter(1), which is essentially a faster version of lambda x: x[1].
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