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Getting the last element of a list
...f range" - and that's what should happen when attempting to get an element from an empty list. For Strings astr[-1:] could be a valid approach since it returns the same type as astr[-1], but I don't think the ':' helps to deal with empty lists (and the question is about lists). If the idea is to use...
How do I forward parameters to other command in bash script?
... only 2 : ${@:2:1}"
echo "params 2 and 3 : ${@:2:2}"
echo "params all from 2: ${@:2:99}"
echo "params all from 2: ${@:2}"
run it:
$ chmod u+x r.sh
$ ./r.sh 1 2 3 4 5 6 7 8 9 10
the result is:
params only 2 : 2
params 2 and 3 : 2 3
params all from 2: 2 3 4 5 6 7 8 9 10
params all from 2...
How do I make a Mac Terminal pop-up/alert? Applescript?
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Use this command to trigger the notification center notification from the terminal.
osascript -e 'display notification "Lorem ipsum dolor sit amet" with title "Title"'
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Fragment onResume() & onPause() is not called on backstack
... if you to a different child in my FragmentStatePagerAdapter (say you move from child 0 to child 2, note to self, this happens because child 0 is destroyed when child 2 opens)
– Sufian
Aug 28 '15 at 14:17
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Pandas convert dataframe to array of tuples
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@coldspeed The lesson I got from the linked question is that itertuples is slow because converting to tuples is usually slower than vectorized/cython operations. Given that the question is asking to convert to tuples, is there any reason that we'd think...
Extract only right most n letters from a string
...can I extract a substring which is composed of the rightmost six letters from another string ?
21 Answers
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C/C++ macro string concatenation
...ine PPCAT_NX(A, B) A ## B
PPCAT_NX("s", "1")
produces this error message from the preprocessing phase of gcc: error: pasting ""s"" and ""1"" does not give a valid preprocessing token
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However, for general token pasting, try this:
/*
* Concatenate preprocessor tokens A and B without expanding...
iPhone 5 CSS media query
..., that use max-device-width or max-device-height for media queries, suffer from very strong bug: they also target a lot of other popular mobile devices (probably unwanted and never tested, or that will hit the market in future).
This queries will work for any device that has a smaller screen, and ...
submitting a GET form with query string params and hidden params disappear
...is example code exactly as written. It would be very dangerous. The values from GET come from the user, so shouldn't be written to the page without escaping them first.
– drewm
Jun 18 '14 at 9:44
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AngularJS : ng-model binding not updating when changed with jQuery
... This did the trick for me. I was updating the value of a bound input from a directive test and wrapping the .val('something' call in an $apply (or calling $digest afterward) didn't work.
– Tom Seldon
Apr 29 '15 at 11:38
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