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Traverse a list in reverse order in Python
...d the loop index, and don't want to traverse the entire list twice, or use extra memory, I'd write a generator.
def reverse_enum(L):
for index in reversed(xrange(len(L))):
yield index, L[index]
L = ['foo', 'bar', 'bas']
for index, item in reverse_enum(L):
print index, item
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Composer killed while updating
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DigitalOcean fix that does not require extra memory - activating swap, here is an example for 1gb:
in terminal run below
/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
/sbin/mkswap /var/swap.1
sudo /sbin/swapon /var/swap.1
The above solution will work un...
Specifying column name in a “references” migration
...eferences :col_name, references: other_table_name works without installing extra gems.
– Qqwy
Sep 9 '19 at 14:26
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Finding the direction of scrolling in a UIScrollView?
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No need to add an extra variable to keep track of this. Just use the UIScrollView's panGestureRecognizer property like this. Unfortunately, this works only if the velocity isn't 0:
CGFloat yVelocity = [scrollView.panGestureRecognizer velocity...
JavaScript naming conventions [closed]
...ink, I can't believe a "link answer" has so many votes. You could at least extract & format the relevant parts of the linked page.
– Adrien Be
Nov 13 '14 at 9:26
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form_for with nested resources
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Jam's way works, but you can end up with extra routes that you probably don't know about. It's better to be explicit.
– cdunn2001
Jun 28 '14 at 19:13
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Bootstrap trying to load map file. How to disable it? Do I need to do it?
...y when the dev tools are open, so if it's missing, you are not getting any extra failing requests when a typical users go to your page.
– tomf
Aug 6 '15 at 16:57
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TextView.setTextSize behaves abnormally - How to set text size of textview dynamically for different
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Adding some extra flavor for this answer, as also ran into a bit of confusion. You should be able to drop this test into any @RunWith(AndroidJUnit4.class) test you have in your project (you'll also need to add the dimens to your dimens.x...
Modifying a subset of rows in a pandas dataframe
...at replacing 0s with an integer instead of np.nan. I wonder what takes the extra time.
– Alexander
Aug 21 '18 at 13:30
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CSS Cell Margin
...gin does not work unfortunately on individual cells, however you could add extra columns between the two cells you want to put a space between... another option is to use a border with the same colour as the background...
s...