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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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Referring to a Column Alias in a WHERE Clause
... Do you happen to know how this fairs efficiency wise? Is there extra overhead using a CTE?
– James
Jul 4 '14 at 9:20
5
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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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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...
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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PHPExcel auto size column width
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Thank you so much. It works. It does not calculate the extra spacing created from the bold font, although that's expected (I've read it somewhere). Could you update your answer to include that too?
– Alkis Kalogeris
May 26 '13 at 17:59
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