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Fastest way to implode an associative array with keys
...
You can use http_build_query() to do that.
Generates a URL-encoded query string from the associative (or indexed) array provided.
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“/usr/bin/ld: cannot find -lz”
...-dev provides libz-dev, which includes the shared library file /usr/lib/x86_64-linux-gnu/libz.a, and the C Header files /usr/include/zconf.h & /usr/include/zlib.h. You can view the package contents with: dpkg -L zlib1g-dev, which shows all the files it contains.
– Trinitro...
Deleting DataFrame row in Pandas based on column value
...If I'm understanding correctly, it should be as simple as:
df = df[df.line_race != 0]
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How to get started on TDD with Ruby on Rails? [closed]
...ink contacts to companies.
class CompanyTest <Test::Unit
def test_relationship # test associations/relationships
c = companies(:some_company)
assert_equal [a list of contacts], c.contacts # make sure a company can have multiple contacts
end
end
class ContactTest<Tes...
ValueError: invalid literal for int() with base 10: ''
...ame)
for line in h:
if line.strip():
[int(next(h).strip()) for _ in range(4)] # list of integers
This way it processes 5 lines at the time. Use h.next() instead of next(h) prior to Python 2.6.
The reason you had ValueError is because int cannot convert an empty string to the integ...
How to merge a transparent png image with another image using PIL
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The secret sauce was tasty
– AFP_555
Apr 15 '18 at 0:06
4
@DenizOzger To fix...
How to sort my paws?
...with the last impact here. It's not too hard to add it, though.)
def group_paws(data_slices, time):
# Sort slices by initial contact time
data_slices.sort(key=lambda s: s[-1].start)
# Get the centroid for each paw impact...
paw_coords = []
for x,y,z in data_slices:
p...
UITableView row animation duration and completion callback
...re to be executed when the animation is completed.
func performUpdate(_ update: ()->Void, completion: (()->Void)?) {
CATransaction.begin()
CATransaction.setCompletionBlock(completion)
// Table View update on row / section
beginUpdates()
update()
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UICollectionView's cellForItemAtIndexPath is not being called
... is the answer solved my problem! The override method func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize { <#code#> } does not work for me.
– Mike
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How would you go about parsing Markdown? [closed]
...de enough to understand why it's being done. A comment in a routine called _EscapeSpecialChars() states:
We're replacing each such character with its corresponding MD5 checksum value;
this is likely overkill, but it should prevent us from colliding with the escape
values by accident.
Repla...