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How to get last items of a list in Python?
...
You can then pass the slice object to your sequence:
>>> list(range(100))[last_nine_slice]
[91, 92, 93, 94, 95, 96, 97, 98, 99]
islice
islice from the itertools module is another possibly performant way to get this. islice doesn't take negative arguments, so ideally your iterable has...
Convert RGB to RGBA over white
...mplatetypedef: Converting te lowest component to alpha is scaling from the range 0..255 to 0..1, and inverting. Using 1.0 - 152 / 255 would also work. Converting the color components is simply scaling from n..255 to 0..255 where n is the lowest component.
– Guffa
...
Looping a video with AVFoundation AVPlayer?
...e duration and
track durations to be same length or you can use the time range
parameter of AVPlayerLooper (set time range from 0 to duration of
audio track)
It turns out that Premiere had been exporting files with an audio track of a slightly different length than the video. In my case it w...
How to automatically generate N “distinct” colors?
...slightly mint green) is imperceptible, while the difference between 30° (orange) and 45° (peach) is quite obvious. You need a non-linear spacing along the hue for best results.
– Phrogz
Feb 21 '12 at 17:05
...
Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
...e array. This includes appending, inserting, or removing items, or using a ranged subscript to replace a range of items in the array.
I agree that this is a bit confusing, but at least there is a clear and simple description of how it works.
That section also includes information on how to make s...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...码要求排序的区间：
binary_search lower_bound
upper_bound equal_range
set_union set_intersection
set_difference set_symmetric_difference
merge inplace_merge
includes
下面的算法并不一定需要排序的区间：
unique unique_copy
第35条：通过mismatch或lexico...
Copy and paste content from one file to another file in vi
...
Use the variations of d like dd to cut.
To write a range of lines to another file you can use:
:<n>,<m> w filename
Where <n> and <m> are numbers (or symbols) that designate a range of lines.
For using the desktop clipboard, take a look at the +g co...
How to find list of possible words from a letter matrix [Boggle Solver]
...e(word))
prefixes = set(word[:i] for word in words
for i in range(2, len(word)+1))
def solve():
for y, row in enumerate(grid):
for x, letter in enumerate(row):
for result in extending(letter, ((x, y),)):
yield result
def extending(prefix, path...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...ng use cases even though we're not yet in 2038?
So a MySQL DATETIME has a range of 1000-9999, but TIMESTAMP only has a range of 1970-2038. If your system stores birthdates, future forward dates (e.g. 30 year mortgages), or similar, you're already going to run into this bug. Again, don't use TIMESTA...
LaTeX source code listing like in professional books
...bitxormatrix(genl1)
M2 = np.triu(bitxormatrix(genl2),1)
for i in range(m-1):
for j in range(i+1, m):
[r,c] = np.where(M2 == M1[i,j])
for k in range(len(r)):
VT[(i)*n + r[k]] = 1;
VT[(i)*n + c[k]] = 1;
VT[(j)*n ...