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Skip List vs. Binary Search Tree
I recently came across the data structure known as a skip list . It seems to have very similar behavior to a binary search tree.
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Start a git commit message with a hashmark (#)
...t if it's already in the prepared message, find another char in a small subset. This should stop surprises because git strips some lines unexpectedly.
Note that git is not smart enough to recognize '#' as the comment char in custom templates and convert it if the final comment char is different.
It ...
PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
...hird value of the array, it will contain the value bar because it was just set by the previous iteration of that loop.
Is it a bug?
No. This is the behavior of a referenced item, and not a bug. It would be similar to running something like:
for ($i = 0; $i < count($arr); $i++) { $item = $arr[$i];...
How can I find the number of arguments of a Python function?
How can I find the number of arguments of a Python function? I need to know how many normal arguments it has and how many named arguments.
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how do I check in bash whether a file was created more than x time ago?
I want to check in linux bash whether a file was created more than x time ago.
8 Answers
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Concatenating two std::vectors
...d only add code to first get the number of elements each vector holds, and set vector1 to be the one holding the greatest. Should you do otherwise you're doing a lot of unnecessary copying.
– Joe Pineda
Oct 14 '08 at 16:11
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How can I convert an RGB image into grayscale in Python?
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How about doing it with Pillow:
from PIL import Image
img = Image.open('image.png').convert('LA')
img.save('greyscale.png')
Using matplotlib and the formula
Y' = 0.2989 R + 0.5870 G + 0.1140 B
you could do:
import numpy as np
import matplotlib.pypl...
How to get the system uptime in Windows? [closed]
I am using windows 7 and xp. I want to know the uptime of the system.
3 Answers
3
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How do I create my own URL protocol? (e.g. so://…) [closed]
...ROOT\PROTOCOLS\Handler.
Create a string value, CLSID, under the subkey and set the string to the CLSID of your protocol handler.
See About Asynchronous Pluggable Protocols on MSDN for more details on the windows side. There is also a sample in the windows SDK.
A quick google also showed this arti...
How to convert a LocalDate to an Instant?
...stion.
Update: The accepted answer uses LocalDateTime::toInstant(ZoneOffset) which only accepts ZoneOffset. This answer uses LocalDate::atStartOfDay(ZoneId) which accepts any ZoneId. As such, this answer is generally more useful (and probably should be the accepted one).
PS. I was the main autho...