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Fastest method of screen capturing on Windows
I want to write a screencasting program for the Windows platform, but am unsure of how to capture the screen. The only method I'm aware of is to use GDI, but I'm curious whether there are other ways to go about this, and, if there are, which incurs the least overhead? Speed is a priority.
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Is there a performance difference between a for loop and a for-each loop?
What, if any, is the performance difference between the following two loops?
16 Answers
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Adding a legend to PyPlot in Matplotlib in the simplest manner possible
...d(loc='upper left').
Consider this sample (tested with Python 3.8.0):
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 20, 1000)
y1 = np.sin(x)
y2 = np.cos(x)
plt.plot(x, y1, "-b", label="sine")
plt.plot(x, y2, "-r", label="cosine")
plt.legend(loc="upper left")
plt.ylim(-1.5...
Kotlin secondary constructor
How do I declare a secondary constructor in Kotlin?
12 Answers
12
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Red black tree over avl tree
AVL and Red black trees are both self-balancing except Red and black color in the nodes. What's the main reason for choosing Red black trees instead of AVL trees? What are the applications of Red black trees?
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Force “portrait” orientation mode
I'm trying to force the "portrait" mode for my application because my application is absolutely not designed for the "landscape" mode.
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You have not concluded your merge (MERGE_HEAD exists)
...y and went to conflict state. And the conflict wasn't resolved properly before the next pull.
Undo the merge and pull again.
To undo a merge:
git merge --abort [Since git version 1.7.4]
git reset --merge [prior git versions]
Resolve the conflict.
Don't forget to add and commit the merge.
gi...
How can I pair socks from a pile efficiently?
...was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average.
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RootViewController Switch Transition Animation
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hey Ole, I tried this approach, it worked partially, the thing is my app shall only stay in landscape mode, but by doing rootviewcontroller transition, the newly-presented view controller is loaded in portrait at the beginning, and quickly rotate to landscape m...
Detect Windows version in .net
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System.Environment.OSVersion has the information you need for distinguishing most Windows OS major releases, but not all. It consists of three components which map to the following Windows versions:
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