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When to use virtual destructors?
I have a solid understanding of most OOP theory but the one thing that confuses me a lot is virtual destructors.
17 Answe...
How do I get an animated gif to work in WPF?
...edSource="Images/animated.gif" />
The package is really neat, you can set some attributes like below
<Image gif:ImageBehavior.RepeatBehavior="3x"
gif:ImageBehavior.AnimatedSource="Images/animated.gif" />
and you can use it in your code as well:
var image = new BitmapImage();
i...
Matplotlib scatterplot; colour as a function of a third variable
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There's no need to manually set the colors. Instead, specify a grayscale colormap...
import numpy as np
import matplotlib.pyplot as plt
# Generate data...
x = np.random.random(10)
y = np.random.random(10)
# Plot...
plt.scatter(x, y, c=y, s=500)
plt.g...
Prepend a level to a pandas MultiIndex
...el to the columns by adding axis=1, since the df.columns doesn't have the "set_index" method like the index, which always bugs me.
– Rutger Kassies
Feb 10 '17 at 12:32
2
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How can I debug git/git-shell related problems?
...w GIT_TRACE options, beyond the core one. Here's the über-verbose option: set -x; GIT_TRACE=2 GIT_CURL_VERBOSE=2 GIT_TRACE_PERFORMANCE=2 GIT_TRACE_PACK_ACCESS=2 GIT_TRACE_PACKET=2 GIT_TRACE_PACKFILE=2 GIT_TRACE_SETUP=2 GIT_TRACE_SHALLOW=2 git pull origin master -v -v; set +x
–...
position: fixed doesn't work on iPad and iPhone
...or vertical scrolling. But you need to make sure your meta tags are fully set. e.g
<meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">
Also if you're planning on having the same page work on and...
Do sealed classes really offer performance Benefits?
I have come across a lot of optimization tips which say that you should mark your classes as sealed to get extra performance benefits.
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How to detect unused methods and #import in Objective-C
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Xcode allows you to (un)check settings for specific compiler warnings that can warn you of some types of unused code. (Select the project in the source list and File > Get Info, then select the Build tab.) Here are a few (which show up for Clang and GC...
Is the practice of returning a C++ reference variable evil?
This is a little subjective I think; I'm not sure if the opinion will be unanimous (I've seen a lot of code snippets where references are returned).
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how to check the dtype of a column in python pandas
I need to use different functions to treat numeric columns and string columns. What I am doing now is really dumb:
6 Answer...