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C++ templates that accept only certain types
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I suggest using Boost's static assert feature in concert with is_base_of from the Boost Type Traits library:
template<typename T>
class ObservableList {
BOOST_STATIC_ASSERT((is_base_of<List, T>::value)); //Yes, the double parentheses are needed, otherwise the comma will be seen as...
Why have header files and .cpp files? [closed]
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Well, the main reason would be for separating the interface from the implementation. The header declares "what" a class (or whatever is being implemented) will do, while the cpp file defines "how" it will perform those features.
This reduces dependencies so that code that uses the h...
How to make a JSONP request from Javascript without JQuery?
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Here's a JSBin that can be used to fiddle with JSONP from Wikipedia. It was referenced in this answer.
– rkagerer
Mar 8 '13 at 14:07
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Generate Java class from JSON?
In a Java Maven project, how do you generate java source files from JSON? For example we have
13 Answers
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What is a “slug” in Django?
...-virgin
In this example, the-46-year-old-virgin is a slug: it is created from the title by down-casing all letters, and replacing spaces by hyphens -.
Also see the URL of this very web page for another example.
share
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How can I make XSLT work in chrome?
...197, issue 111905).
Imagine this scenario:
You receive an email message from an attacker containing a web page as an attachment, which you download.
You open the now-local web page in your browser.
The local web page creates an <iframe> whose source is https://mail.google.com/mail/.
Because...
Trim last character from a string
...rim method.
Trim - Removes all occurrences of
white space characters from the
beginning and end of this instance.
MSDN-Trim
Under this definition removing only last character from string is bad solution.
So if we want to "Trim last character from string" we should do something like thi...
What is the difference between Serialization and Marshaling?
...as RPC), the term "Marshaling" is used but don't understand how it differs from Serialization. Aren't they both transforming objects into series of bits?
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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...
Returning 'IList' vs 'ICollection' vs 'Collection'
I am confused about which collection type that I should return from my public API methods and properties.
6 Answers
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