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What exactly is LLVM?
...ility to play with LLVM's machine code generated from C or C++ code at the demo page.
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Python __str__ versus __unicode__
... (where venv2/venv3 are virtualenv instances):
~/tmp$ ./venv3/bin/python3 demo_python_2_unicode_compatible.py
Called __str__
Python 3 does not support unicode()
~/tmp$ ./venv2/bin/python2 demo_python_2_unicode_compatible.py
Called __str__
Called __str__
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How to use UIVisualEffectView to Blur Image?
...UI Elements. It gives me full landscape support, too. I have made a little demo of using UIVisualEffects with Blur and also Vibrancy.
Demo on Github
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How to replace plain URLs with links?
...ref attribute inside anchor () tags"). I'll thrown some tests at it when a demo becomes available.
Libraries that I've disqualified quickly for this task:
Django's urlize didn't handle certain TLDs properly (here is the official list of valid TLDs. No demo.
autolink-js wouldn't detect "www.googl...
Is there a 'box-shadow-color' property?
...st)
Firefox 13+ (at least)
IE9+ (IE8 doesn't support box-shadow at all)
Demo
div {
box-shadow: 0 0 50px;
transition: 0.3s color;
}
.green {
color: green;
}
.red {
color: red;
}
div:hover {
color: yellow;
}
/*demo style*/
body {
text-align: center;
}
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Convenient C++ struct initialisation
...;< hw.hello << hw.world << std::endl;
return 0;
}
GCC Demo
MSVC Demo
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Regex Pattern to Match, Excluding when… / Except between
...tten like this:
(?m)^.*\.$|\([^\)]*\)|if\(.*?//endif|(\b\d+\b)
See this demo (but focus on the capture groups in the lower right pane.)
If you mentally try to split this regex at each | delimiter, it is actually only a series of four very simple expressions.
For flavors that support free-spacin...
C++, What does the colon after a constructor mean? [duplicate]
...here I want to initialise m_val based on the constructor parameter:
class Demo
{
Demo(int& val)
{
m_val = val;
}
private:
const int& m_val;
};
By the C++ specification, this is illegal. We cannot change the value of a const variable in the constructor, because ...
How to make an OpenGL rendering context with transparent background?
...Vista and Windows 7 you can achieve quite the same effect as in my x11argb demo below. The PIXELFORMATDESCRIPTOR supports a new flag to enable composition. I've yet to create a demo for this, though. Not going to happen until April, though, when I've got time for that again.
– ...
Count characters in textarea
...solution:
<textarea maxlength='140'></textarea>
JavaScript (demo):
const textarea = document.querySelector("textarea");
textarea.addEventListener("input", event => {
const target = event.currentTarget;
const maxLength = target.getAttribute("maxlength");
const currentL...