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C++ equivalent of java's instanceof
...t; Class::baseTypeContainer = Class::getTypeIndexes(Class::BaseTypes());
Demo
You can then use this stuff (with caution) as follows:
DemoClassHierarchy.hpp*
#include "InstanceOfMacros.h"
struct A {
virtual ~A() {}
INSTANCE_OF_BASE_DECL(A)
};
INSTANCE_OF_IMPL(A)
struct B : public A {
vir...
What is the difference between varchar and varchar2 in Oracle?
...egards to the functionality described in the accepted answer:-
Rextester demo for Oracle 11g:
Empty strings are inserted as NULLs for both VARCHAR
and VARCHAR2.
LiveSQL demo for Oracle 12c: Same results.
The historical reason for these two keywords is explained well in an answer to a different q...
What is your naming convention for stored procedures? [closed]
...text of the current database.
Here's a nice explanation, which includes a demo of the performance hit.
Here's another helpful source provided by Ant in a comment.
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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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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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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__
...
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...
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...
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;
}
...
Convenient C++ struct initialisation
...;< hw.hello << hw.world << std::endl;
return 0;
}
GCC Demo
MSVC Demo
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