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Change select box option background color
...(150, 150, 150, 0.3);
}
select option[value="3"] {
background: rgba(200, 200, 200, 0.3);
}
select option[value="4"] {
background: rgba(250, 250, 250, 0.3);
}
<select>
<option value="">Please choose</option>
<option value="1">Option 1</option>
&l...
What's the Hi/Lo algorithm?
...machine word size, rather than the meaningfully-sized ranges (eg obtaining 200 keys at a time) which a human might sensibly choose.
Hi-Lo usage tends to waste large numbers of keys on server restart, and generate large human-unfriendly key values.
Better than the Hi-Lo allocator, is the "Linear Ch...
Java's final vs. C++'s const
The Java for C++ programmers tutorial says that (highlight is my own):
11 Answers
11...
Naming convention - underscore in C++ and C# variables
...erson. Here's how I understand them for the two languages in question:
In C++, an underscore usually indicates a private member variable.
In C#, I usually see it used only when defining the underlying private member variable for a public property. Other private member variables would not have an u...
What languages are Windows, Mac OS X and Linux written in?
...
Windows: C++, kernel is in C
Mac: Objective C, kernel is in C (IO PnP subsystem is Embedded C++)
Linux: Most things are in C, many userland apps are in Python, KDE is all C++
All kernels will use some assembly code as well.
...
Why does C# not provide the C++ style 'friend' keyword? [closed]
The C++ friend keyword allows a class A to designate class B as its friend. This allows Class B to access the private / protected members of class A .
...
drag drop files into standard html file input
... of important*/
width: 300px;
/*Sort of important*/
height: 200px;
position:absolute;
left:50%;
top:100px;
margin-left:-150px;
border: 2px dashed rgba(0,0,0,.3);
border-radius: 20px;
font-family: Arial;
text-align: center;
position: relativ...
How do I make a semi transparent background?
...NG up to 10x10, 100x100, etc. Whatever makes sense on your page. (I used a 200x200 PNG and it was only 0.25 kb, so there's no real concern over file size here.)
After visiting this post, I created my web page with 3, 1x1 PNGs with varying transparency.
Dreamweaver CS5 was tanking. I was having fl...
Converting bool to text in C++
...
How about using the C++ language itself?
bool t = true;
bool f = false;
std::cout << std::noboolalpha << t << " == " << std::boolalpha << t << std::endl;
std::cout << std::noboolalpha << f...
How fast is D compared to C++?
...
You are losing features which C++ never had. Most languages don't give you a choice.
– Vladimir Panteleev
Feb 28 '11 at 13:45
6
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