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Getting unique items from a list [duplicate]
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Use a HashSet<T>. For example:
var items = "A B A D A C".Split(' ');
var unique_items = new HashSet<string>(items);
foreach (string s in unique_items)
Console.WriteLine(s);
prints
A
B
D
C
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The 'packages' element is not declared
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Use <packages xmlns="urn:packages">in the place of <packages>
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Why can templates only be implemented in the header file?
...It is not necessary to put the implementation in the header file, see the alternative solution at the end of this answer.
Anyway, the reason your code is failing is that, when instantiating a template, the compiler creates a new class with the given template argument. For example:
template<type...
Position absolute and overflow hidden
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Make outer <div> to position: relative and inner <div> to position: absolute. It should work for you.
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What's the key difference between HTML 4 and HTML 5?
...e language that are currently (in HTML4) Flash or JS-based hacks, such as <canvas>, <video>, and <audio>. Useful things such as Local Storage (a js-accessible browser-built-in key-value database, for storing information beyond what cookies can hold), new input types such as date f...
How to ensure a form field is submitted when it is disabled?
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<select disabled="disabled">
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</select>
<input type="hidden" name="select_name" value="selected value" />
Where select_name is the name that you would normally give the <select>.
Another opti...
No IUserTokenProvider is registered
...ataProtectionProvider("SampleAppName");
var userManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>());
userManager.UserTokenProvider = new DataProtectorTokenProvider<ApplicationUser>(
provider.Create("SampleTokenName"));
You should also read this arti...
How to write trycatch in R
...then: welcome to the R world ;-)
Here you go
Setting up the code
urls <- c(
"http://stat.ethz.ch/R-manual/R-devel/library/base/html/connections.html",
"http://en.wikipedia.org/wiki/Xz",
"xxxxx"
)
readUrl <- function(url) {
out <- tryCatch(
{
# Just to...
Disabled input text color
...t webkit browsers (Safari and Chrome) and desktop IE have a number of default changes to disabled form elements that you'll need to override if you want to style disabled inputs.
-webkit-text-fill-color:#880000; /* Override iOS / Android font color change */
-webkit-opacity:1; /* Override iOS opaci...
Generating random integer from a range
...erly uniform distributed solution is
output = min + (rand() % static_cast<int>(max - min + 1))
Except when the size of the range is a power of 2, this method produces biased non-uniform distributed numbers regardless the quality of rand(). For a comprehensive test of the quality of this met...