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How to add item to the beginning of List?
...o be an IEnumerable.
// Creating an array of numbers
var ti = new List<int> { 1, 2, 3 };
// Prepend and Append any value of the same type
var results = ti.Prepend(0).Append(4);
// output is 0, 1, 2, 3, 4
Console.WriteLine(string.Join(", ", results ));
...
How to get Android crash logs?
...oaded by other people and crashing on remote devices, you may want to look into an Android error reporting library (referenced in this SO post). If it's just on your own local device, you can use LogCat. Even if the device wasn't connected to a host machine when the crash occurred, connecting the ...
How to match a String against string literals in Rust?
...
as_slice is deprecated, you should now use the trait std::convert::AsRef instead:
match stringthing.as_ref() {
"a" => println!("0"),
"b" => println!("1"),
"c" => println!("2"),
_ => println!("something else!"),
}
Note that you also have to explicitly h...
Access-control-allow-origin with multiple domains
...Allow-Origin). Rewrite uses underscores "_" instead of dashes "-" (rewrite converts them to dashes)
Explaining the server variable HTTP_ORIGIN :
Similarly, in Rewrite you can grab any Request Header using HTTP_ as the prefix. Same rules with the dashes (use underscores "_" instead of dashes "-").
...
This project references NuGet package(s) that are missing on this computer
...in this snippet you can see where the error message is coming from.
I was converting from MSBuild-Integrated Package Restore to Automatic Package Restore (http://docs.nuget.org/docs/workflows/migrating-to-automatic-package-restore)
...
decimal vs double! - Which one should I use and when? [duplicate]
... some base 10 numbers are corrupted because they are an infinite series if converted to a base 2 exp, in binary float math 0.1 * 0.1 != 0.01 because 0.1 cannot be represented exactly. Math operations also lead to drift - add and subtract with dollars and cents and you can get numbers like 0.99999999...
Double vs. BigDecimal?
...es store values as binary and therefore might introduce an error solely by converting a decimal number to a binary number, without even doing any arithmetic.
Decimal numbers (like BigDecimal), on the other hand, store each decimal digit as is. This means that a decimal type is not more precise than...
When to use virtual destructors?
...en you might potentially delete an instance of a derived class through a pointer to base class:
class Base
{
// some virtual methods
};
class Derived : public Base
{
~Derived()
{
// Do some important cleanup
}
};
Here, you'll notice that I didn't declare Base's destructo...
How to make connection to Postgres via Node.js
...arted that instance with postgres -D /usr/local/pgsql/data now how can I interact with this through node? For example, what would the connectionstring be, or how am I able to find out what it is.
...
UITableView, Separator color where to set?
...View: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
if(view.isKindOfClass(UITableViewHeaderFooterView)){
var headerView = view as! UITableViewHeaderFooterView;
headerView.backgroundView?.backgroundColor = myColor
//Other color...