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Open an IO stream from a local file or url
... well as a local file. It returns a File object, so you should be able to call methods like read and readlines.
require 'open-uri'
file_contents = open('local-file.txt') { |f| f.read }
web_contents = open('http://www.stackoverflow.com') {|f| f.read }
...
Class type check in TypeScript
...ou can add a validating function that returns a type predicate.
So you can call this function inside an if statement, and be sure that all the code inside that block is safe to use as the type you think it is.
Example from the TypeScript docs:
function isFish(pet: Fish | Bird): pet is Fish {
re...
Equivalent of jQuery .hide() to set visibility: hidden
...an example on how to support additional parameters of show (speed, easing, callback)?
– georg
Mar 8 '12 at 8:57
11
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How to redirect to a dynamic login URL in ASP.NET MVC
...no good reason you shouldn't), something at the end of the day is going to call FormsAuthentication.RedirectToLoginPage() which is going to look at the one configured URL. There's only one login URL, ever, and that's just how they designed it.
My stab at the problem (possibly a Rube Goldberg implem...
How many and which are the uses of “const” in C++?
...estructor of it doesn't need to be virtual - the right destructor is still called:
ScopeGuard const& guard = MakeGuard(&cleanUpFunction);
Explanation, using code:
struct ScopeGuard {
~ScopeGuard() { } // not virtual
};
template<typename T> struct Derived : ScopeGuard {
T...
getViewTypeCount and getItemViewType methods of ArrayAdapter
...terView tries to display items that are visible to the user.
The framework calls getItemViewType for row n, the row it is about to display.
The framework checks its recycled views pool for views of row n's type. It doesn't find any because no views have been recycled yet.
getView is called for row n...
C#: Raising an inherited event
...or not).
Then, in classes that inherit from this base class, you can just call the OnFinished or OnLoading methods to raise the events:
public AnotherClass : MyClass
{
public void DoSomeStuff()
{
...
OnLoading(EventArgs.Empty);
...
OnFinished(EventArgs.Empty...
How to make a cross-module variable?
...
Define a module ( call it "globalbaz" ) and have the variables defined inside it. All the modules using this "pseudoglobal" should import the "globalbaz" module, and refer to it using "globalbaz.var_name"
This works regardless of the place of...
Change Author template in Android Studio
...ode Templates -> Includes -> File Header prepend the #set() function call, for example:
#set( $USER = "Your name" )
/**
* Created by ${USER} on ${DATE}.
*/
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...
How does std::move() transfer values into RValues?
...g);
}
Let's start with the easier part - that is, when the function is called with rvalue:
Object a = std::move(Object());
// Object() is temporary, which is prvalue
and our move template gets instantiated as follows:
// move with [T = Object]:
remove_reference<Object>::type&& ...