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How do short URLs services work?
...n the database, they find a description (sometimes), your name (sometimes) and the real URL. Then they issue a redirect, which is a HTTP 302 response and the target URL in the header.
This direct redirect is important. If you were to use files or first load HTML and then redirect, the browser would...
Difference between fmt.Println() and println() in Go
As illustrated below, both fmt.Println() and println() give same output in Go: Hello world!
5 Answers
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What's the meaning of Base SDK, iOS deployment target, Target, and Project in xcode
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The base SDK is what you build your app against (i.e. include and library files and frameworks). As you say, it doesn't affect the deployment target, except that base sdk >= deployment target.
You specify build settings on 2 levels as each project can have multiple targets and you ...
How to check if any flags of a flag combination are set?
...f you want to know if letter has any of the letters in AB you must use the AND & operator. Something like:
if ((letter & Letters.AB) != 0)
{
// Some flag (A,B or both) is enabled
}
else
{
// None of them are enabled
}
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How can I avoid running ActiveRecord callbacks?
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This solution is Rails 2 only.
I just investigated this and I think I have a solution. There are two ActiveRecord private methods that you can use:
update_without_callbacks
create_without_callbacks
You're going to have to use send to call these methods. examples:
p = Person.ne...
test if event handler is bound to an element in jQuery [duplicate]
Is it possible to determine whether an element has a click handler, or a change handler, or any kind of event handler bound to it using jQuery?
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Difference between `data` and `newtype` in Haskell
...resentation at runtime, as the type that you wrap.
While data declares a brand new data structure at runtime.
So the key point here is that the construct for the newtype is guaranteed to be erased at compile time.
Examples:
data Book = Book Int Int
newtype Book = Book (Int, Int)
Note ...
Javascript library for human-friendly relative date formatting [closed]
...braries available, but it is trivial to implement it yourself. Just use a handful of conditions.
Assume date is an instantiated Date object for the time you want to make a comparison against.
// Make a fuzzy time
var delta = Math.round((+new Date - date) / 1000);
var minute = 60,
hour = minut...
Operator Overloading with C# Extension Methods
...t currently possible, because extension methods must be in static classes, and static classes can't have operator overloads. But the feature is being discussed for some future release of C#. Mads talked a bit more about implementing it in this video from 2017.
On why it isn't currently implemented, ...
How to fix getImageData() error The canvas has been tainted by cross-origin data?
...com to hoover up images from the remote dropbox image url, into my canvas, and then submit the image data back into my server. All in javascript
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