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List vs tuple, when to use each? [duplicate]
...issue mentioned in the other answers. Mutability has teeth to it (you actually can't change a tuple), while homogeneity is not enforced, and so seems to be a much less interesting distinction.
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Display an array in a readable/hierarchical format
... to get the data as string. Now you can return '<pre>'.print_r(User::all(), true); from your routes file.
– DutGRIFF
Nov 5 '14 at 19:43
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Get a random item from a JavaScript array [duplicate]
... not a valid substitution for Math.floor. Using round would cause accidentally referencing an undefined index, say in the case Math.random() is 0.95 and items.length is 5. Math.round(0.95*5) is 5, which would be an invalid index. floor(random) will always be zero in your example.
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How to find the operating system version using JavaScript?
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If you list all of window.navigator's properties using
console.log(navigator);
You'll see something like this
# platform = Win32
# appCodeName = Mozilla
# appName = Netscape
# appVersion = 5.0 (Windows; en-US)
# language = en-US
# ...
NSNotificationCenter addObserver in Swift
...)
NSNotificationCenter.defaultCenter().removeObserver(self) // Remove from all notifications being observed
Method handler for received Notification
func methodOfReceivedNotification(notification: NSNotification) {
// Take Action on Notification
}
Annotate either the class or the target metho...
Why is Scala's immutable Set not covariant in its type?
...ameter of type A due to the contravariance of functions. Set could potentially be contravariant in A, but this too causes issues when you want to do things like this:
def elements: Iterable[A]
In short, the best solution is to keep things invariant, even for the immutable data structure. You'll...
How to call a method with a separate thread in Java?
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answered Aug 15 '10 at 22:32
Noel MNoel M
14.4k77 gold badges3535 silver badges4545 bronze badges
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How is std::function implemented?
According to the sources I have found, a lambda expression is essentially implemented by the compiler creating a class with overloaded function call operator and the referenced variables as members. This suggests that the size of lambda expressions varies, and given enough references variables tha...
How do I format a Microsoft JSON date?
...some trouble with the JSON data that is returned for Date data types. Basically, I'm getting a string back that looks like this:
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How to set enum to null
...lable?
– LuckyLikey
Dec 14 '15 at 8:32
for those who already have the nullable type declared in their class and come h...