大约有 46,000 项符合查询结果（耗时：0.0505秒） [XML]
Usages of Null / Nothing / Unit in Scala
...mple is this:
implicit def zeroNull[B >: Null] =
new Zero[B] { def apply = null }
Nothing is used in the definition of None
object None extends Option[Nothing]
This allows you to assign a None to any type of Option because Nothing 'extends' everything.
val x:Option[String] = None
...
Print the contents of a DIV
...
It sometimes happens if fails to load print preview, maybe when the content to print is quite big (i noticed it only with Chrome while same page prints perfeclty in Firefox, however i dont exclude it might happen in Firefox or other browse...
How to use OpenFileDialog to select a folder?
...ember as a user I was blaming these poor programmers that made yet another app with this awful tree view dialog (which is just the FolderBrowserDialog). It is completely unusable: a bunch of root dirs, a missing favorites panel, and the most horrible — you can't even paste a path there! And now as...
JavaScript editor within Eclipse [closed]
...o that you don't have to use a scripting language but can write the entire app in JS.
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Cannot set content-type to 'application/json' in jQuery.ajax
...elative URL as below.
$.ajax({
type: "POST",
contentType: "application/json",
url: '/Hello',
data: { name: 'norm' },
dataType: "json"
});
An example of mine that works:
$.ajax({
type: "POST",
url: siteRoot + "api/SpaceGame/AddPl...
Automatically deleting related rows in Laravel (Eloquent ORM)
... I believe the new / preferred Laravel way is to stick all of these in the AppServiceProvider's boot() method in this way: \App\User::deleting(function ($u) { $u->photos()->delete(); });
– Watercayman
Jan 26 '17 at 19:13
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How do I access the host machine from the guest machine? [closed]
... I am using Lion as Host and Win7 as Guest, but I could not visit my rails app on my mac using this. Why?
– larryzhao
Dec 30 '11 at 8:10
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Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
...o remove backstack at one time see developer.android.com/reference/android/app/…
– Lokesh
Nov 26 '15 at 16:45
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How to determine whether a given Linux is 32 bit or 64 bit?
...ks comes to mind, where the OS is 32-bit but its capable of running 64-bit apps)
– jww
Jun 17 '13 at 22:00
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How to terminate a Python script
...builtin exception instead of the preferable (and overwrittable) sys.exit wrapper
– MestreLion
May 4 '12 at 7:06
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