大约有 13,350 项符合查询结果（耗时：0.0269秒） [XML]
switch / pattern matching idea
...Car as car when car.EngineType = Gasoline -> 200 + car.Doors * 20
| _ -> failwith "blah"
assuming you'd defined a class hierarchy along the lines of
type Vehicle() = class end
type Motorcycle(cyl : int) =
inherit Vehicle()
member this.Cylinders = cyl
type Bicycle() = inherit ...
How to unescape HTML character entities in Java?
... int j = i;
while (j < len && j < i + MAX_ESCAPE + 1 && input.charAt(j) != ';')
j++;
if (j == len || j < i + MIN_ESCAPE || j == i + MAX_ESCAPE + 1) {
i++;
continue;
}
// ...
Preventing scroll bars from being hidden for MacOS trackpad users in WebKit/Blink
... and
$(window).scroll
to check if the user already scrolled by himself,
_.delay()
to trigger a delay before you display the prompt -- the prompt shouldn't be to obtrusive
$('#prompt_div').fadeIn('slow')
to fade in your prompt and of course
$('#prompt_div').fadeOut('slow')
to fade out when the u...
Rails find_or_create_by more than one attribute?
There is a handy dynamic attribute in active-record called find_or_create_by:
5 Answers
...
Difference between socket and websocket?
...: http://highlevellogic.blogspot.com/2011/09/websocket-server-demonstration_26.html
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extract part of a string using bash/cut/split
... \) marks a capture group. This is \([^:]*\).
The [^:] says any character _except a colon, and the * means zero or more.
.* means the rest of the line.
\1 means substitute what was found in the first (and only) capture group. This is the name.
Here's the breakdown matching the string with the re...
In Go's http package, how do I get the query string on a POST request?
... I found it interesting req.Form is empty array unless req.formValue("some_field") is invoked at lease once.
– Qian Chen
Jun 21 '15 at 14:51
...
How to detect incoming calls, in an Android device?
...this:
Manifest:
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<!--This part is inside the application-->
<receiver android:name=".CallReceiver" >
<intent-fil...
How do I make an attributed string using Swift?
...
Now create the attributed g string (heh). Note: UIFont.systemFontOfSize(_) is now a failable initializer, so it has to be unwrapped before you can use it:
var attrs = [NSFontAttributeName : UIFont.systemFontOfSize(19.0)!]
var gString = NSMutableAttributedString(string:"g", attributes:attrs)
An...
Accessing Session Using ASP.NET Web API
...tion : System.Web.HttpApplication
{
...
protected void Application_PostAuthorizeRequest()
{
if (IsWebApiRequest())
{
HttpContext.Current.SetSessionStateBehavior(SessionStateBehavior.Required);
}
}
private bool IsWebApiRequest()
{
...