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Is there a builtin identity function in python?
...ing "multiple values" in Python is to return a tuple of the values - technically that's one return value but it can be used in most contexts as if it were multiple values. But doing that here means you get
>>> def mv_identity(*args):
... return args
...
>>> mv_identity(1,2,3)
...
How to get the body's content of an iframe in Javascript?
...// or
var iframeContent = iframeDocument.querySelectorAll('#frameBody');
Call functions in the iframe
Get just the window element from iframe to call some global functions, variables or whole libraries (e.g. jQuery):
var iframeWindow = iframe.contentWindow;
// you can even call jQuery or other ...
Create singleton using GCD's dispatch_once in Objective-C
...and thread-safe way to create an instance of your class. It may not technically be a "singleton" (in that there can only ever be 1 of these objects), but as long as you only use the [Foo sharedFoo] method to access the object, this is good enough.
...
ASP.NET MVC controller actions that return JSON or partial html
...ctionMethod() {
return Json(new {foo="bar", baz="Blech"});
}
Then just call the action method using Ajax. You could use one of the helper methods from the ViewPage such as
<%= Ajax.ActionLink("SomeActionMethod", new AjaxOptions {OnSuccess="somemethod"}) %>
SomeMethod would be a javascr...
Programmatically update widget from activity/service/receiver
...
It call the onRecieve override method. But i want how to call onUpdate method.
– Amit Thaper
Feb 18 '13 at 6:52
...
中文网（自研/维护）拓展 · App Inventor 2 中文网
...tyNotification
获得优先通知。
事件
CallbackButtonAction(nameAction)
单击任何操作按钮时，该块将返回相应按钮的名称。
CallbackButtonProgress(nameButton)
返回进度通知中按下的操作按钮的名称。
CallbackMessage(message,...
Sequence contains no elements?
...
In case of async call use .FirstOrDefaultAsync();
– Andrea Girardi
Sep 21 '18 at 14:57
add a comment
...
Adding options to select with javascript
...t.innerHTML = i;
select.appendChild(opt);
}
}
}
// calling the function with all three values:
populateSelect('selectElementId',12,100);
// calling the function with only the 'id' ('min' and 'max' are set to defaults):
populateSelect('anotherSelect');
// calling the functio...
Android - Set fragment id
...
You can't set a fragment's ID programmatically.
There is however, a String tag that you can set inside the FragmentTransaction which can be used to uniquely identify a Fragment.
As Aleksey pointed out, you can pass an ID to FragmentTransaction's add(int, Fragment)...
Call two functions from same onclick [duplicate]
...
Add semi-colons ; to the end of the function calls in order for them both to work.
<input id="btn" type="button" value="click" onclick="pay(); cls();"/>
I don't believe the last one is required but hey, might as well add it in for good measure.
Here is a good...