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How can I pass a member function where a free function is expected?
...nctions are not like normal function pointers: member functions need to be called on an object which is passed as an implicit argument to the function. The signature of your member function above is, thus
void (aClass::*)(int, int)
rather than the type you try to use
void (*)(int, int)
One app...
Targeting only Firefox with CSS
...s as of Firefox 59, released March 2018: bugzilla.mozilla.org/show_bug.cgi?id=1035091
– Jordan Gray
Dec 17 '19 at 17:16
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show 8 more commen...
How do you run your own code alongside Tkinter's event loop?
...ation for the after method:
def after(self, ms, func=None, *args):
"""Call function once after given time.
MS specifies the time in milliseconds. FUNC gives the
function which shall be called. Additional parameters
are given as parameters to the function call. Return
identifie...
Passing arguments to C# generic new() of templated type
...;T>(...) where T : new()
However that will only work when you want to call the constructor which has no parameters. Not the case here. Instead you'll have to provide another parameter which allows for the creation of object based on parameters. The easiest is a function.
public static str...
When is “i += x” different from “i = i + x” in Python?
...
This depends entirely on the object i.
+= calls the __iadd__ method (if it exists -- falling back on __add__ if it doesn't exist) whereas + calls the __add__ method1 or the __radd__ method in a few cases2.
From an API perspective, __iadd__ is supposed to be used f...
Android REST client, Sample?
...sponses.
My approach uses just AsyncTasks under the covers. In my case, I "call" these Tasks from my Activity instance; but to fully account for cases like screen rotation, you might choose to call them from a Service or such.
I consciously chose my REST client itself to be an API. This means, that ...
Make Https call using HttpClient
I have been using HttpClient for making WebApi calls using C#. Seems neat & fast way compared to WebClient . However I am stuck up while making Https calls.
...
Recover from git reset --hard?
...ged changes (git add) should be recoverable from index objects, so if you did, use git fsck --lost-found to locate the objects related to it. (This writes the objects to the .git/lost-found/ directory; from there you can use git show <filename> to see the contents of each file.)
If not, the a...
Why are Subjects not recommended in .NET Reactive Extensions?
...styles of system you need to ingrate to.
The system raises an event or a call back when a message arrives
You need to poll the system to see if there are any message to process
For option 1, easy, we just wrap it with the appropriate FromEvent method and we are done. To the Pub!
For option 2, w...
Finding Variable Type in JavaScript
...e the output of Object.prototype.toString:
> Object.prototype.toString.call([1,2,3])
"[object Array]"
> Object.prototype.toString.call("foo bar")
"[object String]"
> Object.prototype.toString.call(45)
"[object Number]"
> Object.prototype.toString.call(false)
"[object Boolean]"
> Obje...