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C++ lambda with captures as a function pointer
...code compiles fine without lambda captures, but there is a type conversion error with lambda capture.
Solution with C++11 is to use std::function (edit: another solution that doesn't require modifying the function signature is shown after this example). You can also use boost::function (which ac...
How to implement OnFragmentInteractionListener
...those of you who visit this page looking for further clarification on this error, in my case the activity making the call to the fragment needed to have 2 implements in this case, like this:
public class MyActivity extends Activity implements
MyFragment.OnFragmentInteractionListener,
Navi...
If my interface must return Task what is the best way to have a no-operation implementation?
...
Recently encountered this and kept getting warnings/errors about the method being void.
We're in the business of placating the compiler and this clears it up:
public async Task MyVoidAsyncMethod()
{
await Task.CompletedTask;
}
This brings together the b...
How can I improve my paw detection?
...t changes > X in the other direction it is considered a turn to counter errors).
If you know at what frames it turns, you will know the frame where the pressure was the most hard and you will know where it was the least hard between the two paws. In theory, you then would know the two frames whe...
Get started with Latex on Linux [closed]
...
First you'll need to Install it:
If you're using a distro which packages LaTeX (almost all will do) then look for texlive or tetex. TeX Live is the newer of the two, and is replacing tetex on most distributions now.
If you're using Debian or Ubunt...
How to paste over without overwriting register
Does anyone know of a way to paste over a visually selected area without having the selection placed in the default register?
...
Disable assertions in Python
...nt call last):
File "<string>", line 1, in <module>
AssertionError
Note that by disable I mean it also does not execute the expression that follows it:
$ python -Oc "assert 1/0"
$ python -c "assert 1/0"
Traceback (most recent call last):
File "<string>", line 1, in <modu...
What's a correct and good way to implement __hash__()?
...be integers, and there aren't too many of them, I suppose you could potentially run slightly faster with some home-rolled hash, but it likely wouldn't be as well distributed. hash((self.attr_a, self.attr_b, self.attr_c)) is going to be surprisingly fast (and correct), as creation of small tuples is ...
Django MEDIA_URL and MEDIA_ROOT
... answer below; it is a better solution.
– Thane Brimhall
Apr 6 '16 at 14:14
is this in your app or project urls.py?
...
How to automatically generate N “distinct” colors?
I wrote the two methods below to automatically select N distinct colors. It works by defining a piecewise linear function on the RGB cube. The benefit of this is you can also get a progressive scale if that's what you want, but when N gets large the colors can start to look similar. I can also imagi...