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How to grey out a button?
...without having to create a state list, I would create a Kotlin extension.
fun View.disable() {
getBackground().setColorFilter(Color.GRAY, PorterDuff.Mode.MULTIPLY)
setClickable(false)
}
In Java you can do something is similar with a static util function and you would just have to pass in ...
Can I have onScrollListener for a ScrollView?
...ow the scroll position of a view, then you can use the following extension function on View class:
fun View?.onScroll(callback: (x: Int, y: Int) -> Unit) {
var oldX = 0
var oldY = 0
this?.viewTreeObserver?.addOnScrollChangedListener {
if (oldX != scrollX || oldY != scrollY) {...
How do I update my bare repo?
...it clone --mirror ssh://git@source.address:2000/repo
git remote add remote_site ssh://git@remote_site.address/repo
git config remote.origin.fetch 'refs/heads/*:refs/heads/*'
Everytime I want to sync:
cd /home/myhome/repo.git
git --bare fetch ssh://git@source.address:2000/repo
git fetch ssh://git...
What's the difference between lapply and do.call?
I'm learning R recently and confused by two function: lapply and do.call . It seems that they're just similar to map function in Lisp. But why are there two functions with such a different name? Why doesn't R just use a function called map ?
...
What is the best way to do GUIs in Clojure?
...
making Swing fun? They said it wasn't possible!
– Michael Bylstra
Jan 26 '13 at 4:15
9
...
How do I install pip on macOS or OS X?
...
Installed /Library/Python/2.7/site-packages/pip-6.0.6-py2.7.egg -- what about my python3 installation? Does this just mean that pip uses my python2 installation?
– temporary_user_name
Jan 8 '15 at 22:37
...
Change the name of the :id parameter in Routing resources for Rails
...; 'clients#show', :as => client
scope 'clients/:client_name' do
get 'sites/:name', :to => 'sites#show', :as => site
end
You would have to manually add all the routes that resources automatically creates for you, but it would achieve what you're looking for. You could also effectively u...
How do 20 questions AI algorithms work?
...get there you can click on the code link to see it: openbookproject.net/py4fun/animal/animal.html
– Noctis Skytower
Jul 1 '10 at 22:49
...
Multiple cases in switch statement
...e(11,20).Contains(c))
DoAnotherThing();
But I think we can have more fun: since you won't need the return values and this action doesn't take parameters, you can easily use actions!
public static void MySwitchWithEnumerable(int switchcase, int startNumber, int endNumber, Action action)
{
...
How can I create an object and add attributes to it?
...to make a "bunch class", a very simple one already exists in Python -- all functions can have arbitrary attributes (including lambda functions). So, the following works:
obj = someobject
obj.a = lambda: None
setattr(obj.a, 'somefield', 'somevalue')
Whether the loss of clarity compared to the ven...