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How to prevent multiple instances of an Activity when it is launched with different Intents
I've come across a bug in my application when it is launched using the "Open" button on the Google Play Store app (previously called Android Market). It seems that launching it from the Play Store uses a different Intent than launching it from the phone's application menu of icons. This is leadi...
Get margin of a View
...oup.MarginLayoutParams) view.getLayoutParams();
http://developer.android.com/reference/android/view/ViewGroup.MarginLayoutParams.html
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Disable mouse scroll wheel zoom on embedded Google Maps
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I was having the same problem: when scrolling the page then the pointer becomes over the map, it starts to zoom in/out the map instead of continuing scrolling the page. :(
So I solved this putting a div with an .overlay exactly before each gmap iframe insertion, see:
<html>
<div class=...
Maximum length of the textual representation of an IPv6 address?
...ting that the IPv6 address might also contain the scope zone stackoverflow.com/questions/5746082/…, e.g. you get that from RemoteEndpointMessageProperty.Address
– Rory
Jun 18 '12 at 10:26
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await vs Task.Wait - Deadlock?
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Wait and await - while similar conceptually - are actually completely different.
Wait will synchronously block until the task completes. So the current thread is literally blocked waiting for the task to complete. As a general rule, you should use "async all the way down"; that is, ...
Removing all unused references from a project in Visual Studio projects
...(right click) References > Optimize References...
http://www.jetbrains.com/resharper/webhelp/Refactorings__Remove_Unused_References.html
This feature does not correctly handle:
Dependency injected assemblies
Dynamically loaded assemblies (Assembly.LoadFile)
Native code assemblies loaded throu...
Basic http file downloading and saving to disk in python?
...urllib
testfile = urllib.URLopener()
testfile.retrieve("http://randomsite.com/file.gz", "file.gz")
This downloads a file from a website and names it file.gz. This is one of my favorite solutions, from Downloading a picture via urllib and python.
This example uses the urllib library, and it will...
What does FrameLayout do?
...View.
For example:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="@+id/backgroundImage"
android:layout_...
Rails - Validate Presence Of Association?
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You can use validates_presence_of http://apidock.com/rails/ActiveModel/Validations/ClassMethods/validates_presence_of
class A < ActiveRecord::Base
has_many :bs
validates_presence_of :bs
end
or just validates
http://apidock.com/rails/ActiveModel/Validations/ClassMe...
Launch Bootstrap Modal on page load
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