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Convert RGBA PNG to RGB with PIL
...mage object
dst -- PIL RGBA Image object
The algorithm comes from http://en.wikipedia.org/wiki/Alpha_compositing
'''
# http://stackoverflow.com/a/3375291/190597
# http://stackoverflow.com/a/9166671/190597
src = np.asarray(src)
dst = np.asarray(dst)
out = np.empty(src...
Get margin of a View
...LayoutParams lp = (ViewGroup.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
...ay" onClick="style.pointerEvents='none'"></div>
<iframe src="https://mapsengine.google.com/map/embed?mid=some_map_id" width="640" height="480"></iframe>
</html>
In my CSS i created the class:
.overlay {
background:transparent;
position:relative;
width:640px...
jQuery `.is(“:visible”)` not working in Chrome
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An ancestor element is hidden, so the element is not shown on the page.
http://api.jquery.com/visible-selector/
Here's a small jsfiddle example with one visible and one hidden element:
http://jsfiddle.net/tNjLb/
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What should a Multipart HTTP request with multiple files look like? [duplicate]
I'm working on an iPhone app that makes a multipart HTTP request with multiple image files.
2 Answers
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How to profile methods in Scala?
What is a standard way of profiling Scala method calls?
12 Answers
12
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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/Vali...
How to get domain URL and application name?
...e web application name (actually the context path) is available by calling HttpServletrequest#getContextPath() (and thus NOT getServletPath() as one suggested before). You can retrieve this in JSP by ${pageContext.request.contextPath}.
<p>The context path is: ${pageContext.request.contextPat...
Block Declaration Syntax List
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I personally like using this website (http://fuckingblocksyntax.com). The name is easier to remember than the block syntax itself:
http://fuckingblocksyntax.com
and if you can't load URLs with bad words in them you can use this mirror: http://goshdarnblocksynt...
java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
...ooking at your code. However, this article has some tips that might help:
http://android-developers.blogspot.de/2009/01/avoiding-memory-leaks.html
In particular, using static variables is likely to make things worse, not better. You might need to add code that removes callbacks when your applicati...