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How do I convert a Ruby class name to a underscore-delimited symbol?
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Thanks. I was afraid this was a Rails extension. :) No worries, as I am actually using Rails.
– Josh Glover
Apr 11 '11 at 14:25
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Ruby Regexp group matching, assign variables on 1 line
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You have to decide whether it is a good idea, but ruby regexp can (automagically) define local variables for you!
I am not yet sure whether this feature is awesome or just totally crazy, but your regex can define local variables.
ryan_str...
Filtering a list based on a list of booleans
...paring things to True, this is usually not necessary. Instead of if filter[idx]==True: ..., you can simply write if filter[idx]: ....
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What is an SDL renderer?
...Rect* dstrect)
Where you want to render the texture in the window. If the width and height of this SDL_Rect is smaller or larger than the dimensions of the texture itself, the texture will be stretched according to this SDL_Rect
SDL_RenderPresent(renderer);
The other SDL_Render* functions draws t...
How do I read / convert an InputStream into a String in Java?
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Taking into account file one should first get a java.io.Reader instance. This can then be read and added to a StringBuilder (we don't need StringBuffer if we are not accessing it in multiple threads, and StringBuilder is faster). The trick here ...
Align button at the bottom of div using CSS
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@Harry Joy: Did you also apply position: relative to the element that's containing your form+button?
– thirtydot
Apr 28 '11 at 10:43
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python numpy ValueError: operands could not be broadcast together with shapes
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It's possible that the error didn't occur in the dot product, but after.
For example try this
a = np.random.randn(12,1)
b = np.random.randn(1,5)
c = np.random.randn(5,12)
d = np.dot(a,b) * c
np.dot(a,b) will be fine; however np.dot(a, b) * c is clearly...
Loading/Downloading image from URL on Swift
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Xcode 8 or later • Swift 3 or later
Synchronously:
if let filePath = Bundle.main.path(forResource: "imageName", ofType: "jpg"), let image = UIImage(contentsOfFile: filePath) {
imageView.contentMode = .scaleAspectFit
imageView.image = image
}
Asynchronously:
Create a method ...
How to use RSpec's should_raise with any kind of exception?
...ions/v/2-13/docs/built-in-matchers/raise-error-matcher
RSpec 1:
http://apidock.com/rspec/Spec/Matchers/raise_error
http://apidock.com/rspec/Spec/Matchers/raise_exception
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How to specify font attributes for all elements on an html web page?
...font family, font size, color etc. it seems that some nested elements override these with ugly browser defaults.
6 Answers
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