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Create a custom event in Java

...ic void sayHello() { System.out.println("Hello!!"); // Notify everybody that may be interested. for (HelloListener hl : listeners) hl.someoneSaidHello(); } } // Someone interested in "Hello" events class Responder implements HelloListener { @Override ...
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Get Base64 encode file-data from Input Form

...at, but it's here if you want to take a look; it's pretty neat. What I do now: The code for converting to string from a Uint8Array is pretty simple (where buf is a Uint8Array): function uint8ToString(buf) { var i, length, out = ''; for (i = 0, length = buf.length; i < length; i += 1) {...
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input type=“submit” Vs button tag are they interchangeable?

...lity to adopt to the new spec once it is officialized. HTML5, as of right now, has been official for over one year now, and has been shown in many cases to boost SEO. * With the exception of <button type="button"> which by default has no specified behaviour. In summary, I highly di...
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Lazy Method for Reading Big File in Python?

...1k.""" while True: data = file_object.read(chunk_size) if not data: break yield data with open('really_big_file.dat') as f: for piece in read_in_chunks(f): process_data(piece) Another option would be to use iter and a helper function: f = op...
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How do I filter ForeignKey choices in a Django ModelForm?

...et to the field's queryset attribute. Depends on how your form is built. If you build an explicit form, you'll have fields named directly. form.rate.queryset = Rate.objects.filter(company_id=the_company.id) If you take the default ModelForm object, form.fields["rate"].queryset = ... This is d...
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Fastest Way to Serve a File Using PHP

... Jords: I didn't know that apache also supported this, i'll add this to my answer when i have time. The only problem with it is that i isn't unified (X-Accel-Redirect nginx for example) so a second solution is needed if the server either don't...
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Are nested try/except blocks in python a good programming practice?

... In summary the only problem would be your code getting too much indented. If you feel like it, try to simplify some of the nestings like lqc suggested in the suggested answer above. share | improve...
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Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req

...not seeing the same problem when using postman, this means that you are unknowingly not sending the same request via postman. – Ray Nicholus Nov 17 '13 at 20:01 ...
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How do you generate dynamic (parameterized) unit tests in python?

...(a, b): def test(self): self.assertEqual(a,b) return test if __name__ == '__main__': for t in l: test_name = 'test_%s' % t[0] test = test_generator(t[1], t[2]) setattr(TestSequense, test_name, test) unittest.main() ...
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Change color of UISwitch in “off” state

... The Best way to manage background color & size of UISwitch For now it's Swift 2.3 code import Foundation import UIKit @IBDesignable class UICustomSwitch : UISwitch { @IBInspectable var OnColor : UIColor! = UIColor.blueColor() @IBInspectable var OffColor : UIColor! = UIColor.gr...