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How to define @Value as optional

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How to develop and test an app that sends emails (without filling someone's mailbox with test data)?

... the same problem a few weeks ago and wrote this: http://smtp4dev.codeplex.com Windows 7/Vista/XP/2003/2010 compatible dummy SMTP server. Sits in the system tray and does not deliver the received messages. The received messages can be quickly viewed, saved and the source/structure inspected. Use...
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How to understand Locality Sensitive Hashing?

... Similar Items http://infolab.stanford.edu/~ullman/mmds/ch3a.pdf Also I recommend the below slide: http://www.cs.jhu.edu/%7Evandurme/papers/VanDurmeLallACL10-slides.pdf . The example in the slide helps me a lot in understanding the hashing for cosine similarity. I borrow two slides from Benjamin V...
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Mercurial .hgignore for Visual Studio 2010 projects

... Probably should add *.publishsettings as well: twitter.com/shanselman/status/294541436236480512 – Pandincus Jan 24 '13 at 21:13  |  ...
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AngularJS : Where to use promises?

... This is not going to be a complete answer to your question, but hopefully this will help you and others when you try to read the documentation on the $q service. It took me a while to understand it. Let's set aside AngularJS for a moment and just co...
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How do I round a decimal value to 2 decimal places (for output on a page)

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All Ruby tests raising: undefined method `authenticate' for nil:NilClass

... create a spec/support/devise.rb file as specified here https://github.com/plataformatec/devise#test-helpers to include the devise test helpers #ruby Thanks once again. share | improve this ...
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How do I get the current version of my iOS project in code?

...v\(version)" : "v\(version)(\(build))" } } Gist: https://gist.github.com/ashleymills/6ec9fce6d7ec2a11af9b Here's the equivalent in Objective-C: + (NSString *) appVersion { return [[NSBundle mainBundle] objectForInfoDictionaryKey: @"CFBundleShortVersionString"]; } + (NSString *) bu...
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How to export plots from matplotlib with transparent background?

...ere's a screenshot of the PNG file displayed using the ImageMagick display command. The checkerboard pattern is the background that is visible through the transparent parts of the PNG file. share | ...
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converting drawable resource image into bitmap

... after implementing the solution I'm getting this ... ... E/CommitToConfigurationOperation: Malformed snapshot token (size): ... E/NotificationService: Not posting notification with icon==0: Notification(pri=0 contentView=null vibrate=null sound=content://settings/system/notification...