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ruby inheritance vs mixins

In Ruby, since you can include multiple mixins but only extend one class, it seems like mixins would be preferred over inheritance. ...
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what is the difference between ?:, ?! and ?= in regex?

...sitive look behind ?<! is for negative look behind Please check here: http://www.regular-expressions.info/lookaround.html for very good tutorial and examples on lookahead in regular expressions. share | ...
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In C#, What is a monad?

There is a lot of talk about monads these days. I have read a few articles / blog posts, but I can't go far enough with their examples to fully grasp the concept. The reason is that monads are a functional language concept, and thus the examples are in languages I haven't worked with (since I haven'...
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Adding a UILabel to a UIToolbar

I'm trying to add a label to my toolbar. Button works great, however when I add the label object, it crashes. Any ideas? 8 ...
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adb server version doesn't match this client

...tory produced- “Android Debug Bridge version 1.0.31" So just followed - http://bernaerts.dyndns.org/linux/74-ubuntu/328-ubuntu-trusty-android-adb-fastboot-qtadb to update the adb in “/usr/bin” # adb version Android Debug Bridge version 1.0.31 # wget -O - https://skia.googlesource.com/skia/+a...
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Seeking clarification on apparent contradictions regarding weakly typed languages

I think I understand strong typing , but every time I look for examples for what is weak typing I end up finding examples of programming languages that simply coerce/convert types automatically. ...
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JavaScript exponents

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Proper REST response for empty table?

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Is it better to return null or empty collection?

That's kind of a general question (but I'm using C#), what's the best way (best practice), do you return null or empty collection for a method that has a collection as a return type ? ...
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Does the GitHub traffic graph include your own views?

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