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Covariance and contravariance real world example
...iantly as a mammal hat…
IHat<Mammal> mHat = rHat; // Compiler error
// …because…
mHat.hide(new Dolphin()); // Hide a dolphin in a rabbit hat??
// It also cannot be treated contravariantly as a cottontail hat…
IHat<CottonTail> cHat = rHat; // Compiler error
// …becau...
How to jump directly to a column number in Vim
...ave to do the exciting job of wading through minified javascript code. The lines are upto 600 columns wide. The exception reporting library is kind enough to provide me the exact crash coordinates in the form of line number and column number. However I can't find a way to directly jump to the column...
HTTP vs HTTPS performance
...a link?
– Jim Wolff
Nov 1 '13 at 13:05
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Batch files - number of command line arguments
...nts which may contain quotes and was an overlooked leftover from trial-and-error phase) but was since fixed to how it is now.
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How to specify a multi-line shell variable?
...quotes.
– tripleee
Jan 13 '16 at 10:05
Not sure why you want or need the leading line break. For my application I did...
Why is it important to override GetHashCode when Equals method is overridden?
Given the following class
14 Answers
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Hidden features of Scala
What are the hidden features of Scala that every Scala developer should be aware of?
28 Answers
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How do I reload .bashrc without logging out and back in?
...oad, but . ~/.bashrc will execute in dash rather than bash, so there is an error because shopt is missing. source isn't found from the shell, so that solution is out as well. I tried this and the docker image built smoothly!
– m59
Jun 2 '15 at 2:11
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What is the difference between svg's x and dx attribute?
... is the difference between svg's x and dx attribute (or y and dy)? When would be a proper time to use the axis shift attribute (dx) versus the location attribute (x)?
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How do I check if an integer is even or odd? [closed]
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