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What does “coalgebra” mean in the context of programming?
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This lets us talk about algebras as a type τ with a single function from some mess of Eithers to a single τ. For monoids, this mess is: Either (τ, τ) (); for groups (which have an extra τ → τ operation), it's: Either (Either (τ, τ) τ) (). It's a different type for every different stru...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...an *. Specifically:
$@ "[e]xpands to the positional parameters, starting from one. When the expansion occurs within double quotes, each parameter expands to a separate word."
In an array, "[i]f the word is double-quoted, ${name[*]} expands to a single word with the value of each array member separ...
Android: How to handle right to left swipe gestures
I want my app to recognize when a user swipes from right to left on the phone screen.
21 Answers
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Using node-inspector with Grunt tasks
...uary 2015
On Windows, things are a touch more complicated. See the answer from @e.gluhotorenko for instructions.
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How to create a function in a cshtml template?
...IHtmlString, which take care of HTML encoding for you and protect your app from XSS attacks. Helpers also give you the convenience of Razor syntax in the helper itself, which you lose with functions. In other words, <p>Welcome, @username.</p> versus return new HtmlString("<p>Welcom...
What is a StackOverflowError?
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No, stack overflows can also come from variables being too big to allocate on the stack if you look up the Wikipedia article on it at en.wikipedia.org/wiki/Stack_overflow .
– JB King
Nov 4 '08 at 23:30
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Compare object instances for equality by their attributes
...f __lt__(), __le__(), __gt__(), or __ge__() is needed in addition to that. From that, Python can infer the other methods. See functools for more information.
– kba
Nov 19 '13 at 1:42
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RelativeLayout is taking fullscreen for wrap_content
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From the RelativeLayout doc:
Class Overview
A Layout where the positions of the children can be described in relation to each other or to the parent.
Note that you cannot have a circular dependency between the size of the Re...
Detail change after Git pull
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@Jefromi fatal: ambiguous argument 'firstDesign@': unknown revision or path not in the working tree. I keep getting this error. Although git reflog firstDesign has this output.
– unrealsoul007
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Case insensitive access for generic dictionary
...ou know you won't get collisions then you may as well use case insensitive from the start.
– Rhys Bevilaqua
Jun 20 '13 at 3:44
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