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What does the “@” symbol mean in reference to lists in Haskell?
...the list's tail: pt
Without the @, you'd have to choose between (1) or (2):(3).
This syntax actually works for any constructor; if you have data Tree a = Tree a [Tree a], then t@(Tree _ kids) gives you access to both the tree and its children.
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What's a quick way to comment/uncomment lines in Vim?
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Notepad++: How to automatically set Language as Xml when load files
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answered Feb 2 '12 at 20:45
ErikestErikest
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How to create a listbox in HTML without allowing multiple selection?
...ext" size="5">
<option>text1</option>
<option>text2</option>
<option>text3</option>
<option>text4</option>
<option>text5</option>
</select>
To clarify, adding the size attribute did not remove the multiple selection.
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Mongoose subdocuments vs nested schema
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered May 11 '13 at 4:53
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Which is the correct shorthand - “regex” or “regexp” [closed]
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edited Apr 17 '12 at 14:42
Tim Cooper
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Mongoose.js: Find user by username LIKE value
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edited Aug 14 at 21:08
Gabe
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answered Mar 29 '12 at 19:5...
How to specify the default error page in web.xml?
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241
On Servlet 3.0 or newer you could just specify
<web-app ...>
<error-page>
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What do people think of the fossil DVCS? [closed]
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Mr. Millikin, if you will take a few moments to review some of the documentation on fossil, I th...
Location of parenthesis for auto-executing anonymous JavaScript functions?
I was recently comparing the current version of json2.js with the version I had in my project and noticed a difference in how the function expression was created and self executed.
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