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Why are Subjects not recommended in .NET Reactive Extensions?
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It depends on the situation. Good Rx design tends to transform the system towards an async/reactive architecture. It can be hard to cleanly integrate small components of reactive code with a system that's of imperative design. The band aid solution is to use Subjects to turn im...
What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?
... linear algebra libs, doesn't allow to express convolutions, fft and other transforms).
Almost every time a new Array has to be built from the existing one, an intermediate list of values has to be constructed (like in matrix multiplication from the Gentle Introduction). The cost of array construct...
How to get full path of a file?
...ility called realpath in coreutils 8.15.
realpath file.txt
/data/ail_data/transformed_binaries/coreutils/test_folder_realpath/file.txt
As per @styrofoam-fly and @arch-standton comments, realpath alone doesn't check for file existence, to solve this add the e argument: realpath -e file
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Check if string contains only digits
...]?\d+$/.test(value) to allow both comma and point decimal (later maybe can transform comma to point)
– Lucke
Oct 19 '17 at 23:54
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How to print a groupby object
...t of groupby is separate kind of object, a GroupBy object. You must apply, transform, or filter to get back to a DataFrame or Series.
If all you wanted to do was sort by the values in columns A, you should use df.sort('A').
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Good scalaz introduction [closed]
... Tony Morris and by Rúnar Bjarnason
State monad by Michael Pilquist
Monad transformers by Jordan West
(Copied from my answer of a closed duplicate).
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Submit HTML form on self page
...y - you can take any model you want, be it JSON, text, csv, write a simple transformer from that format to XML, write a DTD for that XML, and bam, you skip needing to write your own validator, XML already did that!
– Dmitry
Jun 19 '18 at 15:23
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Get selected text from a drop-down list (select box) using jQuery
...e Dropdown from the table, especially in ASP MVC 5
– transformer
Mar 12 '17 at 7:41
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Remove the last character from a string [duplicate]
...lues in a loop). This would indeed turn A;B;C;D; to A;B;C;D, but will also transform A;B;;; to A;B. Often one wants to preserve the delimiters between empty values, because a CSV parser could need to determine the number of fields from the string itself.
– etuardu
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How to draw border around a UILabel?
...n of masksToBounds
Using a border with a Bezier path for a layer
How to do transforms on a CALayer
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