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Scala list concatenation, ::: vs ++
Is there any difference between ::: and ++ for concatenating lists in Scala?
4 Answers
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File content into unix variable with newlines
... newlines are replaced with spaces is not entirely to do with the echo command, rather it's a combination of things.
When given a command line, bash splits it into words according to the documentation for the IFS variable:
IFS: The Internal Field Separator that is used for word splitting after ...
Raise warning in Python without interrupting program
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Thank you very much. And how then do I test that the Warning has been thrown using unittest? I cannot use assertRaises() anymore.
– Tomas Novotny
Oct 8 '10 at 15:14
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How to invert a grep expression
The following grep expression successfully lists all the .exe and .html files in the current directory and sub directories.
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Initialize a long in Java
...u do any operation of byte with any integer, byte is first promoted to int and then any operations are performed.
Try this
byte a = 1; // declare a byte
a = a*2; // you will get error here
You get error because 2 is by default int.
Hence you are trying to multiply byte with int.
Hence result ...
How to set the maxAllowedContentLength to 500MB while running on IIS7?
... answered Oct 17 '16 at 11:41
Anderson RissardiAnderson Rissardi
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Why can I create a class named “var”?
...rd, so from the context the compiler is able to decide which is your class and which is the contextual keyword, and no confusion arises.
a contextual keyword is:
used to provide a specific meaning in the code, but it is not a
reserved word in C#.
so as its not reserved you can use it.
As p...
How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
..., add the annotation (this will add an extra field to the returned values) and finally, you order them by this value
Refer to https://docs.djangoproject.com/en/dev/topics/db/aggregation/ for more insight
Good to note: if using Count, the value passed to Count does not affect the aggregation, just th...
LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface
... Perfect, it's great being able to perform Interface-based queries and still maintain the collection as IQueryable. A bit annoying however that there is basically no way of thinking up this fix, without knowing the inner workings of EF.
– Anders
Dec 9 '...
Webrick as production server vs. Thin or Unicorn?
... workers (in particular, pre-forking, life cycle management, asynchronous handling, etc), redirects, rewriting, etc
When I mention redirects/rewrites, I'm referring to the fact that using Webrick, you have to handle rewrites at a different layer (Rack, Sinatra, Rails, custom Webrick code, etc). Th...