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Difference between Select and ConvertAll in C#
...e ConvertAll method exists since .NET 2.0 whereas LINQ was introduced with 3.5.
You should favor Select over ConvertAll as it works for any kind of list, but they do the same basically.
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How to update SQLAlchemy row entry?
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user.no_of_logins += 1
session.commit()
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How can I use map and receive an index as well in Scala?
...ipWithIndex.foreach{ case (e, i) => println(i+" "+e) }
0 Mary
1 had
2 a
3 little
4 lamb
From: http://www.artima.com/forums/flat.jsp?forum=283&thread=243570
You also have variations like:
for((e,i) <- List("Mary", "had", "a", "little", "lamb").zipWithIndex) println(i+" "+e)
or:
List...
How to print Unicode character in Python?
...Python source code, you can use Unicode escape characters in the form \u0123 in your string, and prefix the string literal with 'u'.
Here's an example running in the Python interactive console:
>>> print u'\u0420\u043e\u0441\u0441\u0438\u044f'
Россия
Strings declared like this are...
What is the zero for string?
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edited May 6 '13 at 11:41
answered Oct 3 '12 at 6:51
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What does the “@” symbol mean in reference to lists in Haskell?
...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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Notepad++: How to automatically set Language as Xml when load files
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How to create a listbox in HTML without allowing multiple selection?
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How exactly does the “Specific Version” property of an assembly reference work in Visual Studio?
...e resolution process fails. This results in a compiler warning (warning MSB3245) that tells you that the reference could not be resolved.
Interestingly enough, the build then continues! If the code has no actual references to the assembly, the build succeeds (with the previously mentioned warning). ...