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Array slices in C#
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Note that only single dimensional and jagged arrays are enumerable, multi dimensional arrays are not.
– Abel
Apr 8 '10 at 9:11
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Prevent row names to be written to file when using write.csv
Commands:
2 Answers
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generate model using user:references vs user_id:integer
..._id: integer, created_at: datetime, updated_at: datetime)
The second command adds a belongs_to :user relationship in your Micropost model whereas the first does not. When this relationship is specified, ActiveRecord will assume that the foreign key is kept in the user_id column and it will use a ...
How to find all the tables in MySQL with specific column names in them?
I have 2-3 different column names that I want to look up in the entire DB and list out all tables which have those columns. Any easy script?
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How do I turn a C# object into a JSON string in .NET?
... Their wording is very odd as well: "Json.NET should be used serialization and deserialization. Provides serialization and deserialization functionality for AJAX-enabled applications."
– Protector one
Mar 17 '17 at 9:53
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Initializing IEnumerable In C#
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IEnumerable is just an interface and so can't be instantiated directly.
You need to create a concrete class (like a List)
IEnumerable<string> m_oEnum = new List<string>() { "1", "2", "3" };
you can then pass this to anything expecting an IEnu...
What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
I am transitioning from Java to C++ and have some questions about the long data type. In Java, to hold an integer greater than 2 32 , you would simply write long x; . However, in C++, it seems that long is both a data type and a modifier.
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Does Python optimize tail recursion?
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No, and it never will since Guido van Rossum prefers to be able to have proper tracebacks:
Tail Recursion Elimination (2009-04-22)
Final Words on Tail Calls (2009-04-27)
You can manually eliminate the recursion with a transfor...
How do I write a short literal in C++?
...ictly a short literal, more of a casted-int, but the behaviour is the same and I think there isn't a direct way of doing it.
That's what I've been doing because I couldn't find anything about it. I would guess that the compiler would be smart enough to compile this as if it's a short literal (i....
Is there a way to 'uniq' by column?
...eed the ,1 in -k1,1? why not just -k1?
– hello_there_andy
Nov 24 '14 at 20:10
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@hello_there_and...