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Ruby: Calling class method from instance
In Ruby, how do you call a class method from one of that class's instances? Say I have
9 Answers
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How to overwrite the previous print to stdout in python?
...way of formatting strings in Python 3; the % operator is deprecated. Basically, all strings now have a format method. In this case, the {0} means "the first argument to format()" (counting starts at 0).
– Mike DeSimone
Mar 24 '11 at 22:01
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What's the difference between MemoryCache.Add and MemoryCache.Set?
I read the MSDN documentation but didn't really understand it.
1 Answer
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How to display a Yes/No dialog box on Android?
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AlertDialog.Builder really isn't that hard to use. It's a bit intimidating at first for sure, but once you've used it a bit it's both simple and powerful. I know you've said you know how to use it, but here's just a simple example anyway:
DialogI...
Why should I use Deque over Stack?
... sensible in terms of inheritance. The fact that Stack extends Vector is really strange, in my view. Early in Java, inheritance was overused IMO - Properties being another example.
For me, the crucial word in the docs you quoted is consistent. Deque exposes a set of operations which is all about be...
Determine file creation date in Java
...low ( How to get creation date of a file in Java ), but the answer isn't really there as the OP had a different need that could be solved via other mechanisms. I am trying to create a list of the files in a directory that can be sorted by age, hence the need for the file creation date.
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No submodule mapping found in .gitmodule for a path that's not a submodule
...odule mapping found in .gitmodules for path" error message.
You can check all the entries in the index which are referencing submodules:
git ls-files --stage | grep 160000
Previous answer (November 2010)
It is possible that you haven't declared your initial submodule correctly (i.e. without a...
SQL Server loop - how do I loop through a set of records
...ROM @MyCursor
INTO @MyField
END;
CLOSE @MyCursor ;
DEALLOCATE @MyCursor;
END;
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What is the string length of a GUID?
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Note: 36 is the string length with the dashes in between. They are actually 16-byte numbers.
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How to debug PDO database queries?
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I never see the final query as it's
sent to the database
Well, actually, when using prepared statements, there is no such thing as a "final query" :
First, a statement is sent to the DB, and prepared there
The database parses the query, and builds an internal representation of it
And, w...