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How to use java.String.format in Scala?

...ethod of a string. But if I place %1, %2, etc. in the string, java.util.UnknownFormatConversionException is thrown pointing to a confusing Java source code piece: ...
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In Python, how do you convert a `datetime` object to seconds?

... Python now warns me: "TypeError: can't subtract offset-naive and offset-aware datetimes" What's the best solution to fix that? – Aaron Ash Apr 13 '13 at 0:47 ...
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What is unit testing? [closed]

...er way to look at unit testing is that you write the tests first. This is known as Test-Driven Development (TDD for short). TDD brings additional advantages: You don't write speculative "I might need this in the future" code -- just enough to make the tests pass The code you've written is always c...
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What does character set and collation mean exactly?

...ation of all four letters and their encodings is a character set. Now, suppose that we want to compare two string values, 'A' and 'B'. The simplest way to do this is to look at the encodings: 0 for 'A' and 1 for 'B'. Because 0 is less than 1, we say 'A' is less than 'B'. Now, what...
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Proper use of the IDisposable interface

I know from reading the Microsoft documentation that the "primary" use of the IDisposable interface is to clean up unmanaged resources. ...
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'git add --patch' to include new files?

...vert 4: add untracked 5: patch 6: diff 7: quit 8: help What now> a 1: another-new.java 2: new.java Add untracked>> 2 1: another-new.java * 2: new.java Add untracked>> added one path *** Commands *** 1: status 2: update 3: revert 4: add untracked 5: pat...
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What does the `forall` keyword in Haskell/GHC do?

... OK, I got my six hours and can now decode your answer. :) Between you and Norman I got exactly the kind of answer I was looking for. Thanks. – JUST MY correct OPINION Jun 19 '10 at 0:37 ...
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How to get an enum which is created in attrs.xml in code

... it here ) with an declare-styleable attribute of type enum. In xml I can now choose one of the enum entries for my custom attribute. Now I want to create an method to set this value programmatically, but I can not access the enum. ...
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Storing images in SQL Server?

...inning, or add an additional filegroup later. Let's call it "LARGE_DATA". Now, whenever you have a new table to create which needs to store VARCHAR(MAX) or VARBINARY(MAX) columns, you can specify this file group for the large data: CREATE TABLE dbo.YourTable (....... define the fields here ....
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Explain the concept of a stack frame in a nutshell

...he "frame," although this is likely architecture-dependent. The processor knows how many bytes are in each frame and moves the stack pointer accordingly as frames are pushed and popped off the stack. EDIT: There is a big difference between higher-level call stacks and the processor's call stack. ...