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Implementing slicing in __getitem__

...y) and my __getitem__ looks like this: def __getitem__( self, key ) : if isinstance( key, slice ) : #Get the start, stop, and step from the slice return [self[ii] for ii in xrange(*key.indices(len(self)))] elif isinstance( key, int ) : if key < 0 : #Handle negativ...
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Python - When to use file vs open

...he moment. They've had a sort of strange relationship, but file() is going now, so there's no need to worry anymore. The following is from the Python 2.6 docs. [bracket stuff] added by me. When opening a file, it’s preferable to use open() instead of invoking this [file()] constructor directl...
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Explain Morris inorder tree traversal without using stacks or recursion

...sal. So X is made the right child of B, then current is set to Y. The tree now looks like this: Y / \ A B \ X / \ (Y) Z / \ C D (Y) above refers to Y and all of its children, which are omitted for recursion issues. The important part is li...
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Can you attach Amazon EBS to multiple instances?

... For anyone else who sees this answer know that Amazon has just released EFS which allows for shared auto-expanding drives that can be mounted over NFS on multiple instances. – JoshStrange Apr 9 '15 at 22:02 ...
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How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor? [duplicate]

If there's some cross-platform C/C++ code that should be compiled on Mac OS X, iOS, Linux, Windows, how can I detect them reliably during preprocessor process? ...
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Remove first element from $@ in bash [duplicate]

... Exactly what I wanted. Now don't need temp variable for dereferencing first argument in "${!1}${@:2}" – Charlie Gorichanaz Mar 27 '17 at 22:59 ...
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iOS app error - Can't add self as subview

I received this crash report, but I don't know how to debug it. 19 Answers 19 ...
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How to do a https request with bad certificate?

...milar but actually completely ignores the certificate check. You need to know that the certificate is valid and signed by a cert that you trust. But in common scenarios, you know that the CN won't match the hostname you connected with. For those, set ServerName on tls.Config. If tls.Config.Serve...
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Entity Framework 6 Code first Default value

...SET", and NOT the defaultValue as this defaultValue: System.DateTimeOffset.Now, will resolve to a string of the current system datetimeoffset value. – OzBob Apr 15 '16 at 6:53 ...
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How to view files in binary from bash?

... sudo xxd /dev/diskn | less is now my new favorite thing. – krs013 Jan 30 '15 at 18:39 7 ...