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How do I save and restore multiple variables in python?
I need to save about a dozen objects to a file and then restore them later.
I've tried to use a for loop with pickle and shelve but it didn't work right.
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Simple basic explanation of a Distributed Hash Table (DHT)
...e now independent nodes in a network.
This gives a lot of fault-tolerance and reliability, and possibly some performance benefit, but it also throws up a lot of headaches. For example, what happens when a node leaves the network, by failing or otherwise? And how do you redistribute keys when a node...
Set focus on textbox in WPF
... Focused element is readonly right How can you set in xaml? I used this and it did not work <Style.Triggers> <Trigger Property="Validation.HasError" Value="True"> <Setter Property="FocusManager.FocusedEleme...
Ruby's ||= (or equals) in JavaScript?
...s ||= mechanism. If a variable doesn't exist or is nil , then create it and set it equal to something:
6 Answers
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What is the reason for having '//' in Python? [duplicate]
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In Python 3, they made the / operator do a floating-point division, and added the // operator to do integer division (i.e. quotient without remainder); whereas in Python 2, the / operator was simply integer division, unless one of the operands was already a floating point number.
In Python 2...
Definition of a Balanced Tree
... tree for me. I have that "a tree is balanced if each sub-tree is balanced and the height of the two sub-trees differ by at most one.
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Is there an equivalent to CTRL+C in IPython Notebook in Firefox to break cells that are running?
I've started to use the IPython Notebook and am enjoying it. Sometimes, I write buggy code that takes massive memory requirements or has an infinite loop. I find the "interrupt kernel" option sluggish or unreliable, and sometimes I have to restart the kernel, losing everything in memory.
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window.location.href and window.open () methods in JavaScript
What is the difference between window.location.href and window.open () methods in JavaScript?
6 Answers
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Uniq by object attribute in Ruby
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This is the correct answer for ruby 1.9 and later versions.
– nurettin
Dec 15 '12 at 7:06
2
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Do NSUserDefaults persist through an Update to an app in the Appstore?
...such as preferences, dates, strings etc. If you are looking to save images and files, the file system is a better bet.
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