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List changes unexpectedly after assignment. How do I clone or copy it to prevent this?

... With new_list = my_list, you don't actually have two lists. The assignment just copies the reference to the list, not the actual list, so both new_list and my_list refer to the same list after the assignment. To actually copy the list, you have various possibilit...
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How to save an HTML5 Canvas as an image on a server?

I'm working on a generative art project where I would like to allow users to save the resulting images from an algorithm. The general idea is: ...
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In where shall I use isset() and !empty()

... it's not a good idea to use this operator for math in case "0" is accidentally a string. This can be dangerous. Instead, use basic >, < and == operators and convert variables using intval() or floatval(). – kaleazy Feb 14 at 18:08 ...
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Overriding fields or properties in subclasses

...his is how a truly polymorphic implementation of your property might look, allowing the derived classes to be in control. abstract class Parent { abstract public int MyInt { get; } } class Father : Parent { public override int MyInt { get { /* Apply formula "X" and return a val...
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Getting the caller function name inside another function in Python? [duplicate]

...on 2 each frame record is a list. The third element in each record is the caller name. What you want is this: >>> import inspect >>> def f(): ... print inspect.stack()[1][3] ... >>> def g(): ... f() ... >>> g() g For Python 3.5+, each frame record i...
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Convert a Scala list to a tuple?

...e of Scala sequence using the +: syntax. Also, don't forget to add a catch-all – ig-dev Jun 19 '19 at 8:33 add a comment  |  ...
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Strip spaces/tabs/newlines - python

I am trying to remove all spaces/tabs/newlines in python 2.7 on Linux. 7 Answers 7 ...
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NUnit Test Run Order

By default nunit tests run alphabetically. Does anyone know of any way to set the execution order? Does an attribute exist for this? ...
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How to make a SPA SEO crawlable?

...-state enabled; I also use Breezejs for client-server data interaction, all of which I strongly recommend, but I'll try to give a general enough explanation that will also help people using other platforms. ...
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How to clone all remote branches in Git?

..., StackOverflow has grown quite a bit in terms of quality. This "answer" really does not address the question at all. In fact, few of the top-voted answers do. Here are two answers that will work as of git v2.28.0: https://stackoverflow.com/a/4754797/430062 https://stackoverflow.com/a/7216269/43006...