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Polymorphism in C++
...onst Duck& x) { x.walk().swim().quack(); }
do_ducky_stuff(Vilified_Cygnet());
Subtype (aka inclusion) polymorphism allows you to work on new types without updating the algorithm/function, but they must be derived from the same base class (virtual dispatch)
1 - Templates are extremely flexi...
How to clear variables in ipython?
...
In: aa # returns 2
see as well %reset_selective? for more examples and https://regexone.com/ for a regex tutorial.
To erase all the variables in the namespace see:
%reset?
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MySQL stored procedure vs function, which would I use when?
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Nginx — static file serving confusion with root & alias
...t it is.
A few more places have discussed this, not conclusively though.
https://serverfault.com/questions/376162/how-can-i-create-a-location-in-nginx-that-works-with-and-without-a-trailing-slas
https://serverfault.com/questions/375602/why-is-my-nginx-alias-not-working
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Create unique constraint with null columns
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Selectors in Objective-C?
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As per apple docs:
https://developer.apple.com/library/archive/documentation/General/Conceptual/DevPedia-CocoaCore/Selector.html
A selector is the name used to select a method to execute for an object, or the unique identifier that replaces...
What can be the reasons of connection refused errors?
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In addition: when you need to acces https, but you have specified http://... this error can also occur.
– Fico
Apr 10 '15 at 7:11
4
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What is the difference between LL and LR parsing?
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MySQL: @variable vs. variable. What's the difference?
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Traverse all the Nodes of a JSON Object Tree with JavaScript
...versing JSON data with JavaScript that supports many different use cases.
https://npmjs.org/package/traverse
https://github.com/substack/js-traverse
It works with all kinds of JavaScript objects. It even detects cycles.
It provides the path of each node, too.
...