scope Archives - IT Nursery

Static variables in member functions

Can someone please explain how static variables in member functions work in C++. Given the following class: class A { void foo() { … Read more

var self = this?

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Using instance methods as callbacks for event handlers changes the scope of this from “My instance” to “Whatever just called the callback”. So … Read more

What is the difference between ‘my’ and ‘our’ in Perl?

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I know what my is in Perl. It defines a variable that exists only in the scope of the block in which it … Read more

Why does this UnboundLocalError occur (closure)? [duplicate]

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This question already has answers here: How can I change a global variable from within a function? (8 answers) Using global variables in … Read more

Access a variable outside the scope of a Handlebars.js each loop

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I have a handlebars.js template, just like this: {{externalValue}} <select name=”test”> {{#each myCollection}} <option value=”{{id}}”>{{title}} {{externalValue}}</option> {{/each}} </select> And this is the generated … Read more

Is it possible to define more than one function per file in MATLAB, and access them from outside that file?

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When I was studying for my undergraduate degree in EE, MATLAB required each function to be defined in its own file, even if … Read more

Scoping in Python ‘for’ loops

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I’m not asking about Python’s scoping rules; I understand generally how scoping works in Python for loops. My question is why the design … Read more

How do I pass the this context to a function?

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I thought this would be something I could easily google, but maybe I’m not asking the right question… How do I set whatever … Read more

Can I access variables from another file?

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Is it possible to use a variable in a file called first.js inside another file called second.js? first.js contains a variable called colorcodes. … Read more