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Since functions and function values can be defined at any scope level, this means they can access variables from enclosing scopes, called free variables. Free variables are essential to make Lobster's higher order functions convenient.
Lobster's free variables ensure that your code keeps doing what it did before it was moved without needing to create tons of function arguments. They allow your new functionality to be as local as possible, and look just as terse as any built-in abstractions when using function value arguments.
blocks/functions may refer to “free variables”, i.e. variables declared outside of their own scope, like r. This is essential to utilize the full potential of blocks. i will contain 2 at the end of this (the index of element 3). It does not clash with the other i because of lexical scoping.
Lobster is a statically typed programming language with a Python-esque syntax that combines the advantages of an expressive type system and compile-time memory management with a very lightweight, friendly and terse syntax, by doing most of the heavy lifting for you.
Lobster's Memory Management Strategy. This has two parts, its by-value model and ownership analysis. In-line, by-value structs. The best memory management is.. not to have to manage it at all! You can make an incredibly fast memory manager, but it will never beat simply having less objects to manage.
In computer programming, the term free variable refers to variables used in a function that are neither local variables nor parameters of that function. The term non-local variable is often a synonym in this context.
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Feb 18, 2014 · A free variable is a variable used in some function that its value depends on the context where the function is invoked, called or used. For example, in math terms, z is a free variable because is not bounded to any parameter.
