Scheme/Procedures

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(Created page with '== Lambdas == * Can also be viewed as anonymous procedures. * Has the following syntax: <pre>(lambda <args> <expressions>)</pre> where <expressions> is one or more, well, express…')
 
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* '''(var[1] var[2] ... )''' - specifies a fixed number of arguments.
 
* '''(var[1] var[2] ... )''' - specifies a fixed number of arguments.
 
* '''(var[1] var[2] ... . var[n])''' - a space-delimited period before the final argument specifies the remaining args (if any) to be put into a list under that variable.
 
* '''(var[1] var[2] ... . var[n])''' - a space-delimited period before the final argument specifies the remaining args (if any) to be put into a list under that variable.
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== Lexical Scoping ==
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=== fluid-let ===
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Modifies ''existing global variables'' instead of introducing new lexical ones. Values are reset at the end of the expression.

Revision as of 22:07, 2 April 2011

Lambdas

  • Can also be viewed as anonymous procedures.
  • Has the following syntax:
(lambda <args> <expressions>)

where <expressions> is one or more, well, expressions. Only the last expression's value is returned.
<args> is your variable definitions, which can take the following forms:

  • var - all arguments are put into this single variable.
  • (var[1] var[2] ... ) - specifies a fixed number of arguments.
  • (var[1] var[2] ... . var[n]) - a space-delimited period before the final argument specifies the remaining args (if any) to be put into a list under that variable.

Lexical Scoping

fluid-let

Modifies existing global variables instead of introducing new lexical ones. Values are reset at the end of the expression.

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