Top "Racket" questions

How to make a GUI using Lisp: DrScheme or Common Lisp

Or the basic work need to do to create a GUI. I know the basic Components of GUI, but where …

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How to turn a list of string into one string in scheme?

For example I have (list "a" "1" "b" "2" "c" "3"). Now I want to turn this list into one "a1b2c3". …

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String split function

I am just wondering if there is the string split function? Something like: > (string-split "19 2.14 + 4.5 2 4.3 / - *") '("19" "2.14" "+" "4.5" "2" "4.3" "/" "-" "*") I haven't …

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How to do a powerset in DrRacket?

I'm using the beginning language with list abbreviations for DrRacket and want to make a powerset recursively but cannot figure …

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Lambda in Racket Explained

I am trying to understand lambda use in racket and I am still unclear. I get that they are unnamed (…

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Increment and Decrement operators in scheme programming language

What are the increment and decrement operators in scheme programming language. I am using "Dr.Racket" and it is not …

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Why is foldl defined in a strange way in Racket?

In Haskell, like in many other functional languages, the function foldl is defined such that, for example, foldl (-) 0 [1,2,3,4] = -10. …

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Cartesian product in Scheme

I've been trying to do a function that returns the Cartesian Product of n sets,in Dr Scheme,the sets …

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What happens in a Scheme 'cond' clause when the 'else' is omitted?

I'm in the process of learning Scheme. I recently spent (too much!) time trying to find a bug in a …

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Error with define in Racket

I just discovered Racket a few days ago, and I'm trying to get more comfortable with it by writing a …

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