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Questions - lazy-evaluation

Is it possible to uniformly generate a random infinite bitstring lazily?

I tried to build an RNG that uniformly randomly chooses amongst 3 items. Because, the common idiom (something like C's rand() % 3) is prone to modulo bias, and thus not uniform. As per the notion of a...
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Dannyu NDos

haskell

random

infinite-loop

lazy-evaluation

state-monad

Votes: 0

Answers: 2

Latest Answer

In your code, it seems you want to work with a lazy list (or stream) of random numbers via getWordString, and then consume it in the pure function randomOrderingMap. Not an unreasonable approach to pl...
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Joachim Breitner

How to have missing() parameter also be missing in recursive call when the parameter has a default value?

My R function uses missing() to switch between two alternative ways of specifying input data. However, if the input is a factor, I want to automatically apply the function on the factor levels instead...
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akraf

r

recursion

lazy-evaluation

Votes: 0

Answers: 1

Latest Answer

You can capture the call with match.call, and substitute a for a[-1] in the call. Then instead of calling the function with arguments, use do.call, which will only supply the arguments initially put i...
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Allan Cameron

Does OCaml support call-by-name parameter passing?

Scala allows function parameters to be call-by-name using the '=>' syntax. For example, the boolean and function can be defined as: def and(x: Boolean, y: => Boolean): Boolean = if (x) y else ...
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Nicholas Weston

ocaml

lazy-evaluation

Votes: 0

Answers: 1

Latest Answer

First of all, by construction, boolean operators are lazy: # false || (print_endline "second"; true);; second - : bool = true # true || (print_endline "second"; true);; - : bool = ...
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Lhooq

Flutter: Lazy build in scrollview

I'm trying to build scrollview that has different kind of widgets like images ,text and rows. The problem is I want widgets start build (rendering) when it comes on screen not at startup.
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Mhmd Yaseen

flutter

scrollview

lazy-evaluation

Votes: 0

Answers: 1

Latest Answer

Use the ListView.builder(). List<Widget> someItems; ... ListView.builder( itemCount: someItems.length, itemBuilder: (context, index) { return someItems[index]; }, )
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MaNDOOoo

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