Questions tagged [evaluation-strategy]

Evaluation strategies determine how and when parts of an expression are evaluated.

What is it?

Evaluation strategies determine how and when parts of an expression are evaluated. Typical examples are eager evaluation, partial evaluation, lazy evaluation.

Related tags

Use the more specific tat lazy-evaluation when appropriate

See also:

Evaluation strategies on Wikipedia

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Infinite random sequence loops with randomIO but not with getRandom

I'm having difficulty trying to figure out a way to reason about why the following two, seemingly equivalent definitions of an infinite random number sequence (inf and inf') are evaluated completely differently: import Control.Monad.Random (Rand,…

haskell random lazy-evaluation infinite evaluation-strategy

asked May 29 '15 at 10:52

Erik Kaplun

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Evaluate a function one time and store the result in python

I wrote a static method in python which takes time to compute but I want it to compute just one time and after that return the computed value. What should I do ? here is a sample code : class Foo: @staticmethod def compute_result(): …

python static-methods evaluation-strategy

asked Jan 26 '15 at 09:08

littleali

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What does "top-level evaluation" mean?

What does "top-level evaluation" mean? This term was not defined in the text it was mentioned in. I do not want to tell the specific context, because I am interested only in generic explanations.

evaluation expression-evaluation evaluation-strategy

asked Nov 23 '13 at 12:08

user1358

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Evaluation Order for Dummies

I can't understand evaluation strategy no matter how much I read the topics. Can you explain the three evaluation orders to me with an example? I am writing a code below. Can you explain call by need(lazy evaluation), call by name (normal order…

c lazy-evaluation operator-precedence evaluation-strategy

asked Jun 18 '13 at 12:42

jason

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Call-by-name evaluation and foreach loop

I faced this problem for the first time and I can't figure it out. Let's say we have an array and a foreach loop. Something like this: var v = array(10,20,50); var i = 0 write(foo(v, v[i++])); function foo(ref int[] v, name int y){ foreach(int j…

language-agnostic parameters foreach callbyname evaluation-strategy

asked Jun 16 '13 at 16:32

joeguarino

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