On top of that, Frank is also right: for many problems that are not "naturally" loops, other approaches are a lot faster because they're already optimized inside of specialized functions, or because Table will be able to compile or pack something behind the scenes when Do for some reason can't. Sometimes your problem really is a loop, but maybe it's more like a matrix multiplication or a rearranging of lists or strings, and it just seems unnecessary to re-formulate the problem into a loop structure.
Now we all know there's no guarantee that that would be the most efficient implementation, but it's certainly the one that's fastest to write. That means you can usually find a solution where the code has the same structure as the problem itself. Ideology aside, the core of that allergy is that there are so many different approaches available that you can solve a given problem in a variety of ways. I realize that a lot of Mathematica users are allergic to loop constructs, and I know that seems strange (borderline infuriating) to anyone who is used to other programming languages.
Here's a Stackexchange question on the topic (item 1.4 in the accepted answer briefly addresses loop constructs), and then here's a Wolfram Blog post on the topic in the same general direction. Other functions also have parallel versions, like ParallelDo.Īlso, I know you said that speed isn't your primary concern, but just in case you're interested. You should definitely take a look at the different varieties of Map in the Documentation, and there's also ParallelMap since you mentioned parallelization. even these not-so-straight-forward solutions are faster than Do-Append: AbsoluteTiming],#<10^6&] ]ĪbsoluteTiming,PrimeQ]] ]ĪbsoluteTiming Reap ii=NextPrime ]]] ] Even if this could be converted into a functional list to be printed after, I'd rather have something that can print as it finds applicable graphs. Mathematica states that it has full procedural potential, but it does not have the ForEach loop, which makes it much more difficult to operate (do more than one function/action on) each element in some given loop. Below, you can see that I converted one of my loops into a Select, but I have two more nested ones. However, I need to be able to grab each element by name into a variable so that I can use it just like in a ForEach loop. I know that Select is some sort of Mathematica function that works with lists. Finance, Statistics & Business Analysis.Wolfram Knowledgebase Curated computable knowledge powering Wolfram|Alpha. Wolfram Universal Deployment System Instant deployment across cloud, desktop, mobile, and more. Wolfram Data Framework Semantic framework for real-world data.
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