Scala Documentation
docs.scala-lang.org › overviews › scala-book › for-loops.html
for Loops | Scala Book | Scala Documentation
In its most simple use, a Scala for loop can be used to iterate over the elements in a collection.
GeeksforGeeks
geeksforgeeks.org › scala › for-loop-in-scala
For Loop in Scala - GeeksforGeeks
July 20, 2021 - In for loop, We can use until when We want to print the value from 0 to n-1. Or in other words, until with for loop it excludes the end value like as shown in the below program, it prints only from 0 to 9 not print from 0 to 10. ... // Scala program to illustrate how to // create for loop using until object Main { def main(args: Array[String]) { println("The value of w is:"); // Here, the for loop starts from 0 // and ends at 10 for( w <- 0 until 10) { println(w); } } }
For loop in scala without sequence? - Stack Overflow
So, while working my way through "Scala for the Impatient" I found myself wondering: Can you use a Scala for loop without a sequence? For example, there is an exercise in the book that asks you to More on stackoverflow.com
Out of the loop for a couple of years, what's changed?
I'd say it on the plateau of productivity - that is whoever needs Scala already knows about it, who was only for a hype already left - Li Haoyi have a post about it . Spark crowd moves to PySpark. It's hard to convince data scientists to learn Scala if all their other tools are in Python, and if there is Spark in Python it's a slow process, most blockers were removed, some rather recently (Akka Http and Pekko Http) and only now some companies start checking what needs to happen to migrate (I guess it's mostly about order of updating the dependencies so that macros would still work) for the job offers I saw virtually all backend jobs are Cats OR ZIO with possible Akka (now with Pekko). I wouldn't say that culture wars are over as much as some people stopped talking to some other people. But 2 separate ecosystems stay and keep on competing Additionally: scala-cli became a thing a lowered an entry bar Pekko happened since Lightbend moved all of their code to BSL I hope that Besom once it go public will become a reason to use Scala for infrastructure More on reddit.com
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August 27, 2023Strange Loop 2022 - Call for Presentations - Scala talks welcome!
We've had some great Scala talks over the years at Strange Loop (https://www.youtube.com/playlist?list=PLcGKfGEEONaBRUxzHaRF8MobumfYAXwwe) and would be happy to see some proposals. This year's conference is Sept 22-24 in St. Louis and speakers receive hotel, travel, and a stipend.
More on reddit.com 2
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March 15, 2022Fast C-style for loops in Scala 3
This has always been my biggest core problem with Scala. We are at a point where I think the compiler should infer when inlining is possible for basic loops. What's the point of syntactic sugar if we can't abstract these easy wins? I love that the feature is there but I wish it didn't have to be explicit in use. More on reddit.com
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September 21, 2021What is Scala programming language?
Scala is a general-purpose programming language designed to express common programming patterns in a concise, elegant, and type-safe way. It is a hybrid functional and object-oriented language, supports functional programming constructs such as higher-order functions and lazy evaluation, but it also has features of an object-oriented language such as classes, object literals, and type inference. Scala is one of the most prominent languages designed for the Java Virtual Machine (JVM), but can also be compiled to JavaScript source code or use the .NET Common Language Runtime (CLR).
upgrad.com
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Scala For Loop | For Loop in Scala: Explained | upGrad blog
What is the future of Scala language?
Scala is a general-purpose programming language that incorporates functional programming principles. It is platform independent. Scala is a statically typed language with type inference. It also allows the code to be written in an object-oriented style. Scala has rich libraries and it is conciseness in coding. These factors make Scala a very popular programming language. If you are a java programmer, then you can use Scala more easily. If you are not a Java programmer and still want to use Scala, then you can use the Scala interpreter system. Scala has a fast-growing community and getting to t
upgrad.com
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Scala For Loop | For Loop in Scala: Explained | upGrad blog
What are loops in programming?
Loops are programming statements that repeat a block of statements another number of times (an integer number). There are two types of loops — for and while. A loop repeats a block of code until a certain condition is filled. You can use a loop to perform the same task over and over again until the specified criteria is filled. There are several types of loops such as – for loop, while loop, do while loop, and foreach loop. Each of these types have their own advantages and use-cases. For example, if you want to loop through an array for a fixed number of times, you can use for loops. If you wa
upgrad.com
upgrad.com › home › blog › software development › scala for loop | for loop in scala: explained
Scala For Loop | For Loop in Scala: Explained | upGrad blog
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23: ‘for’ Loops (Introduction to Scala 3) - YouTube
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This Doesn't Make Sense - Scala Loops - YouTube
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Scala Tutorial 9 - Scala For Loop - YouTube
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for Loop in Scala - YouTube
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Scala - For Loop - YouTube
Scala Tutorial #5 Loops (Part-1) || Scala for beginners || Scala ...
Baeldung
baeldung.com › home › scala syntax › for loops in scala
For Loops in Scala | Baeldung on Scala
March 18, 2024 - While in Java we’re forced to write nested loops, at the same time in Scala we can use only one for with multiple generators.
TutorialsPoint
tutorialspoint.com › scala › scala_for_loop.htm
Scala - for Loop
Scala's for loop allows to filter out some elements using one or more if statement(s). Following is the syntax of for loop along with filters.
Alvin Alexander
alvinalexander.com › scala › scala-for-loop-examples-syntax-yield-foreach
Scala 'for loop' examples and syntax
This page is a work in progress, and as of tonight I haven’t tested some of the examples, but ... if you’re looking for some Scala for loop examples — technically called a for-comprehension or for-expression — I hope these examples are helpful.
DataFlair
data-flair.training › blogs › scala-for-loop
Scala for loop - Types, Syntax and Example of For loop - DataFlair
December 4, 2021 - Scala for loop: Learn for loops in Scala, Types of Scala for-loop, i to j, i until j, Using Multiple Ranges in Scala for loop with syntax & examples
Dot Net Perls
dotnetperls.com › for-scala
Scala - for Loop Examples - Dot Net Perls
In Scala programs, we often act upon values in a List. We can loop over these elements with the for-keyword to act upon individual elements.
Javatpoint
javatpoint.com › scala-for-loop
Scala for Loop - javatpoint
Scala for Loop for beginners and professionals with examples on oops concepts, constructors, method overloading, this keyword, inheritance, final, collection, string, exception, trait, tuple, multithreading, file handling, case classes and more.
EDUCBA
educba.com › home › software development › software development tutorials › scala tutorial › scala for loop
Scala for Loop | Top 6 Examples to Implement Scala for Loop
April 4, 2023 - As seen in the example we can add multiple filters to the for loop. This is one of the primary primitive that one can use to iterate over items in Scala.
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Upgrad
upgrad.com › home › blog › software development › scala for loop | for loop in scala: explained
Scala For Loop | For Loop in Scala: Explained | upGrad blog
July 3, 2023 - In the for-loop example illustrated below, we can use until to print values between 0 to n-1. In other words, the loop starts at 0 and ends at n-1, which comes out to 9. So, we can print page numbers 0 to 9. // Scala program to illustrate how to // create for loop using until object Main { def main(args: Array[String]) { println(“The value of w is:”); // Here, the for loop starts from 0 // and ends at 10 for( w <- 0 until 10) { println(w); } } }
CodeSignal
codesignal.com › learn › courses › iterations-and-loops-in-scala › lessons › mastering-scala-for-loops-a-comprehensive-guide
Mastering Scala For Loops: A Comprehensive Guide
// Loop over a range of numbers for (i <- 1 to 3) { val innerValue = "hello" // Declare a variable in the loop } println(innerValue) // Error! innerValue is out of the scope · Our innerValue is scoped inside the loop, so trying to print it outside will result in an error. ... In Scala, single-statement iterations of loops can be written in a concise form without the use of braces ({}).
Top answer 1 of 4
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In fact, 0 to N does not actually populate anything with integers from 0 to N. It instead creates an instance of scala.collection.immutable.Range, which applies its methods to all the integers generated on the fly.
The error you ran into is only because you have to be able to fit the number of elements (whether they actually exist or not) into the positive part of an Int in order to maintain the contract for the length method. 1 to Int.MaxValue works fine, as does 0 until Int.MaxValue. And the latter is what your while loop is doing anyway (to includes the right endpoint, until omits it).
Anyway, since the Scala for is a very different (much more generic) creature than the C for, the short answer is no, you can't do exactly the same thing. But you can probably do what you want with for (though maybe not as fast as you want, since there is some performance penalty).
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Wow, some nice technical answers for a simple question (which is good!) But in case anyone is just looking for a simple answer:
//start from 0, stop at 9 inclusive
for (i <- 0 until 10){
println("Hi " + i)
}
//or start from 0, stop at 9 inclusive
for (i <- 0 to 9){
println("Hi " + i)
}
As Rex pointed out, "to" includes the right endpoint, "until" omits it.
Scala Documentation
docs.scala-lang.org › scala3 › book › control-structures.html
Control Structures | Scala 3 — Book | Scala Documentation
In its most simple use, a Scala for loop can be used to iterate over the elements in a collection.
Medium
medium.com › my-random-thoughts-in-software-engineering › for-loop-and-for-comprehension-in-scala-f1a2a63a9c47
For-loop and for-comprehension in Scala | by Wei Xia | Wei Xia | Medium
July 23, 2021 - Technically there is no for-loop statement in Scala.
Waiting for Code
waitingforcode.com › home › scala core
Scala and for loop on waitingforcode.com - Scala core blog posts
August 23, 2018 - The last section mentions recursion that can be used instead of for loops. Scala's for loop definition is very similar to a foreach loop because it clearly suggests the iteration over a collection of items.
IncludeHelp
includehelp.com › scala › the-for-loop-in-scala.aspx
The for loop in Scala
October 10, 2024 - Scala Misc. Topics ... for loop in Scala is used to execute a block of code multiple numbers of times. It executes the block n number of times where n is specified by some integer initialized before the start of the loop.
TutorialKart
tutorialkart.com › scala › scala-for-loop
Scala For Loop
December 1, 2020 - In this example, we take a range of 1 to 4 i.e., [1, 4] and execute a print statement for each of the elements in the range using for loop. example.scala · </> Copy · object ForLoopExample { def main(args: Array[String]) { var a = 0 // for loop over a range for( a <- 1 to 4){ println( "a: " + a ) } } } Output ·
Alvin Alexander
alvinalexander.com › scala › scala-for-loop-syntax-examples-yield-guards
Scala for loop syntax examples (including yield and guards) | alvinalexander.com
You can also create Scala for loops with embedded if statements, or guards.
AlphaCodingSkills
alphacodingskills.com › scala › scala-for-loop.php
Scala For Loop - AlphaCodingSkills
object MainObject { def main(args: Array[String]) { var i = 0 val MyList = List(100, 200, 300, 400, 500) //for loop over a list for(i <- MyList){ println("i = " + i) } } } ... Scala's for loop allows to filter out some elements by using if condition(s) with it.
Alvin Alexander
alvinalexander.com › scala › iterating-scala-lists-foreach-for-comprehension
How to iterate over Scala lists with foreach and for | alvinalexander.com
The Scala for comprehension is not specific to lists, but is an extremely powerful way to operate on a List and other sequences. Here's a simple example of how to iterate over a sequence using the for comprehension (also known as a “for loop”):