simple scala command line options parsing
- Repository at GitHub: https://github.com/scopt/scopt
Questions tagged [scopt]
29 questions
6
votes
2 answers
NoClassDefFoundError while using scopt OptionParser with Spark
I am using Apache Spark version 1.2.1 and Scala version 2.10.4. I am trying to get the example MovieLensALS working. However, I am running into errors with scopt library which is a requirement in the code. Any help would be appreciated.
My…
krishnang
- 698
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5
votes
1 answer
Extending Scopt OptionParser in Scala
I'm trying to have a base option parser with some default parameters.
In other projects i would like to extend the option parser with other parameters.
Something like:
case class Config(foo: String = null)
trait DefaultParser { self:…
Udy
- 2,492
- 4
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5
votes
1 answer
Scala option parsing with scopt
Using scopt https://github.com/scopt/scopt
I have a very simple Scala CLI driver that errors out on the first line of .parse. The line is var i = 0, can’t imagine why that would fail, maybe in how i instantiated the OptionParser?
def parse(args:…
pferrel
- 5,673
- 5
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3
votes
1 answer
scopt "not found: value" defining val with same name
For the following use of scopt:
import java.io.File
object Application extends App {
case class Config(in: File = new File("."), out: File = new File("."), scripts: Seq[File] = Seq())
val parser = new scopt.OptionParser[Config]("scopt") {
…
Jim
- 1,040
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3
votes
2 answers
How can I disable Scopt's "Unknown options" exception?
I have a base Config case class which is used as a common part of the Configs of several different scripts. I'd like to be able to stop copy-pasting code for OptionParsers which parse this base Config (e.g. every single script needs --cluster and…
wrongusername
- 18,564
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2
votes
1 answer
Using the "help" method in the immutable SCOPT (Scala) OptionParser (2.0.1)
I am trying to use the new immutable OptionParser in the Scala scopt 2.0.1 library. Since OptionParser takes a generic type and the help method already defines an action that returns Unit, I am getting a compile-time error:
case class…
Ralph
- 31,584
- 38
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2
votes
1 answer
Scala scopt: argument required() based on one or more other arguments
I am used to use Scala scopt for command line option parsing. You can choose whether an argument is .required() by calling the just shown function.
How can I define an argument that is required only if another argument has been defined?
For…
dadadima
- 938
- 4
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2
votes
1 answer
How to parse a case class which has fields as another case class using "scopt" command line argument?
parsing fields(eg-master:String="") works but what if this was inside another case class like case class Job(SparkArgs) given below, and I need to parse JobArgs
case class SparkArgs(master: String)
val parser = new…
supernatural
- 1,107
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2
votes
2 answers
Scala scopt error with Seq[String]
I'm trying to create a scopt option for Seq[String]:
import scopt._
import scopt.Read._
opt[Seq[String]]("foobar")
^ error
but the compiler complains that it could not find implicit value for evidence parameter of type…
Ralph
- 31,584
- 38
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2
votes
2 answers
Parsing options that take more than one value with scopt in scala
I am using scopt to parse command line arguments in scala. I want it to be able to parse options with more than one value. For instance, the range option, if specified, should take exactly two values.
--range 25 45
Coming, from python background, I…
AnkurVj
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1
vote
0 answers
Using Scopt how to validate keys inside a map argument
I am planning to use Scopt to parse my input arguments.
My input arguments is a map. I have a require on the map argument which will ensure that map is present. How do i ensure that certain key value pairs are present in the map.
object ScalaApp…
BigDataLearner
- 1,388
- 4
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1
vote
0 answers
How to package Scala 3 application using the "scopt" library with "Proguard"?
The moment I add a dependency on the scopt library to my Scala 3 application, I am no longer able to successfully package it using Proguard. Upon attempting to run an executable jar, I am only seeing the following error message:
Exception in thread…
DJ Gruby
- 159
- 1
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1
vote
1 answer
How to do a case insensitive match for command line arguments in scala?
I'm working on a command line tool written in Scala which is executed as:
sbt "run --customerAccount 1234567"
Now, I wish to make this flexible to accept "--CUSTOMERACCOUNT" or --cUsToMerAccount or --customerACCOUNT ...you get the drift
Here's what…
Saturnian
- 1,686
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1
vote
2 answers
case class inheriting another class/trait
I want to have a case class extend a trait
Here are my requirements:
I need to use a case class for the child. This is a hard requirement because of scopt (https://github.com/scopt/scopt)
The parent needs to be a trait. Apologies for not being…
Omkar Neogi
- 675
- 2
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1
vote
1 answer
scopt: Is it possible to refactor single Config into smaller Configs?
I have been using scopt with a single case class:
case class ArgsConfig(
arg1: type1 = value1,
arg2: type2 = value2,
...
)
I now have a large number of possible arguments which makes the class hard to read. The arguments can be grouped…
user2947133
- 325
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