Specifying parameter type

[gputzel]

Is there a way to specify the type of a workflow parameter?

If I run the following at the command line:

nextflow run main.nf --sampleID 10

then params.sampleID is interpreted as an integer. I would like it to be parsed as a string. I could convert it to a string after it has been parsed as an integer, but that has the potential to cause problems (for example --sampleID 010).

[bentsherman]

You can define a nextflow_schema.json (see the nf-core pipelines for examples) but I'm not sure if this schema feature also does type casting or not.