Reduce number of required parameters for DataDep

[femtotrader]

Hello,

following queryverse/Queryverse.jl#6 (comment)
we should reduce number of required parameters for DataDep

using DataDeps

function __init__()
    register(DataDep(
        "https://raw.githubusercontent.com/davidanthoff/CSVFiles.jl/master/test/data.csv"
    ))
end

df = load(datadep"Queryverse Tests/data.csv") |> DataFrame

should be enough

Message (or message) could be set to "" by default

Name could be set to a default value (a default directory where files are stored)

Kind regards

[oxinabox]

Thanks for your interest.
Two points, and I'll address them separately.

Message (or message) could be set to "" by default

Why? Do convince me.

My why not is that one of the core goals of this package is to help people do better science.
The message parameter exists to allow the giving of credit, the explanation of source,
listings of papers to cite, or licensing terms.

Defaulting it, thus makes it easier to neglect to include this information, without thinking about it.
Where-as forcing the user to enter "" at least means they are making a conscious choice,
to not provide it.

---

Name could be set to a default value (a default directory where files are stored)

It actually couldn't.
It might not be apparent, but DataDeps.jl is strongly folder orientated.
Every name must be unique (some limited scoping with the package/project private directories, but not important here).
Each datadep corresponds to a folder with that name (which is located somewhere on the system, most likely ~/.julia/datadeps/, but movable and configurable).
Even for datadeps that contain only a single file, it will have a folder with the given name.

When you say df = load(datadep"Queryverse Tests/data.csv") |> DataFrame
the Queryverse Tests part is actually saying the name of the datadep,
so that DataDeps.jl can go and search around various parts of the system looking for a folder with that name. (and then downloading if it doesn't find one).

It would be difficult to be able to default that ever, I can't think how it could be done.
Maybe for packages with only one DataDep it could be defaulted to the package name or something.
but it seems more confusing than not.

[oxinabox]

I am tempted to close this, given no activity