Feature Request: add support operator "in" for types string, int, float

[3axap4eHko]

It would be great to have support of in operator for scalar types to create simple queries with arrays like:

{
  allMarkdownRemark(
    filter: {
      id: { in: ["0","1"] }
    }
  ) {
    edges{
      node {
        id
      }
    }
  }
}

for now I need to build regexp

[KyleAMathews]

Oh interesting!

So the above would turn into something like ["0", "1"].some(f => _.includes(id, f))

[3axap4eHko]

I guess it should be in ES6 notation like ["0","1"].includes(id) =)

[KyleAMathews]

So it's an equality match then? You basically want eq for for matching against multiple things?

[3axap4eHko]

Against multiple things passed through arguments

[3axap4eHko]

it's something like $in in mongodb

[chmac]

This would be really helpful for pagination. For example, I have ~2k blog posts, I'm showing 15 per page. Being able to query for an array of post IDs would be helpful in the pageQuery.