Edge

This is the most useful of all the helper functions in this module. It is used to define a link between two nodes. This function is also very flexible.

Basic Syntax

Edge -From [string] -To [string]

This is the most common way to define an edge in a graph.

graph g {
    edge -From start -To middle
    edge -From middle To end
}

We can shorten this syntax by dropping the -From and -To properties.

graph g {
    edge start middle
    edge middle end
}

These both generate this basic graph:

Edge [string[]]

If you have a list of things that connect in order, you can specify the entire list.

graph g {
    edge start,middle,end
}

This works even better when you have it defined in an array.

$list = @('start','middle','end')
graph g {
    edge $list
}

Edge -From [string[]] -To [string[]]

Multiple from nodes or to nodes can be specified at once. Every node in the from list will be connected to every node in the to list.

graph g {
   edge -From web1,web2 -To database1,database2
}

Just like before, you can drop the -from or the -to keywords if you prefer. I find myself selectively using them.