libgraph

v0.13.3

libgraph v0.13.3 Graph.Edge

This module defines the struct used to represent edges and associated metadata about them.

Used internally, v1 and v2 typically hold vertex ids, not the vertex itself, but all public APIs which return Graph.Edge structs, return them with the actual vertices.

Link to this section Summary

Types

edge_opt()
edge_opts()
t()

Functions

new(v1, v2, opts \\ [])

Defines a new edge and accepts optional values for weight and label. The defaults of a weight of 1 and no label will be used if the options do not specify otherwise

Link to this section Types

Link to this type edge_opt() 
edge_opt() :: {:weight, integer() | float()} | {:label, term()}
Link to this type edge_opts() 
edge_opts() :: [edge_opt()]
Link to this type t() 
t() :: %Graph.Edge{
  label: term(),
  v1: Graph.vertex(),
  v2: Graph.vertex(),
  weight: integer() | float()
}

Link to this section Functions

Link to this function new(v1, v2, opts \\ []) 
new(Graph.vertex(), Graph.vertex(), [edge_opt()]) :: t() | no_return()

Defines a new edge and accepts optional values for weight and label. The defaults of a weight of 1 and no label will be used if the options do not specify otherwise.

An error will be thrown if weight is not an integer or float.

Example 

iex> Graph.new |> Graph.add_edge(Graph.Edge.new(:a, :b, weight: "1"))
** (ArgumentError) invalid value for :weight, must be an integer