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`util.toposort`

- Topological sort- Module:
**util.toposort** -
Implements topological sort algorithm.

- Function:
**topological-sort***graph :optional eqproc* {

`util.toposort`}`Graph`represents a directed acyclic graph (DAG) by a list of connections, where each connection is the form(<node> <downstream> <downstream2> ...)

that means a node

`<node>`

is connected to other nodes`<downstream>`

etc.`<node>`

can be arbitrary object, as far as it can be compared by the procedure`eqproc`, which is`eqv?`by default (see Equality). Returns a list of`<node>`

s sorted topologically.If the graph contains circular reference, an error is signaled.

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DRAFT