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Add function for checking if a node with a given id exists

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Robert Machmer 2015-12-24 03:24:40 +01:00
parent ebb82093fb
commit 729afd59af
1 changed files with 8 additions and 0 deletions
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8
fd/Graph.lua
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@ -155,6 +155,14 @@ function Graph.new()
end end
end end
---
-- Checks if the id points to an existing node.
-- @param id - The id to check for.
--
function self:exists( id )
return nodes[id] ~= nil;
end
--- ---
-- This function receives a single parameter of type function to which it -- This function receives a single parameter of type function to which it
-- will pass the edges and nodes tables. This means the user has to provide -- will pass the edges and nodes tables. This means the user has to provide