removal of potentially harmful parameter. #91
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I managed to build an inconsistent graph as the edge.directed information was overwritten by addEdge(_, directed:). Now, the directed parameter is no longer needed. Instead, the information is taken from the Edge parameter.
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I should mention, that I only removed the parameter where the information is already provided via Edge. In other cases, like convience addEdge methods, it is kept. |
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This is, unfortunately, a breaking change as I changed the Graph protocol. |
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Thanks for the contribution. This does potentially make sense but yeah unfortunately is a breaking change. One way to make it a non-breaking change would be to have new one parameter methods for |
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I think I managed to make it a non-breaking change for most use cases. The "only" time the code will now break is if someone else implemented the Graph protocol separately. |
Sources/SwiftGraph/Graph.swift
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| @@ -39,6 +39,11 @@ extension Graph { | |||
| public var edgeCount: Int { | |||
| return edges.joined().count | |||
| } | |||
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| @available(*, deprecated, renamed: "addEdge", message: "Use the addEdge method without the additional directed parameter instead, as the Edge contains already the information about direction. A double specification can only result in inconsistencies and errors.") | |||
| func addEdge(_ e: E, directed: Bool = false){ | |||
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| func addEdge(_ e: E, directed: Bool = false){ | |
| func addEdge(_ e: E, directed: Bool = false) { |
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actually, you found an outdated version. I removed the default value (false) in the latest version.
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Without the default value there is a more clear distinction between the one-parameter version and the 2-parameter. And there is no confusion that you use the one-parameter version when you leave out the default parameter - and not using the default value
Co-authored-by: Zev Eisenberg <[email protected]>
# Conflicts: # Sources/SwiftGraph/Graph.swift
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sorry, KneupnerTrackunit is my alterEgo. Not sure why the last commits where under that name. |
I managed to build an inconsistent graph as the edge.directed information was overwritten by 2nd parameter of addEdge(_, directed:). Now, the directed parameter is no longer needed. Instead, the information is taken from the Edge parameter.
One source of potential problems less.