Persistent components crash if their data file does not exist.

numberten / zhenya_bot

irc bot and official Haskell feature creep

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Persistent components crash if their data file does not exist. #23

Closed fimad closed 10 years ago

fimad commented 10 years ago

See:

> NICK rick
> USER rick 0 * :Greatest Guys bot
> WHO rick
> JOIN #waffles
ERROR: NickCluster Error: Data.Clustering.Hierarchical.Internal.DistanceMatrix.dendrogram': empty input list
zhenya_bot: data/log.txt: openFile: does not exist (No such file or directory)