System.Cached.JSON

Documentation

getCachedJSON

Arguments

:: (FromJSON a, ToJSON a)

=> String

subdirectory/program name

-> FilePath

filename

-> String

json url

-> NominalDiffTime

cache duration (minutes)

-> IO a

If the local cached json file is new enough then use it, otherwise refresh from the remote url.

getCachedJSONQuery

Arguments

:: (FromJSON a, ToJSON a)

=> String

program name

-> FilePath

filename

-> IO a

http query

-> NominalDiffTime

cache duration (minutes)

-> IO a

Similar to getCachedJSON but takes an IO procedure that fetches the remote json data.

lookupKey :: FromJSON a => Text -> Object -> Maybe a

Look up key in object