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Easy way to split CamelCase ?

Is there an easier way to split CamelCase? Perhaps anything builtin to avoid RegularExpression? 

StringJoin[StringSplit["AntiqueWhite and LavenderBlush", RegularExpression["([a-z])([A-Z])"] -> "$1 $2"]]

Out[]= "Antique White and Lavender Blush"
POSTED BY: Vitaliy Kaurov
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Well, this certainly works--though it is the same as yours but using a StringExpression instead of a RegularExperssion:

StringReplace["AntiqueWhite and LavenderBlush",
 x : CharacterRange["a", "z"] ~~ y : CharacterRange["A", "Z"] :> 
  x <> " " <> y]

And like yours, it does not check if the new separated words are actually words...
POSTED BY: David Reiss
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