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@nobu

nobu Feb 11, 2021

Contributor 
/^-?\D+[\d,]+\.\d{2}$/ =~ "$,.11" #=> 0
/^-?\D*+[\d,]+\.\d{2}$/ =~ "$,.11" #=> nil
/^-?\D+[\d,]+\.\d{2}$/ =~ "0.11" #=> nil
/^-?\D*+[\d,]+\.\d{2}$/ =~ "0.11") #=> 0