in reply to Re: How would you solve a user-inputted simple one-variable Linear Equation
in thread How would you solve a user-inputted simple one-variable Linear Equation
die "Not supported.\n" if /[^-+0-9x]/;
To avoid Use of uninitialized value $_ in pattern match (m//) at ... I think this should be
die "Not supported.\n" if $eq =~ /[^-+0-9x()]/;
or maybe better
die "Not supported: '$1' \n" if $eq =~ /([^-+0-9x()]+)/;
(both tested).
Give a man a fish: <%-(-(-(-<
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Re^3: How would you solve a user-inputted simple one-variable Linear Equation
by hdb (Monsignor) on Apr 26, 2015 at 07:03 UTC |