[Octave-bug-tracker] [bug #63515] logical should convert char and strings instead of throwing an error for Matlab compatibility

[Nicholas Jankowski]

Follow-up Comment #2, bug #63515 (project octave):

thanks, that matches matlab behavior for other logical uses of chars and
strings, except for the short circuit operators as was discussed over at
https://octave.discourse.group/t/logical-tests-with-char-vectors/3581/22


>> if ('chars'), disp('hello'),end
hello
>> if ("str"), disp('hello'),end
Conversion to logical from string is not possible.
 
>> true & 'chars'

ans =

  1×5 logical array

   1   1   1   1   1

>> true & "str"
Operator '&' is not supported for operands of type 'string'.

>> true && 'chars'
Operands to the logical AND (&&) and OR (||) operators must be convertible to
logical scalar
values. Use the ANY or ALL functions to reduce operands to logical scalar
values.

>> true && "str"
Conversion to logical from string is not possible


so, whether or not this would get addressed before Octave has a working string
object, Octave would have to decide what the desired output is. I would argue
that octave should allow conversion in all cases, initially no difference
between 'str' and "str", and later after implementation the only difference
being that logical('str') turns into [true true true], while logical("str")
would turn into [true].




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