Contradictory results in command window with variable class and ischar function?

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Nicholas Kavouris
Nicholas Kavouris 2022-11-3
评论： Stephen23 2022-11-4
debugging a script i wrote and came across this? How is this possible?
K>> class structure(8).timetotemp
ans =
'char'
K>> ischar(structure(8).timetotemp)
ans =
logical
0

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采纳的回答

Bruno Luong
Bruno Luong 2022-11-3
class structure(8).timetotemp
is like
class('structure(8).timetotemp')
which return char.
The correct function syntax call is
class(structure(8).timetotemp)

更多回答（1 个）

Steven Lord
Steven Lord 2022-11-3
Ran in:
This code, class structure(8).timetotemp, is equivalent to:
class('structure(8).timetotemp')
ans = 'char'
If you had a variable array named structure whose 8th element had a property or field named timetotemp and you wanted to know the class of that property or field, use the function form of the class function call rather than the command form.
structure(8) = struct('timetotemp', datetime('today'))
structure = 1×8 struct array with fields:
timetotemp
class(structure(8).timetotemp)
ans = 'datetime'

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