Section: Inspection Functions
y = isa(x,type)
where x is the variable to test, and type is
the type. Supported built-in types are
'cell' for cell-arrays
'struct' for structure-arrays
'logical' for logical arrays
'uint8' for unsigned 8-bit integers
'int8' for signed 8-bit integers
'uint16' for unsigned 16-bit integers
'int16' for signed 16-bit integers
'uint32' for unsigned 32-bit integers
'int32' for signed 32-bit integers
'uint64' for unsigned 64-bit integers
'int64' for signed 64-bit integers
'float' for 32-bit floating point numbers
'double' for 64-bit floating point numbers
'complex' for complex floating point numbers with 32-bits per field
'dcomplex' for complex floating point numbers with 64-bits per field
'string' for string arrays
class function), then
the name of that class is returned.
isa call.
--> a = {1}
a =
[1]
--> isa(a,'string')
ans =
0
--> isa(a,'cell')
ans =
1
-->
quit
Here we use isa along with shortcut boolean evaluation to
safely determine if a variable contains the string 'hello'
--> a = 'hello' a = hello --> isa(a,'string') && strcmp(a,'hello') ans = 1 --> quit