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