How to check class of variable is struct in MatLab?

[Ans]

isstruct

[description]

<answer>=isstruct(<s1>)

If <s1> is a structure, it will return true. Otherwise, return false.

more details on:

code:

clear

clc

s1=struct

s2=struct([])

s3=struct('a','1')

s4=struct('a',[1 2])

s5=struct('a',[[1] [2]])

s6=struct('a',[['1'] ['2']])

s7=struct('a',1,'b',2,'c',3)

s8=struct('a',1,'b',2,'c',{3,4})

s8(1)

s8(2)

%compiler error

%s8(3,1)

%s8(3,2)

s9=struct('a',{3,4})

s9(1)

s9(2)

s10=struct(s9)

s11=s9

result:

s1 = 

  struct with no fields.

s2 = 

  0×0 empty struct array with no fields.

s3 = 

  struct with fields:

    a: '1'

s4 = 

  struct with fields:

    a: [1 2]

s5 = 

  struct with fields:

    a: [1 2]

s6 = 

  struct with fields:

    a: '12'

s7 = 

  struct with fields:

    a: 1

    b: 2

    c: 3

s8 = 

  1×2 struct array with fields:

a

b

c

ans = 

  struct with fields:

    a: 1

    b: 2

    c: 3

ans = 

  struct with fields:

    a: 1

    b: 2

    c: 4

s9 = 

  1×2 struct array with fields:

a

ans = 

  struct with fields:

    a: 3

ans = 

  struct with fields:

    a: 4

s10 = 

  1×2 struct array with fields:

a

s11 = 

  1×2 struct array with fields:

a

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