Adding a new field to a struct array

Hey All! I'm trying to add a new field to a struct array inline. I have the following struct:

A(1).name = 'bob';
A(2).name = 'cindy';

newstruct = 'address'

How do I go about adding the a field A.address to the array struct with the field name being define din the newstruct variable? The existing array should then look like the following:

A(1).name = 'bob';
A(2).name = 'cindy';
A(1).address = [];
A(2).address = [];

Answer 1

[Walter Roberson]

A(1).(newstruct) = value;

If you have a cell array of contents to be put into existing entries, then you can use

[A.(newstruct)] = values_cell{:};

to set all of them at the same time.

[sarah wentzel]

what are value in the first option and values_cell in the second? are those new variables?

[Walter Roberson]

value in the above could be any variable or expression of any size or data type.

values_cell in the above would have to be a variable containing a cell array, in which the number of entries was the same as numel(A); each cell entry could be any data type or size.

More obscurely, values_cell could instead be the name of a true function (not function handle) for a function that could be called with no parameters, and which returned a cell array.

More obscurely still, values_cell could be the name of a class with a class constructor that could be invoked with no parameters, and the class defined subsref with {} operation, or defined the specialized method for overloading {}, so that the class name with no parameters defines an object and the {:} invoked whatever the {} operation was redefined as.

Answer 2

[Siva]

A(1).name = 'bob';
A(2).name = 'cindy';
A(1).address = ' Flat No.502, Apple Towers,...
 1st line, Ravindra Nagar, Guntur,Andhra Pradesh, India,PIN-522006';
A(2).address = ' Flat No.102, Balaji Towers,...
2nd line, Brodipet, Guntur, Andhra Pradesh, India, PIN-522006';

Answer 3

[sarah wentzel]

I created this cell

somecell = struct('Name', {'bob', 'lea', 'pat'}, 'Birth_year', {1990, 1988, 2021})

and now I want to add new information, favorite color. I know I can do it one by one like this:

somecell(1).color = 'blue'

somecell(2).color = 'red'

somecell(3).color = 'green'

But is there a way to do it with only one line? something like;

somecell (:,3).color = {'blue', 'red', 'green'}

thank you!

[Stephen23]

S = struct('Name', {'bob', 'lea', 'pat'}, 'Birth_year', {1990, 1988, 2021})

S = 1×3 struct array with fields:
    Name
    Birth_year

[S.color] = deal('blue','red','green')

S = 1×3 struct array with fields:
    Name
    Birth_year
    color

Or from a cell array:

C = {'small', 'large', 'medium'};
[S.tshirtsize] = C{:}

S = 1×3 struct array with fields:
    Name
    Birth_year
    color
    tshirtsize

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html

https://www.mathworks.com/matlabcentral/answers/320713-how-to-operate-on-comma-separated-lists