Result of strfind

Hi,

I'm using strfind function and I want to check the result of this function. However, when strfind doesn't find the string that I indicated and the result is {[]}, instead of the position value. I have tested the result of strfind with strcmp and == or ~= but I can't control the value.

How can I know whether value of strfind is {[]}?

Regards

Answer 1

[Paulo Silva]

a={[]}
isempty(a{:})  %1 if a is empty, 0 otherwise

another option

numel(a{:}) %0 if a is empty, it returns the number of elements of a

[Oleg Komarov]

Won't work on {[1],[],[],[10]}.

[Paulo Silva]

thanks for pointing that out

[Mtlb Usr]

Hi Paulo,

I solved the issue, with your answer.

Thank you

regards

Answer 2

[Oleg Komarov]

I'll show an example:

% Example input
c = {'fine';'How are you'};
out = strfind(c,'fine')
out = 
    [1]
    []

% Return the index with exmpty cells
idxEmpty = cellfun('isempty',out)
idxEmpty =
     0
     1

% Positions on non empty results
posNonEmpty = find(~idxEmpty)
posNonEmpty =
     1

% Extract non empty
c(~idxEmpty) % or c(posNonEmpty)
ans = 
    'fine'

Oleg