string.ismissing
string: TF = ismissing (str)
string: TF = ismissing (str, indicator)
Find missing elements in string array.
TF = ismissing (str) returns a logical array,
TF, with any true values corresponding to missing elements
in the input string array str.
TF = ismissing (str, indicator) also returns a
logical array, TF, with any true values corresponding to
elements in the input string array str, which are lexicographically
equal to the values in indicator.
indicator must be either a character vector or a string vector or a cell vector of character vectors.
The output array TF has the same size as the input array str.
Source Code: string
ismissing flags the <missing> elements — the string form of missing data, distinct from an empty string "".
s = string ({'a'; 'b'; 'c'});
s(2) = string (missing);
s
s =
3x1 string array
"a"
<missing>
"c"
ismissing (s)
ans = 0 1 0