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how to check if inputs for my function are strings or vectors

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carly
carly 2022-12-4
编辑： Jan 2022-12-4
like for my function, when the user inputs an argument that is not a string or vector, i want them to receive an error and for it to say "Input must be a string or vector."
this is what i have so far:
function [output] = function(input1, input2, input3)
if ~isstring(input1) || nargin==3 && ~isstring(input2) || nargin==3 && ~isstring(input3)
error('Input must be a string or vector.')
elseif ~isvector(input1) || nargin==3 && ~isvector(input2) || nargin==3 && ~isvector(input3)
error('Input must be a string or vector.')
end
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Matt J
Matt J 2022-12-4
Back up copy of original question:
like for my function, when the user inputs an argument that is not a string or vector, i want them to receive an error and for it to say "Input must be a string or vector."
this is what i have so far:
function [output] = function(input1, input2, input3)
if ~isstring(input1) || nargin==3 && ~isstring(input2) || nargin==3 && ~isstring(input3)
error('Input must be a string or vector.')
elseif ~isvector(input1) || nargin==3 && ~isvector(input2) || nargin==3 && ~isvector(input3)
error('Input must be a string or vector.')
Jan
Jan 2022-12-4
编辑：Jan 2022-12-4
@carly: This public forum is based on sharing questions and answers. If you have found a solution by your own, post it as answer. Deleting the contents of the question is not helpful and shows a missing repect for the given answers. Therefore you question has been restored.

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回答（1 个）

Matt J
Matt J 2022-12-4
编辑：Matt J 2022-12-4
function [output] = function(varargin)
varargin(4:end)=[];
valid=all( cellfun(@(z)isstring(z) | isvector(z),varargin) );
assert(valid,'Input must be string or vector');
end

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