how to create empty string arrays and then populate them through arrayName(indexNumber) syntax

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John 2014-2-20

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回答： Nigel Nettheim 2023-6-9

The following works for numbers:

B=[];

B(1)=10;

but how to make it work for strings such as

C=[''];

C(1)='hello';% does NOT work

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Ronald Whiddon 2019-5-10

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Declare an empty string array in this manner:

C=string.empty;

C(1)='hello';

C(2) = 'goodbye';

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Dishant Arora 2014-2-20

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在 MATLAB Online 中打开

c{1} = 'hello';

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Ronald Whiddon 2019-5-10

This is a workaround, but it actually creates a cell array of strings.

Stephen23 2019-5-10

编辑：Stephen23 2019-5-10

"This is a workaround, but it actually creates a cell array of strings. "

At the time this question was posed (and answered) the string class did not exist (it was only introduced in R2016b). Each element of a character array stores only one character, so (until the string class was introduced) the only way to store multiple characters using a scalar index (as the question poses) is to use a cell array. From that persepctive it is not a "workaround", it is the correct solution for versions of MATLAB before R2016b.

https://blogs.mathworks.com/loren/2016/09/15/introducing-string-arrays/

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Nigel Nettheim 2023-6-9

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You can initialise an empty string array with:

s = strings(0)

to which the response is:

s =

0×0 empty string array

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MATLAB Language Fundamentals Data Types Characters and Strings

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