Inserting variables into strings?

Question

Sean 2024-6-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2126531-inserting-variables-into-strings

回答： Taylor 2024-7-2

In Charp I regulaly use

string newstring = $"This string is really easy to change as needed - since just put any data type here - {datatype} the complier takes care of it and consolidates to a single string.";

Am I missing something, is there a way to do this in matlab?

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Stephen23 2024-6-7

编辑：Stephen23 2024-6-7

The MATLAB approach:

https://www.mathworks.com/help/matlab/ref/sprintf.html

https://www.mathworks.com/help/matlab/ref/compose.html

https://www.mathworks.com/help/matlab/matlab_prog/formatting-strings.html

or if you are brave:

https://www.mathworks.com/matlabcentral/fileexchange/164711-f-string

Voss 2024-6-7

在 MATLAB Online 中打开

Another option:

x = 24;
y = 24.5;
str1 = "The highest number is " + x + ", and that's it!";
str2 = "What about " + y + "?";
str1,str2
str1 = "The highest number is 24, and that's it!"
str2 = "What about 24.5?"

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Answer 1

Taylor 2024-7-2

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https://ww2.mathworks.cn/matlabcentral/answers/2126531-inserting-variables-into-strings#answer_1479966

在 MATLAB Online 中打开

The modern "string" datatype is much more intuitve in my opinion, so I recommend Voss' approach over using "fprintf" or "sprintf". It also allows for vectorized usage as well:

x = 1:5;
str = "myFile";
str + x
ans = 1x5 string array
    "myFile1"    "myFile2"    "myFile3"    "myFile4"    "myFile5"

It is also much more capable when it comes to text analytics as well. This was actually the motivation behind creating the new "string" class instead of just using "char".