adding single quotation to a string

Question

MoHa 2020-1-15

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/500452-adding-single-quotation-to-a-string

评论： Ivan 2021-1-30

Hi everybody,

my code accept just this format of String --> filename='"GComScan_20200115_135716.sdb"' (first and last Quotes are single) why i dont know ?

i have tried with this command to get that, but the result was reverse, means first and last Quotes are dobble " ' ' " (without space).

filename = "'" + string(extractBetween(filename, "Scans\\", filename(end)))+ "'"

Result.

the right one;

How can I solve this issue? Thank you.

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Answer 1

Adam Danz 2020-1-15

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编辑：Adam Danz 2020-1-15

filename = sprintf('"%s"',string(extractBetween(filename, "Scans\\", filename(end)))); 

Result:

filename2 = '"GComScan_20200115_135716.sd"'

Explanation:

filename is actually a character array, not a string (see Characters & Strings to understand the difference). The double quotes are part of the character vector. The outer single quotes are not part of the character vector; they actually define the variable as a character vector.

To see the actual content of the filename variable,

>> disp(filename)
"GComScan_20200115_135716.sd"

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MoHa 2020-1-15

Thank you Adam for the Solution and Explanation.

Adam Danz 2020-1-15

Glad I could help!

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Answer 2

Walter Roberson 2020-1-15

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filename = char( extractBetween(filename, "Scans\\", filename(end)) ) ;

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MoHa 2020-1-15

Thanks Walter for your feedback.

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Answer 3

Ivan 2021-1-29

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https://ww2.mathworks.cn/matlabcentral/answers/500452-adding-single-quotation-to-a-string#answer_609483

sprintf('STRING=''"%s"''','MY STRING')

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Adam Danz 2021-1-29

编辑：Adam Danz 2021-1-29

@Ivan I'm not sure how this addresses the question.

Anyway, I saw your profile image in Tomsk, I've been to Tomsk in July 2010 for a conference and spent a week there, met a lot of great people I'm still in touch with.

Ivan 2021-1-30

@Adam Danz sorry, yes, wrong answer, seems it was for another question, too much opened tabs in the browser.

Thats surprise, you've been in Tomsk, nice old city with a lot of students. I also have been there for a week, have made seminars for students, control systems with MATLAB. Amazing world.

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