adding single quotation to a string

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MoHa
MoHa 2020-1-15
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)))+ "'"quot.JPG
Result.resultOfMyCommand.JPG
the right one;
correctOne.JPG
How can I solve this issue? Thank you.

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采纳的回答

Adam Danz
Adam Danz 2020-1-15
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"

更多回答（2 个）

Walter Roberson
Walter Roberson 2020-1-15
filename = char( extractBetween(filename, "Scans\\", filename(end)) ) ;
Ivan
Ivan 2021-1-29
sprintf('STRING=''"%s"''','MY STRING')
  2 个评论
Adam Danz
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
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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