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I try to add single quotes to a string but don't see how to do it. For instance I would like to replace ABC by 'ABC'.
I have played with paste, cat, print but don't see how to do it.
Any solution?
Thanks, Vincent
452
' You can put a backslash character followed by a quote ( \" or \' ). This is called an escape sequence and Python will remove the backslash, and put just the quote in the string.
Single-quoted Strings: It is the easiest way to define a string. You can use it when you want the string to be exactly as it is written. All the escape sequences like \r or \n, will be output as specified instead of having any special meaning. Single-quote is usually faster in some cases.
The following are our strings with single and double quote. String str1 = "This is Jack's mobile"; String str2 = "\"This is it\"!"; Above, for single quote, we have to mention it normally like. However, for double quotes, use the following and add a slash in the beginning as well as at the end.
Maybe use sQuote?
sQuote("ABC")
# [1] "'ABC'"
This (like its sibling dQuote) is frequently used to put quotes around some message or other text that's being printed to the console:
cat("ABC", "\n")
# ABC
cat(sQuote("ABC"), "\n")
# 'ABC'
Do note (as is documented in ?sQuote) that, depending on the type of quotes needed for your task, you may need to first reset options("useFancyQuotes"). To ensure that the function decorates your text with simple upright ASCII quotes, for example, do the following:
options(useFancyQuotes = FALSE)
sQuote("ABC")
# [1] "'ABC'"
Just use paste:
R> paste("'", "ABC", "'", sep="")
[1] "'ABC'"
or the new variety
R> paste0("'", "ABC", "'")
[1] "'ABC'"
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