Doubling the ' token

[Ajrat]

Why the behavior is used for a ' token in raw strings like Python, but not in C#?
Python:

Code: Select all

r'\'text' # out: '\'text'

С#(double a ' token intro a string by doubling the ' token):

Code: Select all

@'''text'  // out: ''text'

I tried the sharp'@""' notation but it's breakin

[hopscc]

Theres no escaped ' for a string token in cobra because its unnecessary.
There is a choice of one of two delimiters for a string ('' or "")

If you want a ' (or a ") in a string you can use the other set of string delimiters

"'text" #out: 'text
'"text' #out: "text

[nerdzero]

Well, there is escaped quotes in case you need to include both kinds of quotes in your string, right?

'\'text' #out: 'text
'"\'text' #out: "'text

[Ajrat]

Thanks all!

[hopscc]

Perhaps I misunderstood the question/issue.

Using the r prefix on a string treats it as a 'raw' or totally unprocessed string so there will be no escape char processing done on the contents.
any backslashes/escapes will then appear in the result

print '\'text'  # 'text
print "\"text"   # "text
print r'\'text'  #\'text
print r"\"text" # \"text

The first two are 'normal' strings ( escape processing and substitution (expression interpolation) done - substitution not used here)
the last two use raw strings so output as-is.


looks like the C# equivalent (@'????' ) uses doubled delimiters to indicate insertion of a delimiter - different approach.
cobra uses change of enclosing delimiter ('' vs "" preferably) or escaped delimiter in string

[Charles]

So in summary, for raw strings, you can switch between delimiters (" vs. ') and in those rare instances where you need to include both " and ' in a raw string, you can concatenate two string literals with +.

[Ajrat]

Why choose the way Python?

[hopscc]

Because its better

Swapped delimiters are noticeably easier to read/recognise than embedded doubled punctuation.
I'd say (arguably) so are escaped characters.....

Perhaps not inconsequentially they are also slightly easier to implement correctly..