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digitalmars.D.learn - hex strings

reply Ellery Newcomer <ellery-newcomer utulsa.edu> writes:
just out of curiosity, does anyone use these and actually mean them to 
be strings? It seems like I'm invariably writing

cast(ubyte[]) x"..."
Jan 26 2011
next sibling parent reply Jonathan M Davis <jmdavisProg gmx.com> writes:
On Wednesday, January 26, 2011 10:25:29 Ellery Newcomer wrote:

 just out of curiosity, does anyone use these and actually mean them to
 be strings? It seems like I'm invariably writing
 
 cast(ubyte[]) x"..."


That's legal? I thought that x went in front of hex literals, not strings. I 
wouldn't have thought that that code would compile, and I certainly have no
clue 
what you're trying to do. So, I certainly don't fall in the category of anyone 
using it - regardless of whether it's meant to be a string or not.

- Jonathan M Davis
Jan 26 2011
parent reply bearophile <bearophileHUGS lycos.com> writes:
Jonathan M Davis:


 That's legal?


They are a part of D language, search for "Hex Strings" here:
http://www.digitalmars.com/d/2.0/lex.html

Bye,
bearophile
Jan 26 2011
parent reply Jonathan M Davis <jmdavisProg gmx.com> writes:
On Wednesday, January 26, 2011 11:29:59 bearophile wrote:

 Jonathan M Davis:

 That's legal?


 
 They are a part of D language, search for "Hex Strings" here:
 http://www.digitalmars.com/d/2.0/lex.html


It always seems like there's at least one more thing in the language that I
have 
no idea is there...

- Jonathan M Davis
Jan 26 2011
parent reply Ellery Newcomer <ellery-newcomer utulsa.edu> writes:
On 01/26/2011 01:35 PM, Jonathan M Davis wrote:

 On Wednesday, January 26, 2011 11:29:59 bearophile wrote:

 Jonathan M Davis:

 That's legal?


 They are a part of D language, search for "Hex Strings" here:
 http://www.digitalmars.com/d/2.0/lex.html


 It always seems like there's at least one more thing in the language that I
have
 no idea is there...

 - Jonathan M Davis


helps to have written a D lexer or two. weren't you going to do that?
Jan 26 2011
parent Jonathan M Davis <jmdavisProg gmx.com> writes:
On Wednesday 26 January 2011 11:53:32 Ellery Newcomer wrote:

 On 01/26/2011 01:35 PM, Jonathan M Davis wrote:

 On Wednesday, January 26, 2011 11:29:59 bearophile wrote:

 Jonathan M Davis:

 That's legal?


 
 They are a part of D language, search for "Hex Strings" here:
 http://www.digitalmars.com/d/2.0/lex.html


 
 It always seems like there's at least one more thing in the language that
 I have no idea is there...
 
 - Jonathan M Davis


 
 helps to have written a D lexer or two. weren't you going to do that?


I've been working on it off and on, but I've been busy enough that I haven't
made 
as much progress on it as I'd like. Even so though, I might have already run 
into it there and totally forgot about it, because it's a feature that I've 
never used and have no use for.

- Jonathan M Davis
Jan 26 2011
prev sibling next sibling parent reply "Simen kjaeraas" <simen.kjaras gmail.com> writes:
Ellery Newcomer <ellery-newcomer utulsa.edu> wrote:


 just out of curiosity, does anyone use these and actually mean them to  
 be strings? It seems like I'm invariably writing

 cast(ubyte[]) x"..."


Never used them, tbh. But shouldn't that be

cast(ubyte[]) x"...".dup

?

-- 
Simen
Jan 26 2011
next sibling parent Ellery Newcomer <ellery-newcomer utulsa.edu> writes:
On 01/26/2011 02:16 PM, Simen kjaeraas wrote:

 Ellery Newcomer <ellery-newcomer utulsa.edu> wrote:


 just out of curiosity, does anyone use these and actually mean them to
 be strings? It seems like I'm invariably writing

 cast(ubyte[]) x"..."


 Never used them, tbh. But shouldn't that be

 cast(ubyte[]) x"...".dup

 ?


yeah, strictly speaking. but that (or cast(immutable(ubyte[]))) would be 
even uglier.
Jan 26 2011
prev sibling parent bearophile <bearophileHUGS lycos.com> writes:
Simen kjaeraas:


 cast(ubyte[]) x"..."


 
 Never used them, tbh. But shouldn't that be
 
 cast(ubyte[]) x"...".dup


Maybe it's to avoid such mistakes that C++ has const_cast separated from other
casts.

Bye,
bearophile
Jan 26 2011
prev sibling parent reply spir <denis.spir gmail.com> writes:
On 01/26/2011 07:25 PM, Ellery Newcomer wrote:

 just out of curiosity, does anyone use these and actually mean them to be
 strings? It seems like I'm invariably writing

 cast(ubyte[]) x"..."


Super-nice for universal text. Anything you can't type in because of 
non-illimited keyboard size...


a prefix:
	"#xx
Adds one char compared to D syntax, but allows partially hex-coded string:
	"blah #xx

Denis
-- 
_________________
vita es estrany
spir.wikidot.com
Jan 26 2011
next sibling parent "Simen kjaeraas" <simen.kjaras gmail.com> writes:
spir <denis.spir gmail.com> wrote:


 Adds one char compared to D syntax, but allows partially hex-coded  
 string:
 	"blah #xx





-- 
Simen
Jan 26 2011
prev sibling parent Ellery Newcomer <ellery-newcomer utulsa.edu> writes:
On 01/26/2011 05:57 PM, spir wrote:

 On 01/26/2011 07:25 PM, Ellery Newcomer wrote:

 just out of curiosity, does anyone use these and actually mean them to be
 strings? It seems like I'm invariably writing

 cast(ubyte[]) x"..."


 Super-nice for universal text. Anything you can't type in because of
 non-illimited keyboard size...


 instead of a prefix:
 "#xx
 Adds one char compared to D syntax, but allows partially hex-coded string:
 "blah #xx

 Denis


personally, I always use \uxxxx or \Uxxxxxxxx [and then print it out to 
the console, copy it, and paste it back into my code]
Jan 26 2011