gambas-user

[Gambas-user] New behaviour for the Split() instruction

[Benoît M. <ga...@us...>]

I'm currently a new behaviour for the Split() instruction, that is 
normally backward-compatible.

	Split("abcd",";","\\;")

splits the "abcd" string with the ";" character, and uses the backslash 
character for escaping it.

This behaviour is enabled when the escape string (the third argument) 
has two characters, and its second character is the same as the first 
splitting character (the second argument). Then the first character of 
the escape string is the escape character (usually a backslash).

What do you think about that?

-- 
Benoît Minisini

Re: [Gambas-user] New behaviour for the Split() instruction

[Benoît M. <ga...@us...>]

Le 29/11/2014 22:13, Benoît Minisini a écrit :
> I'm currently a new behaviour for the Split() instruction, that is
                .
               /|\
defining ------'

> normally backward-compatible.
>
> 	Split("abcd",";","\\;")
>
> splits the "abcd" string with the ";" character, and uses the backslash
> character for escaping it.
>
> This behaviour is enabled when the escape string (the third argument)
> has two characters, and its second character is the same as the first
> splitting character (the second argument). Then the first character of
> the escape string is the escape character (usually a backslash).
>
> What do you think about that?
>

-- 
Benoît Minisini

Re: [Gambas-user] New behaviour for the Split() instruction

[Tobias B. <ta...@gm...>]

On Sat, 29 Nov 2014, Beno??t Minisini wrote:
> I'm currently a new behaviour for the Split() instruction, that is 
> normally backward-compatible.
> 
> 	Split("abcd",";","\\;")
> 
> splits the "abcd" string with the ";" character, and uses the backslash 
> character for escaping it.
> 
> This behaviour is enabled when the escape string (the third argument) 
> has two characters, and its second character is the same as the first 
> splitting character (the second argument). Then the first character of 
> the escape string is the escape character (usually a backslash).
> 
> What do you think about that?
> 

I have not found any use of a two-character escape string in my collective
projects. Therefore, no objection. (Although I don't really understand what
the change means. Do you have an example of what Split() gives before and
after your change, in a case where they're different?)

Regards,
Tobi

-- 
"There's an old saying: Don't change anything... ever!" -- Mr. Monk

Re: [Gambas-user] New behaviour for the Split() instruction

[Benoît M. <ga...@us...>]

Le 29/11/2014 22:22, Tobias Boege a écrit :
> On Sat, 29 Nov 2014, Beno??t Minisini wrote:
>> I'm currently a new behaviour for the Split() instruction, that is
>> normally backward-compatible.
>>
>> 	Split("abcd",";","\\;")
>>
>> splits the "abcd" string with the ";" character, and uses the backslash
>> character for escaping it.
>>
>> This behaviour is enabled when the escape string (the third argument)
>> has two characters, and its second character is the same as the first
>> splitting character (the second argument). Then the first character of
>> the escape string is the escape character (usually a backslash).
>>
>> What do you think about that?
>>
>
> I have not found any use of a two-character escape string in my collective
> projects. Therefore, no objection. (Although I don't really understand what
> the change means. Do you have an example of what Split() gives before and
> after your change, in a case where they're different?)
>
> Regards,
> Tobi
>

Before that, Split("abcd",";","\\;") did nothing useful, as an escape 
character cannot be a splitting character. No error was raised in that 
case, you just got some undefined behaviour.

So I decided to use that syntax to implement a different way of 
splitting the string. Instead of escaping with enclosing characters 
(everything between these two characters cannot be split), I escape 
characters one by one with the special character indicated in the 
beginning of the escape string.

Regards,

-- 
Benoît Minisini

Re: [Gambas-user] New behaviour for the Split() instruction

[B B. <bb...@pa...>]

On Sat, 29 Nov 2014 22:22:23 +0100
Tobias Boege <ta...@gm...> wrote:

> On Sat, 29 Nov 2014, Beno??t Minisini wrote:
> > I'm currently a new behaviour for the Split() instruction, that is 
> > normally backward-compatible.
> > 
> > 	Split("abcd",";","\\;")
> > 
> > splits the "abcd" string with the ";" character, and uses the backslash 
> > character for escaping it.
> > 
> > This behaviour is enabled when the escape string (the third argument) 
> > has two characters, and its second character is the same as the first 
> > splitting character (the second argument). Then the first character of 
> > the escape string is the escape character (usually a backslash).
> > 
> > What do you think about that?
> > 
> 
> I have not found any use of a two-character escape string in my collective
> projects. Therefore, no objection. (Although I don't really understand what
> the change means. Do you have an example of what Split() gives before and
> after your change, in a case where they're different?)
> 
> Regards,
> Tobi
> 
> -- 
> "There's an old saying: Don't change anything... ever!" -- Mr. Monk
> 

Yes, I would like to see an example of before and after as well.

I think I had a need for exactly this the other day. I wanted to split a comma delimited list except where the comma is immediately followed by a space. Will this change help that?

regards
Bruce

-- 
B Bruen <ada...@gm...>

Re: [Gambas-user] New behaviour for the Split() instruction

[Benoît M. <ga...@us...>]

Le 29/11/2014 22:53, B Bruen a écrit :
>
> Yes, I would like to see an example of before and after as well.
>
> I think I had a need for exactly this the other day. I wanted to
> split a comma delimited list except where the comma is immediately
> followed by a space. Will this change help that?
>
> regards Bruce
>

No. It's for splitting such string with the ';' character:

"blue;blue\\;yellow;green"

to get:

["blue","blue;yellow","green"]

-- 
Benoît Minisini