OpenEuphoria

Re: Possible feature for new Euphoria-version

• Posted by "Kat" <gertie at visionsix.com> Jan 08, 2004
• 391 views

On 8 Jan 2004, at 14:38, Euman wrote:

> 
> 
> Ouch, to much confusion...Im an old timer in euphoria
> 
> Euman
> 
> ----- Original Message ----- 
> From: "Tommy Carlier" <tommy.carlier at pandora.be>
> To: "Euphoria Mailing List" <EUforum at topica.com>
> Subject: Possible feature for new Euphoria-version
> 
> 
> > Sequences are really easy to use, but there is no way you can create an 
> > index to a sub-, sub-, sub-sequence of a given sequence. Wouldn't it be 
> > nice if such a thing existed?
> > 
> > In the current version of Euphoria, you can do:
> > sequence seq
> > seq = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}
> > integer a
> > a = seq[2][2]
> > 
> > My suggestion for a new feature: allow the index to be a sequence. That 
> > way you could do something like this:
> > sequence seq
> > seq = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}
> > integer a
> > a = seq[ {2, 2} ]
> > 
> > And now for the exciting part:
> > sequence seq
> > seq = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}
> > sequence b
> > b = {2, 2}
> > integer a
> > a = seq[b]
> > 
> > This way you can also pass and return multiple indices to and from 
> > procedures and functions.

You can do this in strtok:

param = {2}
db = {"this is a test1","this is test2 a"}
result = gettok(db,param,"")

And this:

string = {"Red,Skelton,45,London,England",
          "Lucy,Ball,56,Barre,North Dakota",
          "Fred,Astaire,45,Alberta,Canada",
          "Pierre,du Pont,56,Paris,France"}
string = sorttok(string,{3,-2},',') 
string = {"Red,Skelton,45,London,England",
          "Fred,Astaire,45,Alberta,Canada",
          "Pierre,du Pont,56,Paris,France",
          "Lucy,Ball,56,Barre,North Dakota"}
You see, it did a ascending sort on (fictitious) age field, then sorted the two
last
name fields in decending order. 
And this gets you a seq in reply:

string = {"Red,Skelton,45,London,England",
          "Lucy,Ball,56,Barre,North Dakota",
          "Fred,Astaire,45,Alberta,Canada",
          "Pierre,du Pont,56,Paris,France"}
string = sortntok(string,{3,-2},',') 
string = {1,3,4,2} 

Eu should be as versatile as possible, no?

Kat