Hi Philippe,

Philippe Oehler wrote:
> Why hm is local to function ? There's no /local refinement + The hm is
> called outside. So in my understanding, hm shouldn't be local..

_All_ arguments to functions are local to that function. Think about it: 
do you really want all arguments to functions be defined in the global 
context?

hm is not _called_ outside the function, it only gets its _value_ from 
outside.

> So what I have to do  to have a global variable ??

In Rebol, by default, everything is global, except when explicitly 
noted. So, for you, just just change it like this:

transfo-time: func [hm-arg] [
  hm: parse hm-arg "."
  hm/1: to-integer hm/1
  hm/2: to-integer hm/2
  hm: to-time join hm/1 [":" hm/2]
  hm
]

Now hm is not explicitly listed as local, and thus it's global. (A word 
to the wise, I would _not_ recommend to program it this way.)

> why do u write heure: transfo-time heure.. ?

transfo-time returns the last value, which is hm. Now Sunanda sets the 
word heure - which held the time string in the beginning - to the value 
returned by transfo-time, which is the computed time value.


I hope that helps,

Ingo


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