1. Eu 2.5: new sequence functions

Wouldn't we all like some new (fast as hell) sequence functions?

(length)
(append)
(prepend)

s = insert(s, i, o) -- insert object o in sequence s at position i
s = remove(s, i) -- remove element at position i from sequence s
s = replace(s, i, o) -- replace element at position i in sequence s with 
object o

Wouldn't these 3 little (not so complex) functions add a lot of power to 
Euphoria and its sequence system? Sure, you can already do them right 
now like this:

insert(s, i, o) = s[1..i-1] & o & s[i..length(s)]
remove(s, i) = s[1..i-1] & s[i+1..length(s)]
replace(s, i, o) = s[1..i-1] & o & s[i+1..length(s)]

But it might be too slow for applications that need pure power. And the 
above only works if 1 < i < length(s), so you'd have to check for 
boundaries.

______________
tommy online: http://users.pandora.be/tommycarlier

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