if have a text file I am parsing. I am using split to break the line
into an
array.
I want to then use splice to pick and choose the fields that I one.
so for example i have a string.
mystring = ‘1,2,3,4,5,6’
then i want to get an array but I only want the 2 field and the last
three
fields.
myarray = mystring.split(’,’).splice(1,3…5)
This breaks.
I can get the range 3…5 or i get the element splice(1).
Am I missing something?
Do i just build the array as normal and then make a new array from the
elements I need?
Paul
On 6/6/06, Paul D. Kraus [email protected] wrote:
fields.
myarray = mystring.split(‘,’).splice(1,3…5)
Honestly I do not know about a splice method for Arrays
here is a less elegant way
m = mystring.split(',')
m[1..1] + m[3..5]
or in case you want to specify your ranges in a string
“1,3…5”.split(“,”).map{|x| x.split(“…”)}.flatten.map{|x| m[x.to_i]}
or you write your own splice method
class Array
def splice( *args )
args.map{ |arg|
case arg
when Integer
arg
when Range
arg.to_a
else
raise TypeError, “blah #{arg} is not to our liking”
end # case arg
}.flatten.map{ |a| self[a] }
end # def splice( *args )
end # class Array
well now I know one 
Hope that helps
Robert
–
Deux choses sont infinies : l’univers et la bêtise humaine ; en ce qui
concerne l’univers, je n’en ai pas acquis la certitude absolue.
Paul D. Kraus wrote:
fields.
Paul
Have you tried the values_at method?
Have you tried the values_at method?
Arrgh I normally always read the doc, sorry OP forget about my splice it
is
already here
values_at
great job!
Robert