[lnkForumImage]
TotalShareware - Download Free Software
Confronta i prezzi di migliaia di prodotti.
Asp Forum
 Home | Login | Register | Search 


 

Forums >

comp.lang.ruby

gsub problem

huseyin polat

3/2/2006 4:14:00 PM

I have spend over 4 hours for this.. here is the question masters, very
simple.
str=String.new
str="[1,2][2,1][3,1][4,1]"

now I want to print this string as
[1,2],[2,1],[3,1],[4,1]
in other word I want to add comma between those ][ and make them look
like ],[
I tried gsub with hundred different possibilities but no luck,

second problem
if my the same str has
[1,2][2,1][3,1][4,1],
and I want to get rid of last comma from the list, I tried chop chomp
and all that but it gets ri of alot more than comma at the end. how can
I get rid of last comma from the list? from [1,2][2,1][3,1][4,1], to
[1,2][2,1][3,1][4,1]


any help will be appreciated.
thank you


--
Posted via http://www.ruby-....
14 Answers

Ara.T.Howard

3/2/2006 4:21:00 PM

0

jeem

3/2/2006 4:22:00 PM

0

irb(main):035:0* str="[1,2][2,1][3,1][4,1]"
=> "[1,2][2,1][3,1][4,1]"
irb(main):036:0> str.gsub '][', '],['
=> "[1,2],[2,1],[3,1],[4,1]"


irb(main):037:0> str += ','
=> "[1,2][2,1][3,1][4,1],"
irb(main):038:0> str.chomp ','
=> "[1,2][2,1][3,1][4,1]"

Jim

Gregor Kopp

3/2/2006 4:27:00 PM

0

first problem:

puts "[1,2][2,1][3,1][4,1]".gsub(/\]\[/, '],[')

second problem: headache, im a noob on regexp

huseyin polat schrieb:
> I have spend over 4 hours for this.. here is the question masters, very
> simple.
> str=String.new
> str="[1,2][2,1][3,1][4,1]"
>
> now I want to print this string as
> [1,2],[2,1],[3,1],[4,1]
> in other word I want to add comma between those ][ and make them look
> like ],[
> I tried gsub with hundred different possibilities but no luck,
>
> second problem
> if my the same str has
> [1,2][2,1][3,1][4,1],
> and I want to get rid of last comma from the list, I tried chop chomp
> and all that but it gets ri of alot more than comma at the end. how can
> I get rid of last comma from the list? from [1,2][2,1][3,1][4,1], to
> [1,2][2,1][3,1][4,1]
>
>
> any help will be appreciated.
> thank you
>
>

bluemonk

3/2/2006 9:42:00 PM

0

huseyin polat wrote:

> now I want to print this string as
> [1,2],[2,1],[3,1],[4,1]
> in other word I want to add comma between those ][ and make them look
> like ],[
> I tried gsub with hundred different possibilities but no luck,

no need of regexps nor gsub:

str.split("][").join("],[") #=> "[1,2],[2,1],[3,1],[4,1]"

Ciao!
Marco

--
This way, to star trek...

--
Posted via http://www.ruby-....

huseyin polat

3/2/2006 11:37:00 PM

0

Kent Sibilev wrote:
> $ irb
> irb(main):001:0> str="[1,2][2,1][3,1][4,1],"
> => "[1,2][2,1][3,1][4,1],"
> irb(main):002:0> str.gsub(/\]\[/, '],[').sub(/,$/, '')
> => "[1,2],[2,1],[3,1],[4,1]"
>
> --
> Kent

Kent thank you very much,But I did that and I got
[12][2,1][3,1][4,1] it got rid of last comma but also got rid of the
first comma between 1 and 2 and print them out like 12
any clue?
thank you

--
Posted via http://www.ruby-....

huseyin polat

3/2/2006 11:46:00 PM

0

Kent Sibilev wrote:
> $ irb
> irb(main):001:0> str="[1,2][2,1][3,1][4,1],"
> => "[1,2][2,1][3,1][4,1],"
> irb(main):002:0> str.gsub(/\]\[/, '],[').sub(/,$/, '')
> => "[1,2],[2,1],[3,1],[4,1]"
>
> --
> Kent
Kent
ignore my first message please, yeah I have tried that but program still
prints out as:
[12][21][31][41]

no commas :(

--
Posted via http://www.ruby-....

huseyin polat

3/3/2006 12:02:00 AM

0

unknown wrote:
> On Fri, 3 Mar 2006, huseyin polat wrote:
>
>> I have spend over 4 hours for this.. here is the question masters, very
>> simple.
>> str=String.new
>> str="[1,2][2,1][3,1][4,1]"
>>
>> now I want to print this string as
>> [1,2],[2,1],[3,1],[4,1]
>> in other word I want to add comma between those ][ and make them look
>> like ],[
>> I tried gsub with hundred different possibilities but no luck,
>
> harp:~ > ruby -e' puts("[1,2][2,1][3,1][4,1]".gsub(%r/\]\[/, "],[")) '
> [1,2],[2,1],[3,1],[4,1]
>
>
>> second problem
>> if my the same str has
>> [1,2][2,1][3,1][4,1],
>> and I want to get rid of last comma from the list, I tried chop chomp
>> and all that but it gets ri of alot more than comma at the end. how can
>> I get rid of last comma from the list? from [1,2][2,1][3,1][4,1], to
>> [1,2][2,1][3,1][4,1]
>
> harp:~ > ruby -e'
> puts("[1,2][2,1][3,1][4,1],,,".gsub(%r/,+$/,"").gsub(%r/\]\[/, "],["))
> '
> [1,2],[2,1],[3,1],[4,1]
>
> regards.
>
> -a

thank you, however your first solution didn't make any difference and
the second got rid of all the commas. thank you anyway.
I have tried your second comments as
str.gsub(%r/,+$/,"").gsub(%r/\]\[/, "],[")
I don't know why.
thank you for trying

--
Posted via http://www.ruby-....

huseyin polat

3/3/2006 12:08:00 AM

0

Srinivas Jonnalagadda wrote:
> Please try these.
>
> 1. str.gsub(/\]\[/, '],[')
>
> 2. str.sub(/,$/, '')
>
> Best regards,
>
> JS

thank you JS, however it didn'r change anything.
I am still getting output as
[1,2][2,1][3,1][4,1]

--
Posted via http://www.ruby-....

huseyin polat

3/3/2006 12:18:00 AM

0

bluemonk wrote:
> huseyin polat wrote:
>
>> now I want to print this string as
>> [1,2],[2,1],[3,1],[4,1]
>> in other word I want to add comma between those ][ and make them look
>> like ],[
>> I tried gsub with hundred different possibilities but no luck,
>
> no need of regexps nor gsub:
>
> str.split("][").join("],[") #=> "[1,2],[2,1],[3,1],[4,1]"
>
> Ciao!
> Marco
>
> --
> This way, to star trek...

thank for post, but didn't change anything. maybe I should post my
entire program.
anybody wants to post their email to take a look at the program ?
one more thing, I get the string from a value [1,2][2,1][3,1][4,1] that
is originally created by push an array and then copied into my hash

bighash.sort.each{|key,value|
value.each{ |value|
str=String.new
value=value.to_s
str=value
print str.split("][").join("],[")
}

--
Posted via http://www.ruby-....

Tim Hunter

3/3/2006 12:26:00 AM

0

huseyin polat wrote:
> thank for post, but didn't change anything. maybe I should post my
> entire program.
> anybody wants to post their email to take a look at the program ?
> one more thing, I get the string from a value [1,2][2,1][3,1][4,1] that
> is originally created by push an array and then copied into my hash
>
> bighash.sort.each{|key,value|
> value.each{ |value|
> str=String.new
> value=value.to_s
> str=value
> print str.split("][").join("],[")
> }
>

Here's the output I get when I try Marco's solution. It looks right to me.

iptc$ irb
irb(main):001:0> str="[1,2][2,1][3,1][4,1]"
=> "[1,2][2,1][3,1][4,1]"
irb(main):002:0> puts str.split("][").join("],[")
[1,2],[2,1],[3,1],[4,1]
=> nil
irb(main):003:0>