String.str_replace?

ruby-talk
1

Lähettäjä: Eko Budi Setiyo <contact_us@haltebis.com>
Aihe: String.str_replace ???

Hi all

Any body can help me with this str_replace problem.

thanks

______________________________________

class String
  def str_replace(str_in,str_out,string = self.to_s)
    result = String.new
    str_in_counter = 0
    string_pointer = 0
    str_in_counter = 0
   
    if str_in.length <= 1
   
        string.length.times{
            if string[string_pointer] == str_in
                result += str_out
            else
                result += string[string_pointer]
            end
        }
       
    else
       
        buffer = ''
        string.length.times{
            if string[string_pointer].to_s == str_in[str_in_counter].to_s
                buffer += string_array[string_pointer].dup
                if buffer.length == str_in_length
                    result += str_out
                    str_in_counter = -1
                    buffer =''
                end
            else
                result += buffer + string[string_pointer]
                str_in_counter = -1
                buffer = ''
            end
            str_in_counter += 1
            string_pointer += 1
        }

    end
  
    result
  end

require 'test/unit'

class Test_string_replace < Test::Unit::TestCase

  def test_replace
      check = '03'
      source = 'aa0a3aa'
      assert_equal(check,source.str_replace('a',''))
     
      check = '03'
      source = 'aaaaaa0aaaa3aaaaaaaa'
      assert_equal(check,source.str_ireplace('aa',''))
   
  end

end

Well,

A) You can just String#tr (or #tr!):

"aaaaa3aaaaa0aaaa".tr 'a', ''

=> "30"

B) You can use Enumerable:

class String
  def str_replace(what, with)
    s = self.collect do |c|
          with if c === what
        end
  end
end

E

2

Thanks,
solve my problem

regards
Eko

E S wrote:

···

Lähettäjä: Eko Budi Setiyo <contact_us@haltebis.com>
Aihe: String.str_replace ???

Hi all

Any body can help me with this str_replace problem.

thanks

______________________________________

class String
def str_replace(str_in,str_out,string = self.to_s) result = String.new str_in_counter = 0 string_pointer = 0
   str_in_counter = 0
  
         string.length.times{ if string[string_pointer] == str_in result += str_out else result += string[string_pointer] end }
         else
             buffer = '' string.length.times{ if string[string_pointer].to_s == str_in[str_in_counter].to_s
               buffer += string_array[string_pointer].dup
               if buffer.length == str_in_length result += str_out str_in_counter = -1
                   buffer ='' end else result += buffer + string[string_pointer]
               str_in_counter = -1
               buffer = ''
           end
           str_in_counter += 1
           string_pointer += 1
       }

   end
    result end

require 'test/unit'

class Test_string_replace < Test::Unit::TestCase

def test_replace
     check = '03'
     source = 'aa0a3aa'
     assert_equal(check,source.str_replace('a',''))
         check = '03'
     source = 'aaaaaa0aaaa3aaaaaaaa'
     assert_equal(check,source.str_ireplace('aa',''))
   end

end
   
Well,

A) You can just String#tr (or #tr!):

"aaaaa3aaaaa0aaaa".tr 'a', ''
     

=> "30"

B) You can use Enumerable:

class String
def str_replace(what, with)
   s = self.collect do |c|
         with if c === what
       end
end
end

E

3

"E S" <eero.saynatkari@kolumbus.fi> schrieb im Newsbeitrag
news:20050125052315.WKZL2811.fep31-app.kolumbus.fi@mta.imail.kolumbus.fi...

B) You can use Enumerable:

class String
  def str_replace(what, with)
    s = self.collect do |c|
          with if c === what
        end
  end
end

I don't think this will work as String#each does not yield single
characaters but "lines".

a=<<EOS

foo
bar
end
EOS
=> "foo\nbar\nend\n"

a.each {|x| p x}

"foo\n"
"bar\n"
"end\n"
=> "foo\nbar\nend\n"

a.collect {|x| p x; :x}

"foo\n"
"bar\n"
"end\n"
=> [:x, :x, :x]

Regards

    robert

4

Robert Klemme wrote:

"E S" <eero.saynatkari@kolumbus.fi> schrieb im Newsbeitrag
news:20050125052315.WKZL2811.fep31-app.kolumbus.fi@mta.imail.kolumbus.fi...

B) You can use Enumerable:

class String
def str_replace(what, with)
   s = self.collect do |c|
         with if c === what
       end
end
end
   
I don't think this will work as String#each does not yield single
characaters but "lines".

You are right, it doesn't
But I already manage to make String.str_replace (case sensitive) and String.str_ireplace (incase sensitive) pass all my unit test
I already check there is not same function yet build in Ruby object
Thanks a lot for giving me some idea

regards
Eko

···

a=<<EOS
     

foo
bar
end
EOS
=> "foo\nbar\nend\n"

a.each {|x| p x}
     

"foo\n"
"bar\n"
"end\n"
=> "foo\nbar\nend\n"

a.collect {|x| p x; :x}
     

"foo\n"
"bar\n"
"end\n"
=> [:x, :x, :x]

Regards

   robert

5

Eko Budi Setiyo <contact_us@haltebis.com> writes:

But I already manage to make String.str_replace (case sensitive) and
String.str_ireplace (incase sensitive) pass all my unit test

I already check there is not same function yet build in Ruby object

But there is: String#gsub()
    
class String
  def str_replace(what, with)
    re = Regexp.new(Regexp.quote(what))
    self.gsub(re) {with}
  end
  
  def str_ireplace(what, with)
    re = Regexp.new(Regexp.quote(what), Regexp::IGNORECASE)
    self.gsub(re) {with}
  end
end

raise "Failed" if "aaaaaaaa0aaaaaa3aaaaaaa".str_ireplace("AA", "") != "03a"
raise "Failed" if "aaaaaaaa0aaaaaa3aaaaaaa".str_ireplace("A", "") != "03"

YS.

6

Yohanes Santoso wrote:

Eko Budi Setiyo <contact_us@haltebis.com> writes:

But I already manage to make String.str_replace (case sensitive) and
String.str_ireplace (incase sensitive) pass all my unit test
   
I already check there is not same function yet build in Ruby object
   

But there is: String#gsub()
   
def str_replace(what, with)
   re = Regexp.new(Regexp.quote(what))
   self.gsub(re) {with}
end
  def str_ireplace(what, with)
   re = Regexp.new(Regexp.quote(what), Regexp::IGNORECASE)
   self.gsub(re) {with}
end
end

raise "Failed" if "aaaaaaaa0aaaaaa3aaaaaaa".str_ireplace("AA", "") != "03a"
raise "Failed" if "aaaaaaaa0aaaaaa3aaaaaaa".str_ireplace("A", "") != "03"

YS

Thanks you verymuch
your scripts pass the following test

require 'test/unit'

class Test_string_ireplace < Test::Unit::TestCase
    def test_replace1
      source = 'rasa FiSh bakar'
      check = 'rasa ikan bakar'
        assert_equal(check,source.str_ireplace('fIsh','ikan')) end
   def test_replace2
      source = 'dunia ini panggung sandiwara'
      check = 'dunia ini panggung codewara'
        assert_equal(check,source.str_ireplace('sandi','code')) end
   def test_replace3
      source = 'dunIa inI panggung sandiwara'
      check = 'duneKoa eKoneKo panggung sandeKowara'
        assert_equal(check,source.str_ireplace('i','eKo')) end
   def test_replace4
      check = 'dunia ini panggung sandiwara'
      source = 'dunekoa ekoneko panggung sandekowara'
        assert_equal(check,source.str_replace('eko','i')) end
   def test_replace5
      check = ' ini panggung sandiwara'
      source = 'dunia ini panggung sandiwara'
        assert_equal(check,source.str_replace('dunia','')) end
   def test_replace6
      check = 'ini panggung sandiwara'
      source = 'dunia ini panggung sandiwara'
        assert_equal(check,source.str_replace('dunia ','')) end
   def test_replace7
      check = '03'
      source = 'aa0a3aa'
        assert_equal(check,source.str_replace('a',''))
           check = '03'
      source = 'aaaaaa0aaaa3aaaaaaaa'
        assert_equal(check,source.str_replace('aa',''))
           check = '03'
      source = 'aaaaaa0aaaa3aaaaaaaa'
        assert_equal(check,source.str_replace('aa',''))
           check = '03'
      source = '0 3'
        assert_equal(check,source.str_replace(' ',''))
           check = '0aa3'
      source = '0 3'
        assert_equal(check,source.str_replace(' ','a')) end
   def test_case_sensitive1
      source = 'dunIa ini panggung sandIwara'
      check = 'dunIa ekoneko panggung sandIwara'
        assert_equal(check,source.str_replace('i','eko')) end
end

···