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  4. how can i write functions in String class without using any tools?

how can i write functions in String class without using any tools?

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  • S Sajjad Izadi

    excuse me, but as i said, i haven't too use any prepared method for that.

    H Offline
    H Offline
    hammerstein05
    wrote on last edited by
    #5

    Is this a school assignment?

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    • H hammerstein05

      Is that not a built-in class or prepared method? Forgive me, but this does sound like a school assignment.

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      Sajjad Izadi
      wrote on last edited by
      #6

      yes, our professor is wanted us to write a program like that and he told us that we can get help from everyone we want. and i'm getting help from you :).

      H 1 Reply Last reply
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      • S Sajjad Izadi

        yes, our professor is wanted us to write a program like that and he told us that we can get help from everyone we want. and i'm getting help from you :).

        H Offline
        H Offline
        hammerstein05
        wrote on last edited by
        #7

        You'll need to do some coding of your own, and then ask for specific help when you get stuck. You can't just come in here and ask for the code. that's not how it works. The forums aren't for you to get your solution done for you. And you'll find that in most of the forums available.

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        • S Sajjad Izadi

          how can i make my string to char[] without using any built-in classes or prepared methods, += and = or 'foreach' in C#? in an other expression, i want to (have to) write trim, insert, concat, countOf(char c) and etc without using any of methods or classes or foreach and even += or + in C#. how is that? please help, thanks.

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          Christian Graus
          wrote on last edited by
          #8

          I don't see how you can do it without =, but a string is an array of chars, and if you use a for loop instead of foreach, you can get each char by index, as in myString[0]

          Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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          • S Sajjad Izadi

            excuse me, but as i said, i haven't too use any prepared method for that.

            L Offline
            L Offline
            leppie
            wrote on last edited by
            #9

            If you cant use any methods on it, then the string is opaque to you, and there is no way you can do anything with it. I think you read your assignment wrong. Try again.

            xacc.ide - now with TabsToSpaces support
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            • S Sajjad Izadi

              how can i make my string to char[] without using any built-in classes or prepared methods, += and = or 'foreach' in C#? in an other expression, i want to (have to) write trim, insert, concat, countOf(char c) and etc without using any of methods or classes or foreach and even += or + in C#. how is that? please help, thanks.

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              Paul Conrad
              wrote on last edited by
              #10

              Is there a reason why you are wanting to reinvent the wheel?

              "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

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              • S Sajjad Izadi

                how can i make my string to char[] without using any built-in classes or prepared methods, += and = or 'foreach' in C#? in an other expression, i want to (have to) write trim, insert, concat, countOf(char c) and etc without using any of methods or classes or foreach and even += or + in C#. how is that? please help, thanks.

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                Dave Kreskowiak
                wrote on last edited by
                #11

                Cute. Considering that String IS a class under .NET, that kind of makes the assignment contradictory to itself, now doesn't it?

                A guide to posting questions on CodeProject[^]
                Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                     2006, 2007, 2008

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                • C Christian Graus

                  I don't see how you can do it without =, but a string is an array of chars, and if you use a for loop instead of foreach, you can get each char by index, as in myString[0]

                  Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

                  S Offline
                  S Offline
                  Sajjad Izadi
                  wrote on last edited by
                  #12

                  excuse me, but i haven't to use indexes, too.

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                  • S Sajjad Izadi

                    excuse me, but i haven't to use indexes, too.

                    C Offline
                    C Offline
                    Christian Graus
                    wrote on last edited by
                    #13

                    Then I suspect your teacher is a moron. An index is the only way to get those chars out of the string.

                    Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                    • P Paul Conrad

                      Is there a reason why you are wanting to reinvent the wheel?

                      "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

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                      S Offline
                      Sajjad Izadi
                      wrote on last edited by
                      #14

                      no but it's my homework :) and i have to write that till next two days!

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                      • S Sajjad Izadi

                        excuse me, but i haven't to use indexes, too.

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                        Pete OHanlon
                        wrote on last edited by
                        #15

                        So - are you meant to use telepathy? Your professor has effectively ruled out all useful constructs.

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                        • P Paul Conrad

                          Is there a reason why you are wanting to reinvent the wheel?

                          "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

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                          C Offline
                          Christian Graus
                          wrote on last edited by
                          #16

                          Yeah, it's homework. I don't have a problem with trying to point him in the right direction, he was up front about it and he's not asking for a solution. It sounds messy tho.

                          Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                          • S Sajjad Izadi

                            no but it's my homework :) and i have to write that till next two days!

                            P Offline
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                            Paul Conrad
                            wrote on last edited by
                            #17

                            Sajjad Izadi wrote:

                            have to write that till next two days

                            Better get going then.

                            "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

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                            • D Dave Kreskowiak

                              Cute. Considering that String IS a class under .NET, that kind of makes the assignment contradictory to itself, now doesn't it?

                              A guide to posting questions on CodeProject[^]
                              Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
                                   2006, 2007, 2008

                              C Offline
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                              Christian Graus
                              wrote on last edited by
                              #18

                              I think either the teacher is an idiot, or the OP is wrong in his understanding

                              Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                              • C Christian Graus

                                Yeah, it's homework. I don't have a problem with trying to point him in the right direction, he was up front about it and he's not asking for a solution. It sounds messy tho.

                                Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                                Paul Conrad
                                wrote on last edited by
                                #19

                                Christian Graus wrote:

                                It sounds messy tho.

                                Gearing him up for real world maintenance projects, I suppose.

                                "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

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                                • P Paul Conrad

                                  Christian Graus wrote:

                                  It sounds messy tho.

                                  Gearing him up for real world maintenance projects, I suppose.

                                  "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

                                  C Offline
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                                  Christian Graus
                                  wrote on last edited by
                                  #20

                                  *grin*

                                  Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                                  • C Christian Graus

                                    I think either the teacher is an idiot, or the OP is wrong in his understanding

                                    Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                                    Paul Conrad
                                    wrote on last edited by
                                    #21

                                    Christian Graus wrote:

                                    the teacher is an idiot

                                    Might be a safe bet. I don't even subject my CS students to worthless crap assignments. Assignments I push on them have some real meaning to them.

                                    "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

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                                    • P Paul Conrad

                                      Sajjad Izadi wrote:

                                      have to write that till next two days

                                      Better get going then.

                                      "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

                                      C Offline
                                      C Offline
                                      Christian Graus
                                      wrote on last edited by
                                      #22

                                      I think you need to re-read the assignment. You seem to be saying 'turn a string into a byte array without using any methods on the string class that would give you access to the contents of the string'.

                                      Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                                      • P Paul Conrad

                                        Christian Graus wrote:

                                        the teacher is an idiot

                                        Might be a safe bet. I don't even subject my CS students to worthless crap assignments. Assignments I push on them have some real meaning to them.

                                        "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

                                        C Offline
                                        C Offline
                                        Christian Graus
                                        wrote on last edited by
                                        #23

                                        Yeah, they should be learning things they can use, although I am always for students writing a list class that they will never use, for example.

                                        Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

                                        P 1 Reply Last reply
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                                        • C Christian Graus

                                          I think you need to re-read the assignment. You seem to be saying 'turn a string into a byte array without using any methods on the string class that would give you access to the contents of the string'.

                                          Christian Graus Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

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                                          Paul Conrad
                                          wrote on last edited by
                                          #24

                                          Didn't you mean to direct this to Sajjad? I'm not the one doing the assignment :-\

                                          "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

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