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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

    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.

    D Offline
    D Offline
    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

          S Offline
          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.

            P Offline
            P Offline
            Pete OHanlon
            wrote on last edited by
            #15

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

            Deja View - the feeling that you've seen this post before.

            My blog | My articles

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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

              C Offline
              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.

              P 1 Reply Last reply
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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
                C Offline
                Christian Graus
                wrote on last edited by
                #17

                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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                • S Sajjad Izadi

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

                  P Offline
                  P Offline
                  Paul Conrad
                  wrote on last edited by
                  #18

                  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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                  • 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.

                    P Offline
                    P Offline
                    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
                      C Offline
                      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.

                        P Offline
                        P Offline
                        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.

                              P Offline
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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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                              • P Pete OHanlon

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

                                Deja View - the feeling that you've seen this post before.

                                My blog | My articles

                                C Offline
                                C Offline
                                Christian Graus
                                wrote on last edited by
                                #25

                                I usually suggest prayer when people ask stuff like this.

                                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.

                                1 Reply Last reply
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                                • C Christian Graus

                                  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 Offline
                                  P Offline
                                  Paul Conrad
                                  wrote on last edited by
                                  #26

                                  Christian Graus wrote:

                                  always for students writing a list class that they will never use

                                  Sure, it primes them up for writing code that never gets used because boss says otherwise, and writing something like a list class teaches the fundamentals of OOP.

                                  Christian Graus wrote:

                                  they should be learning things they can use

                                  Exactly, since they will walk out of the classroom with, hopefully sharper skillsets that can be of value to them. I've had students in the past, who earned lower than average grades thank me for increasing their skillsets, though their academic grade doesn't necessarily reflect it.

                                  "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

                                  1 Reply Last reply
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                                  • P Paul Conrad

                                    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

                                    C Offline
                                    C Offline
                                    Christian Graus
                                    wrote on last edited by
                                    #27

                                    Oh, I hate it when people do that...

                                    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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                                    • S Sajjad Izadi

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

                                      C Offline
                                      C Offline
                                      Christian Graus
                                      wrote on last edited by
                                      #28

                                      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.

                                      1 Reply Last reply
                                      0
                                      • C Christian Graus

                                        Oh, I hate it when people do that...

                                        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 Offline
                                        P Offline
                                        Paul Conrad
                                        wrote on last edited by
                                        #29

                                        Oh well, no worries :-D

                                        "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

                                        1 Reply Last reply
                                        0
                                        • 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

                                          L Offline
                                          L Offline
                                          Lost User
                                          wrote on last edited by
                                          #30

                                          :laugh:

                                          P 1 Reply Last reply
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