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  4. Nice usage of foreach

Nice usage of foreach

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  • A Andrew Chan

    I once saw a programmer write this. foreach (User user in users) { return user; } :laugh:

    L Offline
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    Luc Pattyn
    wrote on last edited by
    #3

    What is horrible about giving preferential treatment to the first user? By the time the app has more users, they probably will have introduced a new keyword yielding some attention to more recent customers... :)

    Luc Pattyn [Forum Guidelines] [My Articles]


    - before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets


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    • P PIEBALDconsult

      If users provides only the IEnumerable interface then you kinda have to do that. We'd need to see more of the code to determine just how horrible it is.

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      J4amieC
      wrote on last edited by
      #4

      IEnumerable.FirstOrDefault[^] aside of course.

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      • J J4amieC

        IEnumerable.FirstOrDefault[^] aside of course.

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        PIEBALDconsult
        wrote on last edited by
        #5

        That's an Extension Method, not a member of IEnumerable, and therefore has no access to the underlying data; it is likely implemented the same way as the original post. X|

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        • P PIEBALDconsult

          That's an Extension Method, not a member of IEnumerable, and therefore has no access to the underlying data; it is likely implemented the same way as the original post. X|

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          J4amieC
          wrote on last edited by
          #6

          PIEBALDconsult wrote:

          likely implemented the same way as the original post.

          Which was exactly my point, i think :confused:

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          • A Andrew Chan

            I once saw a programmer write this. foreach (User user in users) { return user; } :laugh:

            M Offline
            M Offline
            Marc Clifton
            wrote on last edited by
            #7

            You're sure it wasn't something like this?

            foreach (User user in users)
            {
            yield return user;
            }

            Marc

            Available for consulting and full time employment. Contact me. Interacx

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            • M Marc Clifton

              You're sure it wasn't something like this?

              foreach (User user in users)
              {
              yield return user;
              }

              Marc

              Available for consulting and full time employment. Contact me. Interacx

              A Offline
              A Offline
              Andrew Chan
              wrote on last edited by
              #8

              Wow, I didn't know about the yield operator till now. Thanks for bringing this to my attention. :thumbsup: As for whether the code itself had a yield operator, it was so long ago I cannot remember. I'll give the programmer the benefit of the doubt.

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              • L Luc Pattyn

                What is horrible about giving preferential treatment to the first user? By the time the app has more users, they probably will have introduced a new keyword yielding some attention to more recent customers... :)

                Luc Pattyn [Forum Guidelines] [My Articles]


                - before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets


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                J Offline
                Jeremy Tierman
                wrote on last edited by
                #9

                Just as long as it isn't alphabetical...I got tired of being at the end of the line in Elementary :-\

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                • M Marc Clifton

                  You're sure it wasn't something like this?

                  foreach (User user in users)
                  {
                  yield return user;
                  }

                  Marc

                  Available for consulting and full time employment. Contact me. Interacx

                  R Offline
                  R Offline
                  Rob Grainger
                  wrote on last edited by
                  #10

                  I think Luc may have been hinting at this - he'd better remember not to make such hints so subtle next time... "they probably will have introduced a new keyword yielding some attention to more recent customers..."

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                  • R Rob Grainger

                    I think Luc may have been hinting at this - he'd better remember not to make such hints so subtle next time... "they probably will have introduced a new keyword yielding some attention to more recent customers..."

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                    L Offline
                    Luc Pattyn
                    wrote on last edited by
                    #11

                    :thumbsup:

                    Luc Pattyn [Forum Guidelines] [My Articles]


                    - before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets


                    1 Reply Last reply
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                    • R Rob Grainger

                      I think Luc may have been hinting at this - he'd better remember not to make such hints so subtle next time... "they probably will have introduced a new keyword yielding some attention to more recent customers..."

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                      PIEBALDconsult
                      wrote on last edited by
                      #12

                      Party pooper.

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                      • P PIEBALDconsult

                        Party pooper.

                        L Offline
                        L Offline
                        Luc Pattyn
                        wrote on last edited by
                        #13

                        :thumbsup::thumbsup:

                        Luc Pattyn [Forum Guidelines] [My Articles]


                        - before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets


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                        • A Andrew Chan

                          I once saw a programmer write this. foreach (User user in users) { return user; } :laugh:

                          S Offline
                          S Offline
                          Soundman32 2
                          wrote on last edited by
                          #14

                          I have seen this when the array doesn't contain a indexing property. return users[0]; // Doesn't work I seem to remember this being the default behaviour for non generic Lists in early .net (2?).

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                          • S Soundman32 2

                            I have seen this when the array doesn't contain a indexing property. return users[0]; // Doesn't work I seem to remember this being the default behaviour for non generic Lists in early .net (2?).

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                            JasonPSage
                            wrote on last edited by
                            #15

                            I've seen that - and I've also done this "kludge" when I literally didn't have time to look it up: e.g. Must get done fast, bigger fish to fry.. this works - move on. Not ideal - but - depends what's going on.. schedule.. time constraints. It's still readable at least. --Jason

                            Know way to many languages... master of none!

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                            • M Marc Clifton

                              You're sure it wasn't something like this?

                              foreach (User user in users)
                              {
                              yield return user;
                              }

                              Marc

                              Available for consulting and full time employment. Contact me. Interacx

                              L Offline
                              L Offline
                              Lost User
                              wrote on last edited by
                              #16

                              hey 10x for teling abt yield operator

                              Ravie Busie Coding is my birth-right and bugs are part of feature my code has!

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                              • J J4amieC

                                IEnumerable.FirstOrDefault[^] aside of course.

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                                cpkilekofp
                                wrote on last edited by
                                #17

                                J4amieC wrote:

                                IEnumerable.FirstOrDefault[^] aside of course.

                                If, in fact, you are using .NET 3.5, as otherwise this doesn't exist.

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                                • P PIEBALDconsult

                                  If users provides only the IEnumerable interface then you kinda have to do that. We'd need to see more of the code to determine just how horrible it is.

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                                  dojohansen
                                  wrote on last edited by
                                  #18

                                  Ouch, you sure stepped in the salad! That code necessarily returns the first item in enumerating "users". Had it been a yield return things would be different though.

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                                  • D dojohansen

                                    Ouch, you sure stepped in the salad! That code necessarily returns the first item in enumerating "users". Had it been a yield return things would be different though.

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                                    PIEBALDconsult
                                    wrote on last edited by
                                    #19

                                    Ummm... yeah, so? :confused:

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