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Re: why do some writers declare and define variables separately

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On Tuesday, October 8, 2013 10:38:14 PM UTC+1, James Kuyper wrote:
> I prefer to leave variables uninitialized if I cannot initialize them
> with the value they're supposed to have the next time their value is
> read. That's because any decent compiler will give you a warning if its
> analysis of the code flow suggests that there's a possibility of the
> value of that variable being read before it gets written. Initializing a
>  variable with a value that's not actually intended to be used turns off
> that warning, because the compiler doesn't know that you don't intend it
> to be used.

I have to say I prefer the other way round, and also to keep the declarations in as small a scope as possible (i.e. only in the block, rather than declaring every variable ever used at the top of the function). Given you have a decent compiler, it should be able to tell you that you have assigned a value to a variable without using it as well as reading before initialising.
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why do some writers declare and define variables separately yoodavid <odimegwudavid@yahoo.fr> - 2013-09-18 16:42 -0500
  Re: why do some writers declare and define variables separately mt <mahdert@gmail.com> - 2013-10-03 13:37 -0500
    Re: why do some writers declare and define variables separately James Kuyper <jameskuyper@verizon.net> - 2013-10-08 16:38 -0500
      Re: why do some writers declare and define variables separately ThosRTanner <ttanner2@bloomberg.net> - 2013-10-22 16:36 -0500
        Re: why do some writers declare and define variables separately Jens Schmidt <Jens.Schmidt-HH@gmx.de> - 2013-10-24 20:10 -0500
        Re: why do some writers declare and define variables separately Francis Glassborow <francis.glassborow@btinternet.com> - 2013-10-24 20:10 -0500
          Re: why do some writers declare and define variables separately Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2013-10-25 19:36 -0500

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