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Re: Second-Time conversion
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Re: Second-Time conversion


  • Subject: Re: Second-Time conversion
  • From: Nigel Garvey <email@hidden>
  • Date: Fri, 25 Jun 2004 02:11:47 +0100

Graff wrote on Thu, 24 Jun 2004 12:46:47 -0400:

>On Jun 24, 2004, at 11:47 AM, Martin Orpen wrote:

>> on leadZero(x)
>> if x is less than 10 then
>> return "0" & x
>> else
>> return x
>> end if
>> end leadZero

>One thing you might want to change is the second return in the leadZero
>handler. The way it is now you either return a string or a number,
>depending on whether or not the number is less than 10. If you change
>the second return to this then it will always return a string:
>
> return "" & x
>
>What you have right now works simply because you later coerce the
>returned value to a string, so it doesn't matter if it is a string or a
>number. If you put the coercion into the handler in the first place
>you cut down the chances of a bug down the road.

Just to point out that the "coercion" here is actually a concatenation -
which involves the automatic coercion of x to string first, then the
concatenation of the result to "". It's a popular scripting style, but a
straight "coercion" would properly be:

return x as string

NG
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