implicitVars [Was: Re: Best Practices in Rev development]
dave at looktowindward.com
Fri Jun 29 05:31:31 CDT 2007
On 27 Jun 2007, at 04:17, Kay C Lan wrote:
> On 6/26/07, Alex Tweedly <alex at tweedly.net> wrote:
>> This gives the advantage of a short, clean, easy-to-read script while
>> preserving the advantage of error detection. The need to respond
>> to such
>> a dialog once per local variable would be (at least for me) a small
>> price to pay - and is certainly much lighter a burden than the
>> need to
>> add a declaration for each.
> I don't declare variables because I do find that it is easier to
> use the Var
> Watcher to pick up typos than it is to go through the hassle of all
> extra typing to declare variables - where I can make extra typos
This is something I can't understand. When I edit code (whatever the
language) I type the name of the variable once and once only and
maybe I don't type the whole thing at all. I then use copy/paste to
paste the variable into where it is being used. For instance, given
To get this, I typed "local myRedValue", then copied that line and
pasted it back 3 times. Then edited "Red" to "Blue" and "Green" and
"Average" in the 3 new lines.
Then to get this:
put (myRedValue + myBlueValue + myGreenValue) / 3 into myAverageValue
I typed "put ( + + ) / 3 into " and then copied/pasted myRedValue,
myBlueValue, myGreenValue and myAverageValue into the correct positions.
In fact I used the same technique to do the above!
That's why I can't see the argument that's it's more typing, it
really isn't, and the bugs that can be caused by not declaring your
locals are so hard to find that I really can't see any reason not to
All the Best
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