Devin Asay wrote:
Declare your local variables and enable the "variable checking by
default"
option.
It will help prevent typos and cut down your debugging time.
Right. On this one I have to weigh the gain of catching typos against
the pain of giving beginning students yet One More Thing to remember
while they're struggling to get their heads around the whole idea of
variables.
These days I find myself on the fence again on this one.
While I'm attracted to it in principle, because variable declarations
are optional I find myself enjoying turning that off while designing new
code, since it's hard to know in advance what vars I'll be using and
they tend to change as I refine the code.
The downside to this is that if I later turn on explicitVars I need to
go back and add all those declarations; in the heat of meeting
deadlines, I'll admit I rarely do.
So given the freedom of not using explicitVars while fleshing out
algorithms, is it really a valuable thing and I'm just lazy?
--
Richard Gaskin
Managing Editor, revJournal
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