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About
Snippet
A
very
simple
but
particularly
useful
technique
for
finding
the
cause
of
a
problem
is
simply
to
explain
it
to
someone
else.
The
other
person
should
look
over
your
shoulder
at
the
screen,
and
nod
his
or
her
head
constantly
(like
a
rubber
duck
bobbing
up
and
down
in
a
bathtub).
They
do
not
need
to
say
a
word;
the
simple
act
of
explaining,
step
by
step,
what
the
code
is
supposed
to
do
often
causes
the
problem
to
leap
off
the
screen
and
announce
itself.
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