Intellisense and the psychology of typing

Oh, now. If we estimate that a decent programmer writes about 60
words per minute and that 'lean' is about 60% of the word 'boolean';
this would mean that the same decent programmer could write approx.
100 'leans' per minute (or that one 'lean' takes about 0.6 seconds
to write). If we further assume that pressing the <tab> key takes
slightly longer than any other letter, we can still extract a time
savings of about 0.45 seconds per boo<tab>. A single source file
may contain, say, 7 instances of the word boolean on average and
an average project could contain 10 source files; a single project
for one iteration would then yield a savings of about 31.5 seconds.
Extrapolating from the average programmer's involvement in about
three or four projects per year and perhaps two iterations each,
we approach the much more significant figure of about 4 minutes
per year! Extending tab-completion to other keywords and method
names as well could clearly yield significant productivity gains,
not to mention the time lost by the CPU during that typing cycle.
If we assume a utilization rate of about 60% for a CPU, each <tab>
per boolean could mean, on an average computer, saving the CPU about
675,000,000 idle cycles or 357,750,000,000 idle cycles per year!

Now, if an average programming language has 20 keywords and each
appears at a ratio relative to the boolean (on average), a given
source file would have a total of around 140 keywords, that is
1400 per project and thus 9600 per year resulting in a savings
of over an hour!

Then, if you take into account time wasted by the programmer on
silly rebuttals to completely irrelevant topics on Usenet...

E

···

Le 29/5/2005, "Lurker" <nowhere@nothing.com> a écrit:

"James D Carroll" <jamesdcarroll@hotmail.com> wrote in message
news:Td2dndb_0ehebwrfRVn-oA@speakeasy.net...

if I have to type 'boolean' instead of 'boo<tab>' I get real cranky real

fast.

Why? Is your programming speed really limited by the difference
between typing "lean" and hitting <tab>? If typing speed is
the limitation - go get some touch-typing courses.

--
template<typename duck>
void quack(duck& d) { d.quack(); }