Did they mean "." or ":"?
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- Subject: Did they mean "." or ":"?
- From: Christopher Eykamp <chris@...>
- Date: 2010年2月16日 16:05:33 -0800
I'm working on a C++ game that uses Lua scripts to control robot
players. I'm noticing a common error that the scripters are making, and
am looking for a way to detect it and print a helpful error message.
When the scripters should be writing:
bot:setAngle(angle)
they often write:
bot.setAngle(angle)
which looks similar but is of course very different. However, anyone
with much experience in Java, C++, etc., is conditioned to see the
second (wrong) version as right, so this is a very difficult bug to
detect while reading the code.
In the setAngle function, I check that the correct number of parameters
is passed, and I generate an error message if that happens. What I'd
like to do is augment that mechanism by checking if the user used the
"." variant and display a different message that suggests they verify
that they meant to use "." and not ":".
Is there a way from C++ to figure out if a function was called using "."
as opposed to ":"?
Thanks!