On 2012-05-11 23:03, Chris Cain wrote:
On Friday, 11 May 2012 at 20:45:53 UTC, Vidar Wahlberg wrote:
Perhaps the compiler should print out a warning when you're assigning
a value to a lazy parameter in a function call?
The entire point of a lazy parameter is to not be
calculated/processed until it's actually necessary. This is
normal behavior for lazy. Most actual use cases for lazy would be made
impractical if the compiler bombarded the programmer with warnings.
I'm not suggesting that the compiler should print a warning if you're
doing a calculation in the function call, I'm suggesting it should give
you a warning if you're assigning the result of the calculation to a
variable in the function call.
In other words, «log("%s", a + 1);» would give no warning, while
«log("%s", ++a);» and «log("%s", (a = a + 1));» would.
(Sorry if this is a duplicate, got an error upon sending, it appears
like the message never was sent)
