!! IN VO (made me laugh)

[IanB]

After years of using VO found this strange thing when I put two ! (by mistake) rather than just the one (i guess you could call it obvious)

Silly example below, but with me getting older sometimes difficult to see multiple !

iif(! TRUE,TRUE,FALSE) = FALSE
iif(!! TRUE,TRUE,FALSE) = TRUE
iif(!!! TRUE,TRUE,FALSE) = FALSE
iif(!!!! TRUE,TRUE,FALSE) = TRUE

Ian

[Karl-Heinz]

Hi Ian,

No one stops you doing this, because there´s nothing wrong with the multiple '!' . Iin X# the compiler translates this code:

Code: Select all

? iif(! TRUE,TRUE,FALSE) == FALSE
? iif(!! TRUE,TRUE,FALSE) == TRUE
? iif(!!! TRUE,TRUE,FALSE) == FALSE
? iif(!!!! TRUE,TRUE,FALSE) == TRUE
?
? iif(.not. TRUE,TRUE,FALSE) == FALSE
? iif(.not. .not. TRUE,TRUE,FALSE) == TRUE
? iif(.not. .not. .not. TRUE,TRUE,FALSE) == FALSE
? iif(.not. .not. .not. .not. TRUE,TRUE,FALSE) == TRUE
?

to:

Code: Select all

XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut()
XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut(true)
XSharp.RT.Functions.QOut()

regards
Karl-Heinz