help2002

It's UWAweek 42 (2nd semester, week 12)

help2002

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UWA week 38 (2nd semester, week 8) ↓

1st project Expression Syntax Validation (all 4)

9:43am Wed 18th Sep, ANONYMOUS

Hello, Just to confirm. Do we not have to validate any expressions which are assigned to a variable. E.g. x <- y + 2. Do we need to validate 'y + 2', or do we only validate identifiers used in an expression? Thanks

1st project Expression Syntax Validation (all 4)

9:51am Wed 18th Sep, Joshua N.

ANONYMOUS wrote:

> Hello, > > Just to confirm. Do we not have to validate any expressions which are assigned to a variable. > E.g. x <- y + 2. > Do we need to validate 'y + 2', or do we only validate identifiers used in an expression? > > Thanks

Don't need to validate y+2 since it is an expression, but you do need to validate the assignment.

1st project Expression Syntax Validation (all 4)

9:55pm Wed 18th Sep, Samay G.

What is the expression is x <- y+2 But y is not declared so we have to check and declare it, is not that expected?

1st project Expression Syntax Validation (all 4)

10:24pm Thu 19th Sep, Joshua N.

"Samay Gupta" <23*6*5*8@s*u*e*t*u*a*e*u*a*> wrote:

> What is the expression is > > x <- y+2 > > But y is not declared so we have to check and declare it, is not that expected?

Yes. That is the only thing you need to check. If you see a variable, you don't recognize you must replace it with 0.