diff options
Diffstat (limited to 'paper/eval.tex')
| -rw-r--r-- | paper/eval.tex | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/paper/eval.tex b/paper/eval.tex index 969a82d..36ff225 100644 --- a/paper/eval.tex +++ b/paper/eval.tex @@ -21,7 +21,7 @@ looking up the variable in the state fails, a \CI{Left Error} will be returned. The last case is more interesting, however. Here, we use bind (\CI{>>=}) to simulate exception handling: the two evaluations of \CI{a1} and \CI{a2} may fail, as may the application of the operator to its two arguments. Even though -we don't know at this point \emph{why} or \emph{where} the evaluation failed, +we do not know at this point \emph{why} or \emph{where} the evaluation failed, \CI{>>=} will conveniently pass through any errors. The abstraction of monad binding allows us to work with data or errors, without @@ -42,7 +42,7 @@ to model it as a lookup table: :: State :== [(Var, Int)] \end{lstlisting} -While possible, this has several drawbacks. First of all, we would need a +Though possible, this has several drawbacks. First of all, we would need a separate function to look up a variable in this store. We could implement that function as follows: |