This function would receive an expression and return a boolean indicating whether the expression is valid.
The use case for this is that it should be significantly faster than eval since we don't have to evaluate anything. In particular, we wouldn't need to call parse which is the slowest part of eval.
We can try to use something like the Mode pattern described here to avoid code duplication between eval and check.
This function would receive an expression and return a boolean indicating whether the expression is valid.
The use case for this is that it should be significantly faster than
evalsince we don't have to evaluate anything. In particular, we wouldn't need to callparsewhich is the slowest part ofeval.We can try to use something like the
Modepattern described here to avoid code duplication betweenevalandcheck.