c# - How do you know when a variable/property has been closed over? -


given expression like:

int32 5 = 5;  express(num => num == five);

where express like

void express(expression<predicate<int32>> predicatesgonnapredicate) {     .... }

when parsing expression above, how determine programmatically 5 has been closed over? can think of ton of hack ways it, there must proper means of identifying this?

if want replace sub-expression don't depend on parameters on lambda values, can use partialeval matt warren's article building iqueryable provider - part iii.

for example, in case result expression num => num == 5.


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