hi, what is the best way to clear a hash table, hash-clear or hash-clear! ? if the hash-table is defined in a code at top-level and used in functions as a global variable, the issue i have is that when at REPL i use a first time my function (that use hash-table) it's ok but when i reuse the function it returns a wrong result as the hash-table is not redefined and cleared and has data in it that make interfere with reuse of hash-table, so i need to clear it ... i tried to read the story about chaperone and impersonator in the doc but my english and the specificities of drracket scheme make that i do not understand which of hash-clear or hash-clear! is more appropriate in this case.
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