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This adds a `precompile_validator_lookup` flag (defaulting to false) to `use Vex.Struct`. This changes behavior as follows: * a module attribute (@precompiled_validator_lookup) is initialized for the struct that holds a lookup data structure * calls to `validates :attribute, <validations>` proactively look up the validator AT COMPILE TIME and add them to the lookup data structure * At runtime, the expensive validator lookup is then skipped in favor of just performing a Map fetch from the precompiled validator lookup datastructure.
It is allowed to state `validates :attribute, &myfunction/1`. This special case is expanded to `validates :attribute, by: &myfunction/1` during the validation at runtime. Therefore, we need to cache the `:by` validator if we encounter a function.
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This adds a
precompile_validator_lookupflag (defaulting to false) touse Vex.Struct.This changes behavior as follows:
validates :attribute, <validations>proactively look up thevalidator AT COMPILE TIME and add them to the lookup data structure
validator lookup datastructure.
From my benchmarks, this improved performance on a Struct with 9 fields and 5 distinct validators from 2.25k IPS to 11.3k IPS (+361% performance).