# Compile time: we can't find any impls for this multi dispatch fn?

**URL:** <https://discourse.julialang.org/t/compile-time-we-cant-find-any-impls-for-this-multi-dispatch-fn/94736>\
**Category:** General Usage\
**Created:** [February 16, 2023, 7:22pm UTC](https://discourse.julialang.org/t/compile-time-we-cant-find-any-impls-for-this-multi-dispatch-fn/94736 "2023-02-16T19:22:06Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![zeroexcuses](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/zeroexcuses/32/46846_2.png) [@zeroexcuses](https://discourse.julialang.org/u/zeroexcuses)\
**Post date:** [February 16, 2023, 9:19pm UTC](https://discourse.julialang.org/t/compile-time-we-cant-find-any-impls-for-this-multi-dispatch-fn/94736/7 "2023-02-16T21:19:00Z")

</div>

I realize this is a bit untypical, but I’m running a webserver as follows:

```julia
sigint_handler() {
	kill $PID
	exit
}

trap sigint_handler SIGINT

while true; do
	sleep 0.1s
  clear
  echo "==============================="
	julia www/server.jl &
	PID=$!
	inotifywait -e close_write www/server.jl
	kill $PID
done

```

I’m wondering if there is a way to inject the JET.jl as a static check before the julia server.jl; so it starts the server if and only if JET.jl finds no obvious errors.

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_[View the full topic](https://discourse.julialang.org/t/compile-time-we-cant-find-any-impls-for-this-multi-dispatch-fn/94736)._