# How does Experimental.@force\_compile work?

**URL:** <https://discourse.julialang.org/t/how-does-experimental-force-compile-work/80681>\
**Category:** General Usage\
**Tags:** question\
**Created:** [May 7, 2022, 9:00pm UTC](https://discourse.julialang.org/t/how-does-experimental-force-compile-work/80681 "2022-05-07T21:00:31Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![xlxs4](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/xlxs4/32/224566_2.png) [@xlxs4](https://discourse.julialang.org/u/xlxs4)\
**Post date:** [May 7, 2022, 9:00pm UTC](https://discourse.julialang.org/t/how-does-experimental-force-compile-work/80681/1 "2022-05-07T21:00:31Z")

</div>

So I was playing around with `@edit`:

```julia
@edit @time exp(1)

```

In the definition of the `time` `macro`, `timing.jl`, line 216:

```julia
while false; end # compiler heuristic: compile this block (alter this if the heuristic changes)

```

I followed this through [`timing.jl`](https://github.com/JuliaLang/julia/blob/master/base/timing.jl#L262), to [`experimental.jl`](https://github.com/JuliaLang/julia/blob/master/base/experimental.jl#L201) all the way to [this discussion](https://github.com/JuliaLang/julia/issues/39760#issuecomment-782828980) in a GitHub issue. That being said, can someone explain how [`Experimental.@force_compile`](https://github.com/JuliaLang/julia/blob/master/base/experimental.jl#L201) works?