My `MutableLazy` implementation is here: <https://...

# stdlib

[louiscad]

My MutableLazy implementation is here: https://gist.github.com/LouisCAD/9b4ef46c12f1f6fe9b45658a8eff194c

[louiscad]

@ilya.gorbunov What do you thin about the proposal I made this weekend, which I partially implemented?

[ilya.gorbunov]

Looks consistent with stdlib implementation of lazy 😉 👍
Let's link it to https://youtrack.jetbrains.com/issue/KT-10451

[ilya.gorbunov]

Regarding the issue itself. I'm not against including it in stdlib, though the use cases have to be discussed. If you have some, do not hesitate to share in that issue's comments.

[louiscad]

Commented on it!