“Pause, rewind, and replay programs. Debug by changing history.” Mind-blowing. debug.elm-lang.org
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@bsletten @tedneward The Elm debugger allows roll-back, and fix, and roll-forward … I doubt anyone could do that in an imperative language

Apr 15, 2014 · 7:09 PM UTC

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Replying to @stilkov
@stilkov @bsletten Sure they could. Not easily, but could.
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@tedneward @bsletten OK, add “… with reasonable effort”