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WIP: Eraser implementation #7

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Franciman wants to merge 8 commits from eraserhead into master
pull from: eraserhead
merge into: enrico:master
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src/versioned_canvas.rs
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@ -45,6 +45,10 @@ impl VersionedCanvas {
} }
} }
// TODO: Right now the update function internally checks
// whether the canvas has been changed by leveraging the
// Copy on Write semantics of im::Vector.
// Is this a good solution? Does this work correctly? THINK ABOUT THIS
pub fn update(&mut self, update_fn: impl FnOnce(&mut Canvas)) { pub fn update(&mut self, update_fn: impl FnOnce(&mut Canvas)) {
// This is a linear history, // This is a linear history,
// so we first check if there are newer versions, if so // so we first check if there are newer versions, if so