Fix typo and add more information about CBD
The reason for the interleaved updated in CBD is important. fix
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@ -191,9 +191,11 @@ digraph replacement {
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-->
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Here we can see clearly how `B` is updated after the creation of `A` and before
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Here we can see clearly how `B` is updated after the creation of `A` and before
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the destruction of `A`. To introduce another term, the prior resource `A` is
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the destruction of the _deposed_ resource `A`. (The prior resource `A` is
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sometimes referred to as "deposed" before it is destroyed, to disambiguate it
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sometimes referred to as "deposed" before it is destroyed, to disambiguate it
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from the newly created `A`.
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from the newly created `A`.) This ordering is important for resource that
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"register" other resources, and require updating before the dependent resource
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can be destroyed.
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The transformation used to create these graphs is also where we use the extra
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The transformation used to create these graphs is also where we use the extra
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edges mentioned above connecting `B` to `A destroy`. The algorithm to change a
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edges mentioned above connecting `B` to `A destroy`. The algorithm to change a
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@ -255,9 +257,9 @@ digraph replacement {
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}
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}
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-->
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-->
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In order to resolve these cycles, and all resources that precede a resource
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In order to resolve these cycles, all resources that precede a resource
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with `create_before_destroy` must in turn be handled in the same manner.
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with `create_before_destroy` must in turn be handled in the same manner.
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Reversing the incoming edged to `A destroy` resolves the problem:
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Reversing the incoming edges to `A destroy` resolves the problem:
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![Correct create_before_destroy replacement](./images/replace_all_cbd.png)
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![Correct create_before_destroy replacement](./images/replace_all_cbd.png)
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<!--
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<!--
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