Storage requirements of tree transforms

[Aaron Bentley]

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Denys Duchier wrote:
| Aaron Bentley <aaron.bentley at utoronto.ca> writes:
|
|
|>I had originally planned that the iterators for new file contents would
|>be held in memory until halfway through the transform application, and
|>then applied.
|
|
| I don't think that was very reasonable: content may be extremely large.

I didn't mean that the iterators AND the new file contents would be held
in memory. Just the iterators, which would hopefully be
non-memory-hogging objects, like file objects, and not like StringIOs.

Aaron
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