What FP can learn from Smalltalk
summary
Pharo and Squeak show concrete tooling: a Pharo image inspector that evaluates expressions into live inspectors, a data studio that builds DataStudio visualizers without code, and GToolkit that performs GToolkit splicing to inline and collapse indirection. The demo samples 300,000 objects (typical image has ~2.5–3M), finds 60,000 Symbol instances and 40,000 IdentitySet instances, and renders bar charts of method lengths—metrics and domain-specific debuggers run live and produce actionable refactoring targets.
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chapters (4)
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