Abstract
Squeak is an open, highly-portable Smalltalk implementation whose
virtual machine is written entirely in Smalltalk, making it easy
to. debug, analyze, and change. To achieve practical performance,
a translator produces an equivalent C program whose performance is
comparable to commercial Smalltalks.Other noteworthy aspects of Squeak
include: a compact object format that typically requires only a single
word of overhead per object; a simple yet efficient incremental garbage
collector for 32-bit direct pointers; efficient bulk-mutation of
objects; extensions of BitBlt to handle color of any depth and anti-aliased
image rotation and scaling; and real-time sound and music synthesis
written entirely in Smalltalk.
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