Back to the future
1997; Association for Computing Machinery; Volume: 32; Issue: 10 Linguagem: Inglês
10.1145/263700.263754
ISSN1558-1160
AutoresDan Ingalls, Ted Kaehler, John Maloney, Scott Wallace, Alan Kay,
Tópico(s)Algorithms and Data Compression
ResumoSqueak 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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