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PXT's underlying programming language is a subset of TypeScript (leaving out JavaScript dynamic features). The main features of PXT are: [...] an ARM Thumb mac

by homarp 8y ago

PXT's underlying programming language is a subset of TypeScript (leaving out JavaScript dynamic features). The main features of PXT are: [...] an ARM Thumb machine code emitter

mmoskal 8y ago
In fact there is more dynamic features in now, including accessing arbitrary fields through 'any' type and typeof expression. What's missing is mostly eval and prototype inheritance (instead we use classes). There's also a precise GC now.