April 2025
Intermediate to advanced
324 pages
7h 35m
Portuguese (Portugal, Brazil)
Content preview from Programando o TypeScript
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Capítulo 7. Manuseamento de erros
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Um físico, um engenheiro de estruturas e um programador estavam num carro a atravessar uma passagem alpina íngreme quando os travões falharam. O carro ia cada vez mais depressa, eles tinham dificuldade em contornar as curvas e, uma ou duas vezes, a frágil barreira de proteção salvou-os de caírem pela encosta da montanha. Tinham a certeza de que iam morrer todos, quando de repente avistaram uma via de evacuação. Entraram na faixa de emergência e pararam em segurança.
O físico disse: "Temos de modelar a fricção nos calços dos travões e o consequente aumento de temperatura, e ver se conseguimos perceber porque é que eles falharam".
O engenheiro estrutural disse: "Acho que tenho umas chaves inglesas lá atrás. Vou dar uma vista de olhos e ver se consigo perceber o que se passa."
O programador disse: "Porque é que não vemos se é reproduzível?"
Anónimo
O Typescript faz tudo o que pode para mover as excepções de tempo de execução para o tempo de compilação: desde o rico sistema de tipos que fornece até às poderosas análises estáticas e simbólicas que executa, trabalha arduamente para que não tenhas de passar as tuas noites de sexta-feira a depurar variáveis mal escritas e excepções de ponteiro nulo (e para que o teu colega de trabalho de serviço não tenha de chegar atrasado à festa de aniversário da tia-avó por causa disso).
Infelizmente, ...
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