“Beyond the way they speak, there is only one (no two!) features of American life which I find really tiresome. The impossibility of getting a bath in the ordinary sense and their ideas on room temperature” — Alan Turing (1936)
P ioneering British computer scientist and mathematician Alan Turing first arrived in America on the 28th of September 1936. Born in 1912, Turing was twenty-four years old when he was invited attend graduate school at Princeton University, studying under Alonzo Church. A Master’s student of mathematics at the University of Cambridge, Turing was at the time working on the theory of computability and would in the coming months be publishing his now renowned paper “ On Computable Numbers, with an Application to the Entscheidungsproblem ” which re-proved his eventual Ph.D. supervisors’ result known as Church’s theorem .
Turing would travel to America twice, first in ’36 and next in ’42. His first visit was for graduate studies in mathematics, his second as a liaison for the UK’s team of cryptoanalysts at Bletchley Park. This essay aims to recount some of his experiences while there.
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Kotlin实战
【美】Dmitry Jemerov(德米特里·詹莫瑞福)、【美】 Svetlana Isakova(斯维特拉娜·伊凡诺沃) / 覃宇、罗丽、李思阳、蒋扬海 / 电子工业出版社 / 2017-8 / 89.00
《Kotlin 实战》将从语言的基本特性开始,逐渐覆盖其更多的高级特性,尤其注重讲解如何将 Koltin 集成到已有 Java 工程实践及其背后的原理。本书分为两个部分。第一部分讲解如何开始使用 Kotlin 现有的库和API,包括基本语法、扩展函数和扩展属性、数据类和伴生对象、lambda 表达式,以及数据类型系统(着重讲解了可空性和集合的概念)。第二部分教你如何使用 Kotlin 构建自己的 ......一起来看看 《Kotlin实战》 这本书的介绍吧!
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