官术网_书友最值得收藏!

Introduction

The D language borrows from several other programming languages, including statically typed languages such as C, C++, and Java, as well as dynamic languages such as Ruby, Python, and JavaScript. The overall syntax is very similar to C; the use of curly braces to denote blocks, declarations in the form of typename initializer, and more. In fact, a lot of, but not all, C code will compile in D too.

D also is aimed at convenience, productivity, and modeling power. These principles can be illustrated with D's type inference feature. Type inference means you can write code without explicitly thinking of and repeating a variable's type. This gives the convenience of using a dynamic language, without sacrificing the compile-time checks of static typing. You'll use type inference throughout your programs. Any variable declared without a type (typically, the keyword auto is used to declare a variable without an explicit type) has an inferred type, where the type is automatically determined by the right-hand side of the assignment. D is one of the fastest compiling languages available, and it gives quick edit-run cycles that help rapid development in dynamic languages. Modeling power comes in the form of D's rich code generation, introspection, and user-defined types, which you'll start exploring in this chapter when you look at structs and classes.

主站蜘蛛池模板: 收藏| 北京市| 桃园县| 民丰县| 南开区| 武宁县| 开平市| 墨竹工卡县| 蓬莱市| 周口市| 广州市| 昔阳县| 康定县| 舒城县| 镇康县| 青铜峡市| 那坡县| 澎湖县| 孟州市| 丹巴县| 井研县| 板桥市| 栾城县| 和林格尔县| 出国| 三明市| 东明县| 邢台市| 岑巩县| 赫章县| 和顺县| 浦县| 梁平县| 安吉县| 大城县| 天台县| 东宁县| 河曲县| 凉山| 常熟市| 疏勒县|