. . . 159 案例研究：有理数的类型提升 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 16 接口 161 16.1 迭代 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353 37.15不要把不安全的操作暴露在接口层 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353 37.16不要重载基础容器类型的方法 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 773 55 迭代相关 775 56 C 接口 783 57 LLVM 接口 793 58 C 标准库 795 59 堆栈跟踪 799 60 SIMD 支持 801 CONTENTS xiii V Standard Library 803 61 Base64

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398 43.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399 43.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described below). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380 36.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381 36.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described above). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380 36.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381 36.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described above). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398 43.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399 43.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described below). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398 43.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399 43.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described below). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386 34.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387 34.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described above). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388 34.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389 34.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described above). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380 36.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381 36.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described above). There is also a broadcast! function to specify an explicit destination (which

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386 34.14More dots: Fuse vectorized operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387 34.15Consider the Broadcasted type, allowing for dispatch and specialization. For some types, the machinery to "fuse" operations across nested levels of broadcasting is not available or could be done more efficiently 73659 0.873631 Dotted operators such as .+ and .* are equivalent to broadcast calls (except that they fuse, as described above). There is also a broadcast! function to specify an explicit destination (which