声明一个常量数组 [英] Declare a constant array

问题描述

我试过了:

const ascii = "abcdefghijklmnopqrstuvwxyz"
const letter_goodness []float32  = { .0817,.0149,.0278,.0425,.1270,.0223,.0202, .0609,.0697,.0015,.0077,.0402,.0241,.0675, .0751,.0193,.0009,.0599,.0633,.0906,.0276, .0098,.0236,.0015,.0197,.0007 }
const letter_goodness  = { .0817,.0149,.0278,.0425,.1270,.0223,.0202, .0609,.0697,.0015,.0077,.0402,.0241,.0675, .0751,.0193,.0009,.0599,.0633,.0906,.0276, .0098,.0236,.0015,.0197,.0007 }
const letter_goodness = []float32 { .0817,.0149,.0278,.0425,.1270,.0223,.0202, .0609,.0697,.0015,.0077,.0402,.0241,.0675, .0751,.0193,.0009,.0599,.0633,.0906,.0276, .0098,.0236,.0015,.0197,.0007 }

第一个声明和初始化工作正常，但第二个、第三个和第四个不起作用.

The first declaration and initialization works fine, but the second, third and fourth don't work.

如何声明和初始化一个常量数组浮点数?

How can I declare and initialize a const array of floats?

推荐答案

数组本质上不是一成不变的；你不能让它保持不变.

An array isn't immutable by nature; you can't make it constant.

离你最近的是:

var letter_goodness = [...]float32 {.0817, .0149, .0278, .0425, .1270, .0223, .0202, .0609, .0697, .0015, .0077, .0402, .0241, .0675, .0751, .0193, .0009, .0599, .0633, .0906, .0276, .0098, .0236, .0015, .0197, .0007 }

注意 [...] 而不是 []:它确保您获得(固定大小)数组而不是切片.所以值不是固定的，但大小是.

Note the [...] instead of []: it ensures you get a (fixed size) array instead of a slice. So the values aren't fixed but the size is.

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