1
lemy 2020-12-15 21:06:29 +08:00
是的。而且不止 golang,很多方法都是。
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2
cmostuor 2020-12-15 21:07:58 +08:00
只包含要用到的(不管系统库还是第三库) 没用到的不编译 不信反编译看看
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3
Liyiw 2020-12-15 21:20:22 +08:00
上面两位究竟谁对谁错
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4
Vegetable 2020-12-15 21:31:25 +08:00
不是。在 1.7 版本引入了 method pruning,没有引用和反射的方法将不会被打包。
参见 https://blog.golang.org/go1.7-binary-size The second change is method pruning. Until 1.6, all methods on all used types were kept, even if some of the methods were never called. This is because they might be called through an interface, or called dynamically using the reflect package. Now the compiler discards any unexported methods that do not match an interface. Similarly the linker can discard other exported methods, those that are only accessible through reflection, if the corresponding reflection features are not used anywhere in the program. That change shrinks binaries by 5–20%. |
6
Vegetable 2020-12-15 21:44:21 +08:00
关于函数本身而不是方法。并没有明确的规范说明未使用的函数究竟会不会打包到二进制文件,不过目前验证来看也是会丢弃的,丢弃这个远比方法简单,因为 Go 中函数是不能反射的,直接丢掉就行了。
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7
SingeeKing 2020-12-16 10:04:10 +08:00
我感觉好像只有 Java 会这样,其他的「编译型」语言连 js 都有 Tree Shaking 了
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8
wellhome OP 那这点比 python 强阿。python 用个第三方包中的某个程序,要把整个包都装一下。
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