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{\u003Cbr\u003E(*a)++\u003Cbr\u003E}\u003Cbr\u003E\u003Cbr\u003E\u003Cbr\u003E为了解决类似这样的情况?',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 12:59:03',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[4,],mentionUsers:[],likeUsers:[],},{id:72921,num:2,uid:13485,content:'有没有可能是为了兼容 cgo ？',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:01:49',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72922,num:3,uid:2493,content:'形如 J**a/Python/JS 的值类型和引用类型是一种「隐式规则」，所以很难说「隐式规则」和「显示指定」之间的优劣，各有各的问题，比如传递后的对象是否还是原来的引用在有些情况下不明确。',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:13:34',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72923,num:4,uid:4877,content:'#1 这种直接修改值类型参数本身就是设计问题，可以加关键字让编译器去做',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:23:36',updatedAt:'2025-03-24 23:56:27',mentionNum:1,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72924,num:5,uid:8884,content:'为了区分基础类型吧，基础类型都有默认值. 觉得没有做到去掉 nil 是一个遗憾',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:32:15',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72925,num:6,uid:9269,content:'值类型可以是栈对象，比堆对象更高效。\u003Cbr\u003E\u003Cbr\u003EC# 的 gc 比 J**a 看上去牛逼的原因就是因为 C# 从诞生开始就支持值类型。虽然 J**a 的 GC 牛逼得多但也是逼出来的。所以保留值类型，可以让 go 程序有可能更高效。\u003Cbr\u003E\u003Cbr\u003E虽然 go 有指针逃逸分析，和自动优化堆对象，但是众所周知，go 的编译是出了名的快（简陋）\u003Cbr\u003E\u003Cbr\u003E所以有些 go 的缓存库标榜自己是 pointer-free 的（全都分配在 []value 上），因此性能比别人好。',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:35:30',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72926,num:7,uid:849,content:'当然是强制程序员有意识的区分自己是在传值还是传引用。这和 gc 不 gc 的没关系。传值不影响外面，传引用会影响外面。这在并发运算时尤其重要',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:36:00',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72927,num:8,uid:249,content:'问就是保留了 C 语言的风味 \u003Cimg src\u003D\"https://i.imgur.com/agAJ0Rd.png\"\u003E',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:42:21',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72928,num:9,uid:2952,content:'PHP 都有指针',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:44:41',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72929,num:10,uid:443,content:' C++里同时有引用和指针，在这件事上引用语义才是更直观的。为什么会选用指针而非引用的方式来区分这二者，其实还挺奇怪的',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 13:53:37',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72930,num:11,uid:1088,content:'指针类型× 引用类型√',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 14:06:25',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72931,num:12,uid:1004,content:'为了区分拷贝 和引用吧。',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 14:10:10',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72932,num:13,uid:5605,content:'我猜测 go 是想成为简单的 C(自动管理内存的 C), 所以保留了 C 中的一些概念. 但是 go 也有想 J**a 一样,默认传引用的类型, map, chan. 反而我觉得 J**a 这种 class 默认传引用 `还不好`,不够灵活.',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 14:30:47',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72933,num:14,uid:12871,content:'因为指针可以是 null, 但是引用或者值不能是空. \u003Cbr\u003E估计是不想搞 optional, 就直接用指针了.',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 14:45:59',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72934,num:15,uid:13479,content:'不能做运算的指针，其实就是别的语言的引用。只有叫法或者语法上的一点差异了',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 15:06:13',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72935,num:16,uid:443,content:'确实。optional 对类型系统和后端优化的要求更高一些，Go 初版连泛型都没有，不太能做 nullable reference ，也只能上指针了。',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 15:07:06',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72936,num:17,uid:849,content:'另外也并不是真的不能运算的指针啊，不是给你留了 unsafe.Pointer 这个口子吗',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 15:14:34',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72937,num:18,uid:748,content:'对于用习惯 c ，迁移代码，太喜欢这点了',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 15:16:16',updatedAt:'2025-03-24 23:56:27',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},{id:72938,num:19,uid:2525,content:'不能运算？ ptr:\u003D(uintptr)((unsafe.Pointer)(\u0026amp;x));ptr\u003Dptr+unsafe.Sizeof(x)',ipRegion:'',updatedByUid:0,createdAt:'2025-03-21 15:18:05',updatedAt:'2025-03-24 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if(headings.length==0){this.nav.showTOC=false}},async doSearch(keywords){this.search.loading=true
try{const response=await axios.post('/fapi/v1/search',{keywords:keywords,})
if(response.data.code===0){if(response.data.data.hash&&response.data.data.hash.length===32){window.location.href="/s/"+response.data.data.hash}else{this.failureAlert('搜索失败: 搜索服务异常')}}else{this.failureAlert('搜索失败: '+response.data.msg)}}catch(error){this.failureAlert('搜索失败: '+error)}
this.search.loading=false},debounce(fn,delay){let timer=null
return function(...args){if(timer)clearTimeout(timer)
timer=setTimeout(()=>{fn.apply(this,args)},delay);};},},watch:{'nav.post.targetPage':{handler:async function(newV,oldV){this.toPage()},immediate:false},},}
const vuetify=createVuetify({defaults:{global:{ripple:true,},},})
const app=createApp(App)
app.use(vuetify).mount("#app")