{"id":163,"date":"2021-02-26T22:38:22","date_gmt":"2021-02-26T14:38:22","guid":{"rendered":"https:\/\/www.lazybirds.top\/?p=163"},"modified":"2021-10-19T23:54:02","modified_gmt":"2021-10-19T15:54:02","slug":"%e5%a6%82%e4%bd%95%e4%b8%8d%e7%94%a8%e6%b4%8b%e6%96%87%e7%bc%96%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.lazybirds.top\/?p=163","title":{"rendered":"\u5982\u4f55\u4e0d\u7528\u6d0b\u6587\u7f16\u7a0b"},"content":{"rendered":"\n
\"\"
\u4e0d\u7528\u6d0b\u6587\u751f\u6210\u524d\u4e00\u767e\u4e2a\u7d20\u6570<\/figcaption><\/figure><\/div>\n\n\n\n\n\n\n\n

\u524d\u4e9b\u5929\u5b66\u4e86\u70b9js\uff0c\u53d1\u73b0\u91cc\u8fb9\u7684\u7bad\u5934\u51fd\u6570\u662f\u771f\u7684\u597d\u7528\uff0c\u4ece\u6b64function\u5173\u952e\u5b57\u6d88\u5931\u5728\u4e86\u6211\u7684\u4ee3\u7801\u4e2d\u3002<\/p>\n\n\n\n

\u4f46\u968f\u4e4b\u4e5f\u53d1\u73b0\u4e86\u4e2a\u95ee\u9898\uff0c\u533f\u540d\u51fd\u6570\u9047\u4e0a\u9700\u8981\u9012\u5f52\u7684\u5730\u65b9\u8be5\u548b\u529e\u5462\u2026\u2026<\/p>\n\n\n\n

\u5728\u8c37\u6b4c\u4e0a\u4e0d\u62b1\u4efb\u4f55\u671f\u5f85\u5730\u6572\u4e0b\u201c\u533f\u540d\u51fd\u6570\u201d\u201c\u9012\u5f52\u201d\u7b49\u5b57\u6837\uff0c\u6ca1\u60f3\u5230\u8fd8\u771f\u7684\u6709\u8fd9\u6837\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n

Github\u4e0a\u7684\u5927\u4f6c\u7ed9\u51fa\u4e86\u7b54\u6848\u3002<\/p>\n\n\n\n

https:\/\/github.com\/Lucifier129\/Lucifier129.github.io\/issues\/7 \u5728 JavaScript<\/a><\/p>\n\n\n\n

\u5728 JavaScript \u4e2d\u7528\u533f\u540d\u51fd\u6570\uff08\u7bad\u5934\u51fd\u6570\uff09\u5199\u51fa\u9012\u5f52\u7684\u65b9\u6cd5<\/p>\n\n\n\n

\u770b\u8d77\u6765\u8fd8\u4e0d\u9519\uff0c\u8d8a\u770b\u8d8a\u4ea2\u594b\uff08\u88c5\u4f5c\u770b\u61c2\u4e86\u7684\u6837\u5b50\uff09<\/p>\n\n\n\n

\u6839\u636e\u6559\u7a0b\u91cc\u7684\u6307\u5bfc\uff0c\u6c42\u4e00\u4e2a\u6570\u9636\u4e58\u53ef\u4ee5\u5199\u6210\u8fd9\u6837\u7684\u5f62\u5f0f\uff1a<\/p>\n\n\n\n

var fact_fac = self => num => num ? num * self(--num) : 1;\nvar Y = f => (x => n => f(x(x))(n))(x => n => f(x(x))(n));\nvar fact = Y(fact_fac);\nconsole.log(fact(4));\/\/24<\/code><\/pre>\n\n\n\n
\u89e3\u91ca\u4e00\u4e0b\uff1a<\/p>\n\n\n\n
\u5148\u770b\u7b2c\u4e00\u884c\uff0c<\/p>\n\n\n\n
\u5bf9\u4e8e\u4efb\u610f\u7684\u51fd\u6570self\uff0c\u8fd9\u91cc\u8fb9\u7684fact_fac\uff08\u6e90\u81eafactorial factory\uff0c\u9636\u4e58\u5de5\u5382\uff09\u6ee1\u8db3<\/p>\n\n\n\n
fact_fac(self) <=> num => num ? num * self(--num) : 1;<\/code><\/pre>\n\n\n\n
\u90a3\u4e48\uff0c\u5f53self\u4e3afact\uff0c\u5176\u4e2dfact\u4e5f\u5c31\u662f\u6211\u4eec\u8981\u7684\u9636\u4e58\u51fd\u6570\u65f6\uff0c\u795e\u5947\u7684\u4e8b\u60c5\u53d1\u751f\u4e86\uff01<\/p>\n\n\n\n
fact_fac(fact) <=> num => num ? num * fact(--num) : 1;<\/code><\/pre>\n\n\n\n
\u800c\u540e\u8005\u6070\u6070\u65f6fact\u51fd\u6570\u7684\u5b9e\u73b0\uff01\uff01<\/p>\n\n\n\n
\u8fd9\u610f\u5473\u7740\u6709<\/p>\n\n\n\n
fact_fac(fact) <=> fact<\/code><\/pre>\n\n\n\n
\u90a3\u4e48\u6c42\u89e3fact\u4e5f\u5c31\u610f\u5473\u7740\u8981\u6c42\u89e3fact_fac\u7684\u4e0d\u52a8\u70b9\u3002<\/p>\n\n\n\n
\u800c\u8fd9\uff0c\u6070\u6070\u53ef\u4ee5\u7531\u53e6\u4e00\u4e2a\u795e\u5947\u7684Y\u51fd\u6570\u6c42\u5f97\u3002\u5177\u4f53\u5b9e\u73b0\u53ef\u4ee5\u81ea\u884c\u7ef4\u57faY\u7ec4\u5408\u5b50\u4ee5\u53ca\u03bb\u6f14\u7b97\u3002<\/p>\n\n\n\n
\u5230\u8fd9\u91cc\uff0c\u4f60\u4f1a\u53d1\u73b0\u501f\u52a9Y\u51fd\u6570\uff0c\u6240\u6709\u7684\u9012\u5f52\u51fd\u6570\u90fd\u53ef\u4ee5\u7528\u533f\u540d\u51fd\u6570\u8868\u793a\uff0c\u5177\u4f53\u5b9e\u73b0\u8d77\u6765\u5c31\u662f\u8fd9\u6837\uff1a<\/p>\n\n\n\n
function a (...){\n    ...a(...)...\n    return b;\n}<\/code><\/pre>\n\n\n\n
\u53ef\u4ee5\u7b49\u4ef7\u4e8e<\/p>\n\n\n\n
Y = f => (x => n => f(x(x))(n))(x => n => f(x(x))(n));\na = Y(self => (...) => {\n    ...self(...)...\n    return b;\n});<\/code><\/pre>\n\n\n\n
\u90a3\u8ddf\u6211\u4eec\u7684\u4e3b\u9898\u201c\u5982\u4f55\u4e0d\u7528\u6d0b\u6587\u7f16\u7a0b\u201d\u6709\u4ec0\u4e48\u5173\u7cfb\u5462\uff1f<\/p>\n\n\n\n
\u522b\u6025\uff0c\u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u5b8c\u6210\u4e86\u7b2c\u4e00\u6b65\uff0c\u5f7b\u5e95\u6446\u8131\u4e86function\u5173\u952e\u5b57\u3002<\/p>\n\n\n\n
\u7a0d\u5fae\u6539\u9020\u4e0b\u4e0a\u8ff0\u4ee3\u7801\uff0c\u7528$\u548c_\u7684\u7ec4\u5408\u4ee3\u66ff\u53d8\u91cf\u540d\u6765\u88c5\u903c<\/del>\u6446\u8131\u6d0b\u6587\u3002<\/p>\n\n\n\n
\uff08\u6807\u70b9\u7b26\u53f7\u600e\u4e48\u80fd\u7b97\u6d0b\u6587\u5462\u7684\uff01(\uff5e\uffe3\u25bd\uffe3)\uff5e\uff09<\/p>\n\n\n\n
Y = $_=>(_=>$=>$_(_(_))($))(_=>$=>$_(_(_))($));\na = Y($=>(...)=>{...$(...)...return b;});<\/code><\/pre>\n\n\n\n
\uff08\u5f53\u7136\uff0c\u8fd8\u6709\u7cdf\u7cd5\u7684return\uff0c\u8fd9\u4e2a\u5446\u4f1a\u641e\u6389\uff09<\/p>\n\n\n\n
\u4e8b\u5b9e\u4e0a\uff0c\u8fdb\u4e00\u6b65\u4e86\u89e3js\u91cc\u7684\u533f\u540d\u51fd\u6570\u540e\u53ef\u4ee5\u53d1\u73b0\uff0c\u5b83\u4e0elambda\u51fd\u6570\u5b8c\u5168\u4e00\u81f4\u3002<\/p>\n\n\n\n
\u800clambda\u6f14\u7b97\u65f6\u56fe\u7075\u5b8c\u5907\u7684\uff0c<\/p>\n\n\n\n
\u8fd9\u610f\u5473\u7740\u6211\u4eec\u7684\u7ec8\u6781\u76ee\u6807\uff08\u4e0d\u7528\u6d0b\u6587\u7f16\u7a0b\uff09\u662f\u53ef\u884c\u7684\uff01\uff01<\/p>\n\n\n\n
\n\n\n\n
\u7b2c\u4e8c\u4e2a\u9700\u8981\u89e3\u51b3\u7684\u95ee\u9898\u662f\u5faa\u73af\u7684\u64cd\u4f5c\u3002<\/p>\n\n\n\n
\u4f46\u662f\u6211\u4eec\u5df2\u7ecf\u6709\u4e86\u9012\u5f52\uff0c\u89e3\u51b3\u4e00\u4e2awhile\u5faa\u73af\u5e76\u4e0d\u96be\u3002<\/p>\n\n\n\n
\u76f4\u63a5\u4e0a\u4ee3\u7801\u5427\u3002<\/p>\n\n\n\n
const Y = f => (x => n => f(x(x))(n))(x => n => f(x(x))(n));\nconst while_ = Y(self => judge => dosth => judge() && dosth() ^ self(judge)(dosth));<\/code><\/pre>\n\n\n\n
\u8c03\u7528\u7684\u57fa\u672c\u8bed\u6cd5\u662f<\/p>\n\n\n\n
while(a){b} <=> while_(()=>a)(()=>{b})<\/code><\/pre>\n\n\n\n
\u5177\u4f53\u5e94\u7528\u5982\u4e0b\uff1a<\/p>\n\n\n\n
var test = 5;\nwhile_(() => test > 0)(() => {\n    console.log('yes!!!');\n    test--;\n});<\/code><\/pre>\n\n\n\n
\u7b80\u5316\u4e00\u4e0b\uff1a<\/p>\n\n\n\n
const while_ = ($_=>(_=>$=>$_(_(_))($))(_=>$=>$_(_(_))($)))($=>_=>_$=>_()&&_$()^$(_)(_$));<\/code><\/pre>\n\n\n\n
\u5f53\u7136\u4e5f\u6709\u76f8\u5e94\u7684for\u5faa\u73af\u7248\u672c\uff1a<\/p>\n\n\n\n
const for_ = ($_=>(_=>$=>$_(_(_))($))(_=>$=>$_(_(_))($)))($=>_=>__=>$_=>_$=>{(_&&_())^__()&&_$()^$_()^$()(__)($_)(_$)});<\/code><\/pre>\n\n\n\n
\u8c03\u7528\u7684\u57fa\u672c\u8bed\u6cd5\u662f\uff1a<\/p>\n\n\n\n
for(a;b;c){d} <=> for_(()=>{a})(()=>b)(()=>{c})(()=>{d})<\/code><\/pre>\n\n\n\n
\u5accfor\u592a\u4e11\u592a\u957f\uff0c\u751a\u81f3\u81ea\u5df1\u9020\u4e86\u4e2arepeat\u51fd\u6570\uff0c\u91cd\u590d\u6307\u5b9a\u4ee3\u7801\u82e5\u5e72\u6b21\u3002<\/p>\n\n\n\n
const Y = f => (x => n => f(x(x))(n))(x => n => f(x(x))(n));\nconst repeat_ = Y(self => num => func => num && self(--num)() ^ func());<\/code><\/pre>\n\n\n\n
const repeat_ = ($_=>(_=>$=>$_(_(_))($))(_=>$=>$_(_(_))($)))($=>__=>_=>__&&$(--__)(_)^_());<\/code><\/pre>\n\n\n\n
\u76f8\u5f53\u4e8e\uff1a<\/p>\n\n\n\n
for(var i=0;i<a;i++){b\/*without using i*\/} <=> repeat_(a)(()=>{b})<\/code><\/pre>\n\n\n\n
OK\uff0c\u5230\u6b64\u4e3a\u6b62\u89e3\u51b3\u5faa\u73af\u3002<\/p>\n\n\n\n
\n\n\n\n
\u4e0b\u4e00\u4e2a\u95ee\u9898\u662f\u5982\u4f55\u89e3\u51b3if\u7b49\u6761\u4ef6\u5224\u65ad\uff0c\u8fd9\u4e2a\u597d\u529e\uff0c\u57fa\u672c\u4e5f\u6709\u4ee5\u4e0b\u4e24\u79cd\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n
\u4e00\u79cd\u662f\u4e09\u76ee\u8fd0\u7b97\u7b26\uff1f\uff1a\u2014\u2014\u4e0d\u591a\u8bf4\u4e86\u3002<\/p>\n\n\n\n
\u53e6\u4e00\u79cd\u662f\u5229\u7528&&\u548c||\u4ee5\u53ca&\uff0c|\uff0c^\u7684\u6027\u8d28\uff1a<\/p>\n\n\n\n
if(a){b} <=> a&&b;\nif(a){b}else{c} <=> a&&(b||1)||c;<\/code><\/pre>\n\n\n\n
1\u592a\u4e11\uff0c\u53ef\u4ee5\u6362\u6210!0<\/p>\n\n\n\n
\u4e24\u4e2a\u8bed\u53e5\u95f4\u7684\u5206\u53f7\u4e5f\u53ef\u4ee5\u6362\u6210|\u3001&\u3001^\u7b49\u7b26\u53f7\u3002<\/strong><\/p>\n\n\n\n
\u4e4b\u524d\u8bf4\u7684return\u4e5f\u53ef\u4ee5\u5728\u8fd9\u91cc\u89e3\u51b3\u3002<\/p>\n\n\n\n
\u6ce8\u610f\u5230\u7bad\u5934\u51fd\u6570\u7bad\u5934\u540e\u53ef\u4ee5\u76f4\u63a5\u8fd4\u56de\u503c\uff0c\u90a3\u4e48\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u7684\u66ff\u6362\uff1a<\/p>\n\n\n\n
(a)=>{b; return c;} <=> (a)=>(b)&&0||c<\/code><\/pre>\n\n\n\n
\u5584\u7528++\uff0c\u53ef\u4ee5\u8ba9\u4ee3\u7801\u66f4\u7b80\u6d01\u3002<\/p>\n\n\n\n
\n\n\n\n
\u57fa\u672c\u7684\u64cd\u4f5c\u5c31\u8fd9\u4e9b\u4e86\uff0c\u6700\u540e\u8d34\u4e0a\u5f00\u5934\u5904\u56fe\u7247\u4e2d\u7684\u4ee3\u7801\uff0c\u6b22\u8fce\u5927\u4f6c\u7834\u8bd1\uff1a<\/p>\n\n\n\n
primes_below=$_$=>($=[])&($_=$)&(__=[])|(_=__)|_++^++_|($_=>(_=>$=>$_(_(_))($))(_=>$=>$_(_(_))($)))($=>_=>_$=>_()&&_$()^$(_)(_$))(()=>_<=$_$)(()=>{(_$=0)&(!__[_]&&($[$_++]=_))^($_=>(_=>$=>$_(_(_))($))(_=>$=>$_(_(_))($)))($=>_=>_$=>_()&&_$()^$(_)(_$))(()=>_$<=$_&&_*$[_$]<=$_$&&(_$==0||_%$[_$-!0]))(()=>{(__[_*$[_$]]=!0)|_$++})^_++})&&0||$;
console.log(primes_below(100));<\/code><\/pre>\n\n\n\n
PS. \u5207\u8bb0\uff0c\u6240\u6709\u4ee3\u7801\u6539\u5199\u7b56\u7565\u90fd\u8981\u5728\u975e\u4e25\u683c\u6a21\u5f0f\u4e0b\u6267\u884c\uff0c\u5426\u5219\u5bf9\u53d8\u91cf\u7684\u5b9a\u4e49\u884c\u4e3a\u4f1a\u4ea7\u751f\u6d0b\u6587\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[19],"tags":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/posts\/163"}],"collection":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=163"}],"version-history":[{"count":0,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=\/wp\/v2\/posts\/163\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lazybirds.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}