jon jnvm
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| /* | |
| given goals: | |
| https://github.com/tc39/proposal-class-fields/blob/master/PRIVATE_SYNTAX_FAQ.md#why-is-encapsulation-a-goal-of-this-proposal | |
| & given example: | |
| https://github.com/tc39/proposal-class-fields/blob/master/PRIVATE_SYNTAX_FAQ.md#how-can-you-provide-hidden-but-not-encapsulated-properties-using-symbols | |
| Hidden & encapsulated values can be shared with same instances via WeakMap & Proxies | |
| Undesirable access via callbacks passed in & whatnot just need to be defended against. | |
| One could imagine wanting to allow callbacks read access to privates but not write, doable w/a proxy & setup condition. |
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| /* | |
| given goals: | |
| https://github.com/tc39/proposal-class-fields/blob/master/PRIVATE_SYNTAX_FAQ.md#why-is-encapsulation-a-goal-of-this-proposal | |
| & given example: | |
| https://github.com/tc39/proposal-class-fields/blob/master/PRIVATE_SYNTAX_FAQ.md#how-can-you-provide-hidden-but-not-encapsulated-properties-using-symbols | |
| Hidden & encapsulated values can be shared with same instances via WeakMap & Proxies | |
| Undesirable access via callbacks passed in & whatnot just need to be defended against. | |
| One could imagine wanting to allow callbacks read access to privates but not write, doable w/a proxy & setup condition. |
jnvm
/ frozenWeakmapEncapsulation.js
Last active
February 5, 2018 06:18
frozen weakmap encapsulation
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| /* | |
| https://github.com/tc39/proposal-class-fields/blob/master/PRIVATE_SYNTAX_FAQ.md#how-can-you-model-encapsulation-using-weakmaps | |
| "There's a potential pitfall with this approach, though" | |
| ...so prevent it! | |
| */ | |
| const Person = (function(){ | |
| const privates = new WeakMap; | |
| let ids = 0; | |
| return class Person { | |
| constructor(name, makeGreeting) { |
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| //guess what this outputs | |
| var | |
| varᅚ = 1, | |
| ᅛ = 4, | |
| ᅜ = 2, | |
| ˋhey,ˋ=`B `,<!--#wtf | |
| donˈtᅠworryǃ="(" | |
| console.log(ˋhey,ˋ + donˈtᅠworryǃ + varᅚ*ᅛ*ᅜ) |
jnvm
/ samebind.js
Last active
August 3, 2016 01:20
in which jnvm makes a fool of himself claiming: bind modifies function, doesn't return new one
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| var echo=function(){ | |
| var echoes=echo.count||10 | |
| while(echoes--) this.makeNoise() | |
| } | |
| var dog={ | |
| sound:"woof", | |
| makeNoise:function(){ console.log(this.sound) }, | |
| } |
jnvm
/ obj-hash-test.js
Created
July 18, 2016 04:19
hash test for https://twitter.com/kuvos/status/751685187831001088
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| var durations={} | |
| ,os={} | |
| function aSet(){ | |
| return new Promise((res,rej)=>{ | |
| var N = n = 10, | |
| m = 6 | |
| while(m--) { | |
| //increase keys | |
| N *= 10 | |
| n = N |
jnvm
/ fiddle.html
Created
July 7, 2016 02:46
SNES-style gamepad controller. Implement interaction as needed.
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| <html> | |
| <head> | |
| <script src="https://wzrd.in/standalone/nipplejs"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/peerjs/0.3.14/peer.min.js"></script> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> | |
| </head> | |
| <body> | |
| <style> | |
| body { |
jnvm
/ ShowValidStartingIdentifierChars.js
Created
July 5, 2016 05:41
live-test & show valid starting identifier characters in js.
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| +function ShowValidStartingIdentifierChars(){ | |
| var validStarters={} | |
| ,max=130000 | |
| ,group=5000 | |
| for(var i=0;i<max;i++){ | |
| try{ | |
| var s=String.fromCodePoint(i) | |
| eval(`let ${s}=1`) | |
| validStarters[s]=1 | |
| } |