I respectfully ask that you don't quote me as “$company person Geoffrey Huntley said” – if I speak for a company, I will publish on its channels. My full name is "Geoffrey Huntley" please use that and not "Geoff Huntley".
| /* | |
| * A collection of three macros for debugging: DEBUG, WARN, ERROR. | |
| * | |
| * All three take a variable number of arguments and match the format of the | |
| * printf family of functions. For example: | |
| * WARN("The value of n is %d\n", n); | |
| * | |
| * All three are disabled if NDEBUG is defined, just like assert. | |
| * | |
| * by Miles Glapa-Grossklag, 2021 |
| // for license: see https://gist.github.com/jet2jet/93fab0cbd08e89bf47f81835a2dfe46c | |
| type NumericChars = '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9'; | |
| type TupleLength<T extends any[]> = | |
| any[] extends T ? never : T['length']; | |
| // from microsoft/TypeScript#40336 | |
| type Split<S extends string, D extends string> = | |
| string extends S ? string[] : | |
| S extends '' ? [] : | |
| S extends `${infer T}${D}${infer U}` ? [T, ...Split<U, D>] : |
A compile-time 4-Bit Virtual Machine implemented in TypeScript's type system. Capable of running a sample 'FizzBuzz' program.
Syntax emits zero JavaScript.
type RESULT = VM<
[
["push", N_1], // 1
["push", False], // 2
["peek", _], // 3
Note:
When this guide is more complete, the plan is to move it into Prepack documentation.
For now I put it out as a gist to gather initial feedback.
If you're building JavaScript apps, you might already be familiar with some tools that compile JavaScript code to equivalent JavaScript code:
| // Just before switching jobs: | |
| // Add one of these. | |
| // Preferably into the same commit where you do a large merge. | |
| // | |
| // This started as a tweet with a joke of "C++ pro-tip: #define private public", | |
| // and then it quickly escalated into more and more evil suggestions. | |
| // I've tried to capture interesting suggestions here. | |
| // | |
| // Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_, | |
| // @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant, |
| var fs = require('fs'); | |
| var lame = require('lame'); | |
| var Speaker = require('speaker'); | |
| fs.createReadStream(process.argv[2]) | |
| .pipe(new lame.Decoder()) | |
| .on('format', function (format) { | |
| this.pipe(new Speaker(format)); | |
| }); |
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| /* | |
| Copyright (c) 2011 Andrei Mackenzie | |
| Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |