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export type V3D = [number, number, number]
export type V2D = [number, number]

// degree should be multiply of 90
// axis: 0 = x, 1 = y, 2 = z
function rotatePoint(point:V3D, axis: number, degree: number) : V3D {
    const [x, y, z] = point
    const d = (degree % 360 + 360) % 360 // 0, 90, 180, 270
    const s = d === 90? 1 : (d === 270? -1 : 0)
    const c = d === 0? 1 : (d === 180? -1 : 0)

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ae29937 Add gn flag to control mitigations for untrusted code
6b30393 [turbofan] Kill transition-kind source map in load elimination.
48d436b [test] Add "trusted" testing variant to a subset of bots
bbcdb1e Update V8 DEPS.
055aa9b Beautify help output of flag names
05fe364 [wasm] Fix memory size dcheck in WasmContext
c22737a [turbofan] Make dangerous bitcasts effectful.
a97298b Use --untrusted-code-mitigations flag also for JS
2b4cc83 [builtins] Port EnqueueMicrotask to CSA.
204441b [wasm] Make some fields const in WasmGraphBuilder

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--keep @**.MainDex class * {
-  *;
-}
-
 -keepclasseswithmembers class * {
   public static ** asInterface(android.os.IBinder);
 }
 
-# Required when code coverage is enabled.
--keep class com.vladium.** {

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#pragma once

#include <stdint.h>

struct crc32
{
	static void generate_table(uint32_t(&table)[256])
	{
		uint32_t polynomial = 0xEDB88320;
		for (uint32_t i = 0; i < 256; i++) 

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function GetWordOutline(docfilename) {
    /** Get word document outlines
     *  @tag dev
     *
     *  @param {filename} docfilename - .doc(x) file
     *
     */

    var word = new ActiveXObject("Word.Application");
    var doc = word.Documents.Open(docfilename, false, true);

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; 这个snippet实现在EMACS中左键点击用缺省浏览器打开，右键点击用FIREFOX打开。

; 先要把org mode的右键功能禁用。(注意org mode 的mouse-3跟mouse-1并不一样，看你能否接受）
(add-hook 'org-mode-hook
          (lambda () (org-defkey org-mouse-map [mouse-3] nil)))

; 建一个function绑定到mouse-3
(add-to-list 'exec-path "c:/Program Files (x86)/Mozilla Firefox/")
(defun browse-url-at-mouse-with-firefox (event)
  "browse the url with firefox"