| /** 把中文转换成拼音数组后，如果有多音字，枚举所有可能的组合 | |
| * 示例： | |
| * [ [ 'a' ], | |
| * [ 'b', 'c', 'd' ], | |
| * [ 'e', 'f' ], | |
| * [ 'g' ] ] | |
| * 使用getResult方法将会返回： | |
| * ["abeg", "abfg", "aceg", "acfg", "adeg", "adfg"] | |
| */ |
| git filter-branch -f --commit-filter ' | |
| if [ "$GIT_COMMITTER_NAME" = "yehao" ]; | |
| then | |
| GIT_COMMITTER_NAME="Lingzheng"; | |
| GIT_AUTHOR_NAME="Lingzheng"; | |
| GIT_COMMITTER_EMAIL="lingzheng.yh@taobao.com"; | |
| GIT_AUTHOR_EMAIL="lingzheng.yh@taobao.com"; | |
| git commit-tree "$@"; | |
| else | |
| git commit-tree "$@"; |
| /** | |
| * Convert an image to a base64 encoded value | |
| * @param {string} url - The url of the image which has correct Access-Control-Allow-Origin response header | |
| * @param {function} callback - callback with one parameter containing the base64 encoded value | |
| * @param {string} [outputFormat] - image/png or image/jpeg or image/webp(Chrome) | |
| */ | |
| function convertImgToBase64(url, callback, outputFormat){ | |
| var img = new Image() | |
| img.crossOrigin = 'Anonymous' | |
| img.onload = function() { |
| function rgbToXyz(r, g, b) { | |
| r /= 255 | |
| g /= 255 | |
| b /= 255 | |
| if (r > 0.04045) r = Math.pow(((r + 0.055) / 1.055), 2.4) | |
| else r = r / 12.92 | |
| if (g > 0.04045) g = Math.pow(((g + 0.055) / 1.055), 2.4) | |
| else g = g / 12.92 |
| # vb, minrate, maxrate are optional | |
| # also there're other options, check the man page | |
| qmelt path_to_mlt.xml -consumer avformat:output.mp4 vb=1200k minrate=500k maxrate=1900k |
| var traps = { | |
| get(target, propName, receiver) { | |
| const val = Reflect.get(target, propName, receiver); | |
| if (typeof val === 'object' && val !== null) { | |
| return new Proxy(val, traps); | |
| } | |
| else { | |
| return val; | |
| } | |
| }, |
| # 下载安装 depot_tools | |
| git clone 'https://chromium.googlesource.com/chromium/tools/depot_tools.git' | |
| export PATH="${PWD}/depot_tools:${PATH}" | |
| # 下载 skia | |
| git clone https://skia.googlesource.com/skia.git | |
| cd skia | |
| python2 tools/git-sync-deps |
| # Replace 34 from select=eq(n\,34) with any frame number. Frame starts from 0. | |
| ffmpeg -vcodec libvpx-vp9 -i input_file.webm -pix_fmt rgba -vf "select=eq(n\,34)" -vframes 1 output_file.png | |
| # To generate a png file for each frame, use something like "frames/%04d.png" as the output file name |
| function nthIndex(str, pat, n){ | |
| let i= -1; | |
| while (n-- && i++ < str.length) { | |
| i = str.indexOf(pat, i); | |
| if (i < 0) break; | |
| } | |
| return i; | |
| } | |
| function lastNthIndex(str, pat, n) { |
git log -Sword
git log -Gword-G by default accepts a regex, while -S accepts a string, but it can be modified to accept regexes using the --pickaxe-regex.-S finds commits where the number of occurrences of "word" changed, while -G finds commits where "word" appears in the diff.-S<regex> --pickaxe-regex and -G<regex> do not do exactly the same thing.