doxas

$ # 任意の <PREFIX> から始まるブランチを一括削除する
$ git branch | grep -E 'PREFIX.' | xargs -I % git branch -d %

doxas

$ # master と develop を除く merge 済みのブランチを一括削除する
$ git branch --merged master | grep -vE '^\*|master$|develop$' | xargs -I % git branch -d %

doxas

precision mediump float;

uniform sampler2D textureUnit;
uniform vec2      invResolution; // 1.0 / resolution

const float REDUCE_MIN = 1.0 / 128.0;
const float REDUCE_MUL = 1.0 / 8.0;
const float SPAN_MAX   = 8.0;
const vec3  LUMA = vec3(0.299, 0.587, 0.114);

doxas

/**
 * @param {vec2} coord - base texture coord
 * @param {vec2} view - resolution of viewport
 * @param {vec2} resource - resolution of resource
 * @return {vec2} like a `background-size: cover` on css
 */
vec2 cover(vec2 coord, vec2 view, vec2 resource){
    vec2 ratio = vec2(
        min((view.x / view.y) / (resource.x / resource.y), 1.0),
        min((view.y / view.x) / (resource.y / resource.x), 1.0)

doxas

function uuid(){
    // https://github.com/GoogleChrome/chrome-platform-analytics/blob/master/src/internal/identifier.js
    const chars = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.split('');
    for(let i = 0, j = chars.length; i < j; i++){
        switch(chars[i]){
            case 'x':
                chars[i] = Math.floor(Math.random() * 16).toString(16);
                break;
            case 'y':
                chars[i] = (Math.floor(Math.random() * 4) + 8).toString(16);

doxas

copyToClipboard(str){
    const t = document.createElement('textarea');
    t.value = str;
    document.body.appendChild(t);
    t.select();
    document.execCommand('copy');
    document.body.removeChild(t);
}

doxas

let isMobileDevice = (
    ua.indexOf('android') > -1 ||
    ua.indexOf('iphone') > -1 ||
    ua.indexOf('ipod') > -1 ||
    ua.indexOf('ipad') > -1 ||
    (ua.indexOf('macintosh') > -1 && 'ontouchend' in document)
);

doxas

function powerOfTwo(v){
    return (v & (v - 1)) === 0;
}
function nearPowerOfTwo(v){
    if(v <= 0){return 0;}
    let w = v;
    w = w | (w >> 1);
    w = w | (w >> 2);
    w = w | (w >> 4);
    w = w | (w >> 8);

doxas

function copyToClipboard(stringData){
    let t = document.createElement('textarea');
    t.value = stringData;
    document.body.appendChild(t);
    t.select();
    document.execCommand('copy');
    document.body.removeChild(t);
}

doxas

let t = document.createElement('textarea');
t.value = 'hogepiyo';
document.body.appendChild(t);
t.select();
document.execCommand('copy');
document.body.removeChild(t);