| /** | |
| * disable clicked button before jQuery ajax request and enable after ajax request finished | |
| * @param {Function} ajaxFn | |
| * ajaxFn should return executed jQuery AJAX function | |
| * @returns {Function} | |
| * returned function should be placed in event listener of Element | |
| * | |
| * Usage: | |
| * $('#deactivate-btn').click(disableBtnDuringAjax(function(e) { | |
| * return $.get('/api/users', function (data) { |
| /** | |
| * @param {string} name | |
| * @returns {string|null} | |
| * getQueryParam('a') returns '1' on page http://domain.com/page.html?a=1&b=2 | |
| **/ | |
| function getQueryParam(name) { | |
| const q = window.location.search.match( | |
| new RegExp('[?&]' + name + '=([^&#]*)') | |
| ); | |
| return q && q[1]; |
| // https://csacademy.com/contest/round-51/task/manhattan-distances/ | |
| #include <iostream> | |
| #include <algorithm> | |
| #include <vector> | |
| using namespace std; | |
| int main() { | |
| int T, a, b, c, h; | |
| cin >> T; |
| // can try http://mathworld.wolfram.com/ConvexHull.html, but overkill.. | |
| #include <algorithm> | |
| #include <iostream> | |
| #include <vector> | |
| using namespace std; | |
| int Dist(pair<int, int> a, pair<int, int> b) { | |
| return (a.first - b.first) * (a.first - b.first) + | |
| (a.second - b.second) * (a.second - b.second); | |
| } |
| /* | |
| You are given a string S. Find a string T that has the most number of occurrences as a substring in S. | |
| If the solution is not unique, you should find the one with maximum length. If the solution is still not unique, find the smallest lexicographical one. | |
| cabdab | |
| ab | |
| cabcabc | |
| c |
| // https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect | |
| function handleScroll() { | |
| const position = document.getElementById('content').getBoundingClientRect() | |
| // check if the element is in the middle of viewport(window) | |
| if (position.top < window.innerHeight/2 && position.bottom > 0 && position.bottom > window.innerHeight/2) { | |
| // do what you want to do | |
| } | |
| } |
$ node_modules/webpack-dev-server/bin/webpack-dev-server.js webpack.config.js
This will raises errors like this.
ERROR in ./~/tunnel-agent/index.js
Module not found: Error: Can't resolve 'net' in '/Users/projects/frontend/node_modules/tunnel-agent'
@ ./~/tunnel-agent/index.js 3:10-24
@ ./~/request/lib/tunnel.js
@ ./~/request/request.js
| #!/bin/bash | |
| # Recursive utf-8 byte order mark removal | |
| # https://en.wikipedia.org/wiki/Byte_order_mark#Byte_order_marks_by_encoding | |
| # Place this file in the root of your site, add execute permission and run | |
| # Converts *.php, *.html, *.css, *.js files. | |
| # To add file type by extension, e.g. *.cgi, add '-o -name "*.cgi"' to the find command | |
| find ./ -name "*.php" -o -name "*.html" -o -name "*.css" -o -name "*.js" -o -name "*.sass" -type f | | |
| while read file |
| /* | |
| * This would be necessary If you have limited length textarea and sliced the input string. | |
| * because individual surrogate codes are useless and raise error in Python and broken character is ugly | |
| * (https://unicode-table.com/en/blocks/high-surrogates/) | |
| */ | |
| function SliceAndCleanInputStr (inputStr) { // inputStr = 'aaaaaa😄' | |
| var sliced = inputStrstr.slice(0, 7) // "aaaaaa�" | |
| return sliced.replace(/[\ud800-\udbff]/g, '') // "aaaaaa" | |
| } |
| const now = new Date(); | |
| const utcnow = Date.UTC( | |
| now.getUTCFullYear(), | |
| now.getUTCMonth(), | |
| now.getUTCDate(), | |
| now.getUTCHours(), | |
| now.getUTCMinutes(), | |
| now.getUTCMilliseconds() | |
| ); | |
| let utctmr = Date.UTC( |