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How to make connection to Postgres via Node.js
...Postgres database.
The interface in node.js that I used can be found here https://github.com/brianc/node-postgres
var pg = require('pg');
var conString = "postgres://YourUserName:YourPassword@localhost:5432/YourDatabase";
var client = new pg.Client(conString);
client.connect();
//queries are que...
Code Golf - π day
...
@Load: 5.1.2.2.1/1: The function called at program startup is named main. It shall be defined … or in some other implementation-defined manner. So that's because the implementation can accept this form.
– kennytm
...
Normalizing mousewheel speed across browsers
...elX : pX,
pixelY : pY };
}
The source code can be found here: https://github.com/facebook/fixed-data-table/blob/master/src/vendor_upstream/dom/normalizeWheel.js
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Vertically centering a div inside another div [duplicate]
...sed (50%) instead of (-50%) on translateY...
– jumps4fun
Apr 13 '15 at 11:50
4
I love this soluti...
Find rows that have the same value on a column in MySQL
...* FROM member WHERE email = (Select email From member Where login_id = john123@hotmail.com)
This will return all records that have john123@hotmail.com as a login_id value.
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App Inventor 2 数学代码块 · App Inventor 2 中文网
...用 隐私策略和使用条款 技术支持 service@fun123.cn
Using HTML5/Canvas/JavaScript to take in-browser screenshots
...ent's entire desktop using getUserMedia():
Have a look at this example:
https://www.webrtc-experiment.com/Pluginfree-Screen-Sharing/
The client will have to be using chrome (for now) and will need to enable screen capture support under chrome://flags.
...
Summarizing multiple columns with dplyr? [duplicate]
...u want to summarize only certain columns, use summarise_at or summarise_if functions.
Alternatively, the purrrlyr package provides the same functionality:
library(purrrlyr)
df %>% slice_rows("grp") %>% dmap(mean)
#> # A tibble: 3 x 5
#> grp a b c d
#> <int>...
Can a variable number of arguments be passed to a function?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
数据存储组件 · App Inventor 2 中文网
...，详细可以去各自的网站上查看中文文档。网站如下：
https://tinywebdb.cn/
https://tinywebdb.appinventor.space/ 经过测试，单个键值的大小不可超过9000字节，否则可能保存失败。
属性
服务地址
指定Web服务的 URL，默认值是 http://tin...