Migrations are a way to make database changes or updates, like creating or dropping tables, as well as updating a table with new columns with constraints via generated scripts. We can build these scripts via the command line using knex command line tool.
To learn more about migrations, check out this article on the different types of database migrations!
| find $DIR -iname '*.js' -exec sed -i "1 i\'use strict';\n" {} \; |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| body.loading #splash { | |
| opacity: 1; | |
| } | |
| #splash { | |
| position: absolute; | |
| top: 0; |
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
| var parser = document.createElement('a'); | |
| parser.href = "http://example.com:3000/pathname/?search=test#hash"; | |
| parser.protocol; // => "http:" | |
| parser.hostname; // => "example.com" | |
| parser.port; // => "3000" | |
| parser.pathname; // => "/pathname/" | |
| parser.search; // => "?search=test" | |
| parser.hash; // => "#hash" | |
| parser.host; // => "example.com:3000" |
