(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
-- show running queries (pre 9.2) | |
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query | |
FROM pg_stat_activity | |
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' | |
ORDER BY query_start desc; | |
-- show running queries (9.2) | |
SELECT pid, age(clock_timestamp(), query_start), usename, query | |
FROM pg_stat_activity | |
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' |
stats = Sidekiq::Stats.new | |
stats.queues | |
stats.enqueued | |
stats.processed | |
stats.failed |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)
First one found from of
Command Line
pry -r ./config/app_init_file.rb
- load your app into a pry session (look at the file loaded by config.ru)pry -r ./config/environment.rb
- load your rails into a pry sessionDebugger
$ uname -r
Attention: the list was moved to
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This page is not maintained anymore, please update your bookmarks.
// ⚠ IMPORTANT: this is old and doesn't work for many different edge cases but I'll keep it as-is for any of you want it | |
// ⚠ IMPORTANT: you can find more robust versions in the comments or use a library implementation such as lodash's `merge` | |
// Merge a `source` object to a `target` recursively | |
const merge = (target, source) => { | |
// Iterate through `source` properties and if an `Object` set property to merge of `target` and `source` properties | |
for (const key of Object.keys(source)) { | |
if (source[key] instanceof Object) Object.assign(source[key], merge(target[key], source[key])) | |
} |
⇐ back to the gist-blog at jrw.fi
Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.
I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.
This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso