Disclaimer: I'm super new to DynamoDB, so if you found I wrote something incorrect or stupid, just kindly send me a comment :)
- database -> tables -> items -> attributes
- db = a collection of tables
function slugify(text) | |
{ | |
return text.toString().toLowerCase() | |
.replace(/\s+/g, '-') // Replace spaces with - | |
.replace(/[^\w\-]+/g, '') // Remove all non-word chars | |
.replace(/\-\-+/g, '-') // Replace multiple - with single - | |
.replace(/^-+/, '') // Trim - from start of text | |
.replace(/-+$/, ''); // Trim - from end of text | |
} |
Magic words:
psql -U postgres
Some interesting flags (to see all, use -h
or --help
depending on your psql version):
-E
: will describe the underlaying queries of the \
commands (cool for learning!)-l
: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft
, elem.offsetTop
, elem.offsetWidth
, elem.offsetHeight
, elem.offsetParent
##Using Let's Encrypt certificates with AWS API Gateway
Before starting off with API Gateway set up it's worth mentioning that certificate configuration for this particular service is so far isn't well integrated, therefore different from other AWS services. Despite it using CloudFrount to serve on custom domains it won't let you customize distributions it creates, however all the limitations of CloudFront naturally apply to API Gateway. The most important in this case is the size of the key, which is limited by 2048 bit. Many tutorials provide ready to use terminal commands that have the key size preset at 4096 bit for the sake of better security. This won't work with API Gateway and you'll get an error message about certificate's validity or incorrect chain which won't suggest you the real cause of the issue. Another consideration is that to add a custom domain to API Gateway you have to have a certif
<!DOCTYPE html> | |
<html prefix="og: http://ogp.me/ns#"> | |
<head> | |
<!-- content-type, which overrides http equivalent header. Because of charset, this meta should be set at first. --> | |
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> | |
<!-- Overrides http equivalent header. This tells IE to use the most updated engine. --> | |
<meta http-equiv="X-UA-Compatible" content="IE=Edge"> | |
<!-- Tells crawlers how to crawl this page, and the role of this page. https://developer.mozilla.org/en-US/docs/Web/HTML/Element/meta --> | |
<meta name="robots" content="index, follow"> |
I've been playing guitar for over 30 years. I never took formal lessons - only ocassional ones targeted to a specific topic. I love the discovery process and the relationship I've created with the instrument.
Five years ago or so, I had an a-ha moment, which fundamentaly changed the way I approach my learning of the guitar. After internalizing all the content I consumed, I thing I've come up with a formula for learning both rhythm and lead guitar in a very streamlined and systematic fashion. This method will teach you how to find chords across the entire fretboard so you can create chord progresssions for your own songs, or to make it easier to figure out the chords of your favorite songs.
However, what I like the most about it is that it gets you ready to play lead guitar, without putting too much emphasis on the pentatonic scale. Also, it teaches the guitar from the standpoint of understanding its symetry, and dare I say, the mathematics
You may want a linter plugin to lint your code in Vim but you probably don't need it. At least try the built-in way before jumping on the plugin bandwagon.
autocmd FileType <filetype> setlocal makeprg=<external command>
This autocommand tells Vim to use <external command>
when invoking :make %
in a <filetype>
buffer. You can add as many similar lines as needed for other languages.