TILs - Fueling Curiosity, One Insight at a Time

If you have trouble booting after a routine update, just select your main hard drive as the startup disk and it will boot normally. More info here: https://jeroenmols.com/blog/2017/12/26/macosupdate/

accessing a deep nested object in javascript made easy https://github.com/facebookincubator/idx

Rails ActionController provides :stale? and :fresh_when methods which can be use to set HTTP_IF_NONE_MATCH and HTTP_IF_MODIFIED_SINCE headers on the browser. This helps the client to check whether the page has been modified. Response freshness is checked by matching Last-Modified and ETag from the server against the client request's HTTP_IF_MODIFIED_SINCE and HTTP_IF_NONE_MATCHheaders. If it matches, then the server responds with 304 (“not modified”) status code. This will make the client to make use of cached copy of the page - thus saving us from the time spent in generating the response.

rspec has a --bisect flag that helps to chase down order-dependent test failures. It will figure out the minimum number of tests when run in order will produce the test failure.

when rendering rails partial with collection, rails provides a counter variable which can be accessed by title of the partial followed _counter. For eg: if the partial is called apple, then counter variable is called apple_counter.
Reference: https://guides.rubyonrails.org/layouts_and_rendering.html#local-variables

Docker images for rails will be around 500Mb on Alpine linux. Sounds a lot. Whereas Alpine bases phoenix/elixir images are typically under 100Mb

as of webpack 4.x you can pass function for output.filename which will get the input chunk as it's param and return a string

"Don't add ! to your destructive (receiver-changing) methods' names,
unless you consider the changing to be "dangerous" and you have a
"non-dangerous" equivalent method without the !" http://davidablack.net/dablog.html#2007/8/15/bang-methods-or-danger-will-rubyist

Use DISABLE_DATABASE_ENVIRONMENT_CHECK env variable to get rid of those crazy migrations check introduced by Rails 5!