TILs - Fueling Curiosity, One Insight at a Time

At Codemancers, we believe every day is an opportunity to grow. This section is where our team shares bite-sized discoveries, technical breakthroughs and fascinating nuggets of wisdom we've stumbled upon in our work.

Published: Mar 5, 2019
Author: Revath

use :focus-within to keep the parent element visible when focus is on child. Helpful on making dropdown menu.

Published: Mar 4, 2019
Author: Revath

In jest.fn we can use mockFn.mockRejectedValue and mockFn.mockResolvedValue instead of mockFn.mockReturnValue(Promise.resolve({data: { message: "Failure", count: 1 }}); https://jestjs.io/docs/en/mock-function-api.html#mockfnmockresolvedvaluevalue

Published: Feb 20, 2019
Author: Goromlagche

in rails unscope doesnt used to work with joins/left_joins, but recently has been fixed and backported to 5.1 and 5.0

Published: Feb 15, 2019
Author: Goromlagche

its better to use date + Time.zone.utc_offset rather than Time.zone.parse(date.to_s) if you are worried about performance
https://gist.github.com/goromlagche/d0305f1bb72ea1d01372fce3c91553d1

Published: Feb 14, 2019
Author: Akash

"you can use serveo.net to get reusable public endpoints. Example: ssh -R github:80:localhost:4000 serveo.net"

Published: Jan 30, 2019
Author: Emil

you can use telepresence to connect to a k8s cluster network and do things like start a local debugging session. Here is how to use local elixir observer and debug remote pods in K8S

Code

# Install telepresence.
# Run this command to get an IEx shell connected to the cluster
telepresence --run iex --name debug@127.0.0.1 --cookie 
# Find all nodes which are part of the cluster and their IP addresses
:inet_res.getbyname('dockup-headless', :a)
# Connect to one of the nodes
Node.connect(:"dockup@")
# Start observer locally
:observer.start()

Published: Jan 20, 2019
Author: Goromlagche

a bash function to read k8 secrets https://gist.github.com/goromlagche/4415061ee8d6ec342fa967f7fc274296

Published: Jan 20, 2019
Author: Goromlagche

a bash function to read k8 secrets https://gist.github.com/goromlagche/4415061ee8d6ec342fa967f7fc274296

Published: Jan 12, 2019
Author: Iffyuva

Elixir refactoring if/else using pattern matching https://gist.github.com/iffyuva/6dbc3d3657e5b1e585c2ce2d53b6c973

Published: Jan 12, 2019
Author: Iffyuva

Elixir refactoring if/else using pattern matching https://gist.github.com/iffyuva/6dbc3d3657e5b1e585c2ce2d53b6c973

Showing 59 to 61 of 82 results

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