Articles

• #postgresql

  Failing fast when running PostgreSQL scripts

  When running scripts against Postgres with the psql client, errors will accumulate by default. This is good from the perspective of resiliency, but may not always be desirable behavior, especially with a long-running script.

• #rails

  How to create deprecation warnings in Rails

  Sometimes it is necessary to override inbuilt functionality of Rails (or other dependencies) by creating a monkey patch. However this may only be intended as a temporary solution, waiting on some future fix or upgrade to the framework.

• #shell

  Counting lines of code at the command line

  Here is a solution for counting lines of code using command line utilities:

• #jest

  Testing thrown exceptions with Jest

  Here’s a tip for testing asynchronous JavaScript functions that should throw exceptions with Jest.

• #rails

  Rerunning a specific ActiveRecord migration in Rails

  In production and team environments rerunning prior Rails database migrations is generally not recommended. However there are times when it can be useful, for example when revising a feature branch that has yet to be committed, based on a change to the data model.