Articles

• #ruby

  Autocorrect 'Missing frozen string literal comment' warnings in Rubocop

  When faced with large numbers of warnings from Rubocop related to its FrozenStringLiteralComment rule, from a newly-linted project or perhaps due to large numbers of auto-generated files, there’s an easy fix to avoid correcting each file manually.

• #rails

  Fix Puma installation error: implicitly declaring library function 'isspace'

  Update

• #postgresql

  How to find duplicate column values in PostgreSQL

  Here’s a recipe for retrieving duplicate values in a SQL query (run on Postgres).

• #sql

  How to get multiple counts from one SQL query

  There are different methods for fetching multiple counts in SQL. One is to use subqueries to fetch individual counts:

• #react

  'Nothing was returned from render' React error

  The following React error may appear in different situations, possibly when using React Testing Library: