Tuesday, January 28, 2014

Rails4's Active Record where not nil

Since Rails 4.0 no more .where('column_name IS NOT NULL'). Instead, we now can use
.where.not(column_name: nil)
Yay!

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Useful commands for observe running JVM process

$ jcmd List running processes $ jinfo  Get details of a process $ jps -lvm List running processes with params