Metaprogramming

Programs that write programs

"Metaprogramming began with taking drugs in the company of dolphins."

#!/bin/bash# metaprogram (generative programming)echo '#!/bin/bash' >programfor ((I=1; I<=992; I++)); do echo "echo $I" >>programdonechmod +x program

Metaprogramming in Ruby

Metaprogramming in Ruby

Avoiding a Bad Trip Keep method_missing

short and simple. Use method.send instead

of eval. restrict untrusted access. respond_to? Document

metaprogramming well.

More Methods

alias_methodinstance_evalclass_evaldefine_method

Usage of Metaprogramming

ActiveRecordTestUnit, rSpecCamping