Add Show Public Methods With Pry as a ruby til

Author: jbranchaud

README.md

@@ -238,6 +238,7 @@ _310 TILs and counting..._
 - [Returning With Sequel](ruby/returning-with-sequel.md)
 - [Safe Navigation Operator](ruby/safe-navigation-operator.md)
 - [Set RVM Default Ruby](ruby/set-rvm-default-ruby.md)
+- [Show Public Methods With Pry](ruby/show-public-methods-with-pry.md)
 - [Squeeze Out The Extra Space](ruby/squeeze-out-the-extra-space.md)
 - [Summing Collections](ruby/summing-collections.md)
 - [Uncaught Exceptions In Pry](ruby/uncaught-exceptions-in-pry.md)

ruby/show-public-methods-with-pry.md

@@ -0,0 +1,17 @@
+# Show Public Methods With Pry
+
+Open up a [`pry`](https://github.com/pry/pry) session and use the `-m` flag
+with the `ls` command to show just the public methods for an object.
+
+```ruby
+> ls -m :hello
+Comparable#methods: <  <=  >  >=  between?
+Symbol#methods:
+  <=>  as_json      empty?    length              slice     to_sym
+  ==   capitalize   encoding  match               succ      upcase
+  ===  casecmp      id2name   next                swapcase
+  =~   downcase     inspect   pretty_print_cycle  to_proc
+  []   duplicable?  intern    size                to_s
+```
+
+[source](https://github.com/pry/pry/wiki/State-navigation#Ls)