How can one use send with +=?
a = 20; a.send "+=", 10
undefined method `+=' for 20:Fixnum
a = 20; a += 10
=> 30
How can one use send with += ? a = 20; a.send +=, 10
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How can one use send with +=?
a = 20; a.send "+=", 10
undefined method `+=' for 20:Fixnum
a = 20; a += 10
=> 30
I’m afraid you cannot.
+=is not a method, but rather syntactic sugar.See http://www.ruby-doc.org/docs/ProgrammingRuby/html/tut_expressions.html
It says
Best you can do is: