How do you program differently in dynamic languages?

Question

How would someone who really knows how to take advantage of dynamic programming languages approach programming differently than someone working in a static language?

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Answer 1

Dynamic Languages can change the object at run time, you can add methods, properties...

One good example of Dynamic Languages magic is this Groovy code snippet which call a method on a webservice in just two lines of code:

def proxy = new SoapClient("http://localhost:6980/MathServiceInterface?wsdl");
def result = proxy.add(1.0, 2.0);

This is another Groovy snippet that extract data from XML:

def contacts = new XmlParser().parseText("Bahaa Zaid");
def myName = contacts.name[0].text();

You cannot do this in Static Languages. Dynamic Language can change the objects to reflect the actual runtime condition.