Some small awesome features of Ruby scripting language (especially for InfoNet and InfoWorks)

Use map with row_object_collections!

Generally row object collections are a lot faster to deal with as they only hold a reference to a value and not the data itself. However sometimes they can be frustrating to use, because they don't have common Ruby functions like map, select etc. For some methods we have built in methods to deal with this. For example: 

WSOpenNetwork#row_object_collection   #collection
WSOpenNetwork#row_objects             #array

WSNodeObject.us_links                 #collection
WSNodeObject.navigate("us_links")     #array

But in some examples there is no alternative. E.G.

WSOpenNetwork#row_object_collection_selection   #collection

Recently I discovered a way of obtaining these methods on any RowObjectCollection object! Here's how! We call the enum_for method on the parent object and parse in the symbol for the each method: 

new = WSApplication.current_network

net.row_object_collection_selection("cams_cctv_survey")                   #Collection
net.row_object_collection_selection("cams_cctv_survey").enum_for(:each)   #Enumerator

Enumerator gives us access to many more methods:

inspect
size
each
each_with_index
each_with_object
next
rewind
find
entries
select
sort
sort_by
reject
grep
collect
map
reduce
group_by
... and more! ...

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