Join
Join[l1, l2, ...] joins the lists into a single list.
Attributes[Join] := {Flat, OneIdentity, Protected}
Simple examples
In[1]:= Join[{a}, {b, c}] Out[1]= {a, b, c}
In[2]:= Join[] Out[2]= {}
In[3]:= Join[foo[a], foo[b, c]] Out[3]= foo[a, b, c]
Join[l1, l2, ...] joins the lists into a single list.
Attributes[Join] := {Flat, OneIdentity, Protected}
In[1]:= Join[{a}, {b, c}] Out[1]= {a, b, c}
In[2]:= Join[] Out[2]= {}
In[3]:= Join[foo[a], foo[b, c]] Out[3]= foo[a, b, c]