Add get_value to Table to allow easy single cell reading.

Fix missing imports.

distribution/lib/Standard/Base/0.0.0-dev/src/Network/HTTP/Response.enso

@@ -15,6 +15,9 @@ import project.Network.HTTP.Response_Body.Response_Body
 import project.Network.HTTP.Response_Body.Throw_Unsupported_Error
 import project.Network.URI.URI
 import project.Nothing.Nothing
+import project.System.File.Existing_File_Behavior.Existing_File_Behavior
+import project.System.File.File
+import project.System.File.Generic.Writable_File.Writable_File
 import project.System.File_Format.Auto_Detect
 import project.System.File_Format.File_Format
 import project.System.File_Format.Infer

distribution/lib/Standard/Table/0.0.0-dev/src/Data/Table.enso

@@ -286,6 +286,28 @@ type Table
             _ -> Error.throw (Illegal_Argument.Error "expected 'selector' to be either a Text or an Integer, but got "+(Meta.get_simple_type_name selector)+".")
         if java_column.is_nothing then if_missing else Column.Value java_column
 
+    ## ALIAS get cell, cell value
+       ICON select_column
+       Gets a value from the table.
+
+       Arguments:
+       - selector: The name or index of the column.
+       - index: The index of the value to get within the column.
+       - if_missing: The value to use if the selector isn't present.
+
+       > Example
+         Get the names of all of the items from the shop inventory.
+
+             import Standard.Examples
+
+             example_at = Examples.inventory_table.get_value "item_name" 4
+    @selector Widget_Helpers.make_column_name_selector
+    @index (t-> Widget.Numeric_Input minimum=0 maximum=t.row_count-1)
+    get_value : Text | Integer -> Integer -> Any -> Column | Any
+    get_value self selector=0 index=0 ~if_missing=Nothing =
+        col = self.get selector if_missing=Nothing
+        if col.is_nothing then if_missing else col.get index if_missing
+
     ## GROUP Standard.Base.Selections
        ICON select_column
        Gets the first column.