Initial data commit

Task/Associative-array-Merging/Raku/associative-array-merging.raku

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+# Show original hashes
+say my %base   = :name('Rocket Skates'), :price<12.75>, :color<yellow>;
+say my %update = :price<15.25>, :color<red>, :year<1974>;
+
+# Need to assign to anonymous hash to get the desired results and avoid mutating
+# TIMTOWTDI
+say "\nUpdate:\n", join "\n", sort %=%base, %update;
+# Same
+say "\nUpdate:\n", {%base, %update}.sort.join: "\n";
+
+say "\nMerge:\n", join "\n", sort ((%=%base).push: %update)».join: ', ';
+# Same
+say "\nMerge:\n", ({%base}.push: %update)».join(', ').sort.join: "\n";
+
+# Demonstrate unmutated hashes
+say "\n", %base, "\n", %update;