Ruby/Range/each

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A sub range

(1..10).each {|x| print x if x==3..x==5 }

Prints "34". Flips when x == 3 and flops when x==4

(1..10).each {|x| print x if x==3...x>=3 } # Prints "34"

Prints "3". Flips and flops back when x==3

(1..10).each {|x| print x if x==3..x>=3 }