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Task/Queue-Usage/Sidef/queue-usage.sidef

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+var f = FIFO();
+say f.empty;        # true
+f.push('foo');
+f.push('bar', 'baz');
+say f.pop;          # foo
+say f.empty;        # false
+
+var g = FIFO('xxx', 'yyy');
+say g.pop;          # xxx
+say f.pop;          # bar