add nextflow d30e48d

nextflow/docs/snippets/tap.nf

@@ -0,0 +1,9 @@
+channel.of( 'a', 'b', 'c' )
+    .tap { log1 }
+    .map { v -> v * 2 }
+    .tap { log2 }
+    .map { v -> v.toUpperCase() }
+    .view { result -> "Result: $result" }
+
+log1.view { v -> "Log 1: $v" }
+log2.view { v -> "Log 2: $v" }