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-rw-r--r--lib/tsort.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/tsort.rb b/lib/tsort.rb
index 0dd68c6b8a..21adeaabfe 100644
--- a/lib/tsort.rb
+++ b/lib/tsort.rb
@@ -78,9 +78,13 @@ TSort uses Hash internally.
--- tsort_each_node {|node| ...}
should be implemented by a extended class.
+ (({tsort_each_node})) is used to iterate for all nodes over a graph.
+
--- tsort_each_child(node) {|child| ...}
should be implemented by a extended class.
+ (({tsort_each_child})) is used to iterate for child nodes of ((|node|)).
+
== More Realistic Example
Very simple `make' like tool can be implemented as follows: