IO.foreach(name, sep=$/ [, open_args]) {|line| block } â nil
IO.foreach(name, limit [, open_args]) {|line| block } â nil
IO.foreach(name, sep, limit [, open_args]) {|line| block } â nil
IO.foreach(...) â an_enumerator
IO.foreach(name, limit [, open_args]) {|line| block } â nil
IO.foreach(name, sep, limit [, open_args]) {|line| block } â nil
IO.foreach(...) â an_enumerator
Class Public methods
Executes the block for every line in the named I/O port, where lines are separated by sep.
If no block is given, an enumerator is returned instead.
1 | IO.foreach("testfile") {|x| print "GOT ", x } |
produces:
1 2 3 4 | GOT This is line oneGOT This is line twoGOT This is line threeGOT And so on... |
If the last argument is a hash, it's the keyword argument to open. See
IO.read for detail.
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