Re^2: Using map to Add a Line Breaks to a List

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Re^3: Using map to Add a Line Breaks to a List by Aristotle (Chancellor) on Mar 05, 2005 at 08:04 UTC
As !1 explained: a successful pattern match in list context returns a list of captured matches, or an empty list if it didn't match. That's why your own `map { /(.+)\./ }` works — map provides list context to the block, so the pattern match returns the captured text. What I did is simply unconditionally add a `"\n"` to that list. So if the list was `"foo.txt", "bar.bmp", "baz.pdf"` [download] then the result is `"foo", "\n", "bar", "\n", "baz", "\n"` [download] which prompts print to duly produce the desired result. Makeshifts last the longest.	[reply] [d/l] [select]
Re^3: Using map to Add a Line Breaks to a List by !1 (Hermit) on Mar 05, 2005 at 06:17 UTC
It's due to the capturing regex in list context. This returns a list of captured strings. Map then passes this list and the "\n" to print. Since $, = $\ = "", your output works the way it does. Of course, this will print blank lines if your filename doesn't contain a period.	[reply]
Re^4: Using map to Add a Line Breaks to a List by Aristotle (Chancellor) on Mar 05, 2005 at 07:56 UTC
As will several other solutions. Good catch. Makeshifts last the longest.	[reply]