September 2013
Intermediate to advanced
548 pages
12h 25m
English
Content preview from Programming Erlang, 2nd Edition
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A Find Utility
As a final example, we’ll use file:list_dir
and file:read_file_info to make a general-purpose
“find” utility.
The main entry point to this module is as follows:
| | lib_find:files(Dir, RegExp, Recursive, Fun, Acc0) |
The arguments are as follows:
Dir-
The directory name to start the file search in.
RegExp-
A shell-style regular expression to test the files we have found. If the files we encounter match this regular expression, then
Fun(File, Acc)will be called, whereFileis the name of the file that matches the regular expression. Recursive = true | false-
A flag that determines whether search should recurse into the subdirectories of the current directory in the search path.
Fun(File, AccIn) -> AccOut-
A function that is applied to the ...
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