Info Catalog eintr: Counting Words eintr: Top eintr: Readying a Graph

eintr: Words in a defun

 
 14 Counting Words in a ‘defun’
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 Our next project is to count the number of words in a function
 definition.  Clearly, this can be done using some variant of
 ‘count-words-example’.  Counting via Repetition and Regexps
 Counting Words.  If we are just going to count the words in one
 definition, it is easy enough to mark the definition with the ‘C-M-h’
 (‘mark-defun’) command, and then call ‘count-words-example’.
 
    However, I am more ambitious: I want to count the words and symbols
 in every definition in the Emacs sources and then print a graph that
 shows how many functions there are of each length: how many contain 40
 to 49 words or symbols, how many contain 50 to 59 words or symbols, and
 so on.  I have often been curious how long a typical function is, and
 this will tell.
 

Menu

 
· Divide and Conquer
· Words and Symbols           What to count?
· Syntax                      What constitutes a word or symbol?
· count-words-in-defun        Very like ‘count-words-example’.
· Several defuns              Counting several defuns in a file.
· Find a File                 Do you want to look at a file?
· lengths-list-file           A list of the lengths of many definitions.
· Several files               Counting in definitions in different files.
· Several files recursively   Recursively counting in different files.
· Prepare the data            Prepare the data for display in a graph.
 

Info Catalog eintr: Counting Words eintr: Top eintr: Readying a Graph