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Re: About features


From: Andreas Röhler
Subject: Re: About features
Date: Wed, 06 Mar 2013 11:48:04 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130215 Thunderbird/17.0.3

Am 06.03.2013 11:08, schrieb Xue Fuqiao:
In (info "(elisp) Coding Conventions"):

    * Put a call to `provide' at the end of each separate Lisp file.
      *Note Named Features::.

    * If a file requires certain other Lisp programs to be loaded
      beforehand, then the comments at the beginning of the file should
      say so.  Also, use `require' to make sure they are loaded.  *Note
      Named Features::.

Why should we use `provide' and `require'?  Is 
`load'/`load-library'/`load-file' enough?  Thanks.


IMHO `provide' delivers a kind of city-map with street-names, which exists, 
before you will visit a street.
Also require, before you a looking for the location of a certain building, 
checks if the
street-in-my-example exists.



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