Re: Why?

2. Definition and Etymology bar /bar/ n. [JARGON] 1. The second metasyntactic variable, after foo and before baz.

     "Suppose we have two functions: FOO and BAR.  FOO calls BAR...."

2. Often appended to foo to produce foobar. foo /foo/ 1. interj. Term of disgust. 2. Used very generally as a sample name for absolutely anything, esp.

     programs and files (esp. scratch files).

3. First on the standard list of metasyntactic variables used in

     syntax examples (bar, baz, qux, quux, corge, grault, garply,
     waldo, fred, plugh, xyzzy, thud). [JARGON]

     When used in connection with `bar' it is generally traced to the
     WW II era Army slang acronym FUBAR (`Fucked Up Beyond All
     Repair'), later modified to foobar.  Early versions of the Jargon
     File [JARGON] interpreted this change as a post-war
     bowdlerization, but it now seems more likely that FUBAR was itself
     a derivative of foo' perhaps influenced by German furchtbar'
    (terrible) - `foobar' may actually have been the original form.

See: http://www.ietf.org/rfc/rfc3092.txt ;) bvr. Alberto Wagner wrote:

Why everyone uses $foo or $foobar as examples?