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Full Discussion: Purpose of empty Class
Top Forums Programming Purpose of empty Class Post 302227986 by deepthi.s on Friday 22nd of August 2008 11:25:15 AM
Old 08-22-2008
Purpose of empty Class

class A
{};

int main()
{
A a;
}

What is the purpose of such empty classes in C++?Why is it allowed in the language specification?
 

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HXSELECT(1)							  HTML-XML-utils						       HXSELECT(1)

NAME
hxselect - extract elements that match a (CSS) selector SYNOPSIS
hxselect [ -i ] [ -c ] [ -l language ] [ -s separator ] selector DESCRIPTION
hxselect reads a well-formed XML document and outputs elements that match the CSS selector that is given as an argument. For example hxselect ol li:first-child selects the first li (list item in XHTML) in an ol (ordered list). The command operates on the standard input. Assumes that class selectors (".foo") refer to an attribute called "class". Assumes that ID selectors ("#foo") refer to an attribute called "id". OPTIONS
The following options are supported: -i Match case-insensitively. Useful for HTML and some other SGML-based languages. -c Print content only. Without -c, the start and end tag of the matched element are printed as well; with -c only the contents of the matched element are printed. -l language Sets the default language, in case the root element doesn't have an xml:lang attribute (default: none). Example: -l en -s separator A string to print after each match (default: empty). Accepts C-like escapes. Example: -s ' ' to print an empty line after each match. -? Show command usage. OPERANDS
The following operand is supported: selector A selector. Most selectors from CSS level 3 are supported, with the exception of pseudo-classes, pseudo-elements and selectors with last- in their name. 6.x 10 Jul 2011 HXSELECT(1)
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