Control flow: Difference between revisions

Revision as of 03:34, 31 July 2025

Revision as of 18:36, 9 August 2025

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# {{note_label|while|7|a}} There is no special construct, since the <code>while</code> function can be used for this.

# {{note_label|user|8|a}} There is no special construct, but users can define general loop functions.

# {{note_label|loop_foreach|9|a}} The [[C++11]] standard introduced the [[C++11#Range-based for loop|range-based for]]. In the [[Standard Template Library|STL]], there is a <code>std::for_each</code> [[template (programming)|template]] function which can iterate on STL [[Container (data structure)|containers]] and call a [[unary function]] for each element.<ref>[httphttps://www.sgi.com/tech/stl/for_each.html for_each]. Sgi.com. Retrieved on 2010-11-09.</ref> The functionality also can be constructed as [[C preprocessor#Macro definition and expansion|macro]] on these containers.<ref>[http://boost-sandbox.sourceforge.net/libs/foreach/doc/html/ Chapter 1. Boost.Foreach] {{Webarchive|url=https://web.archive.org/web/20100129070613/http://boost-sandbox.sourceforge.net/libs/foreach/doc/html/ |date=2010-01-29}}. Boost-sandbox.sourceforge.net (2009-12-19). Retrieved on 2010-11-09.</ref>

# {{note_label|count_loop_eiffel|10|a}} Count-controlled looping is effected by iteration across an integer interval; early exit by including an additional condition for exit.

# {{note_label|retry_in_eiffel|11|a}} Eiffel supports a reserved word <code>retry</code>, however it is used in [[Exception handling#Exception handling based on design by contract|exception handling]], not loop control.