Differences

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--- glossary:glossary_i [2022/01/26 09:47] – [Include Guard] WortingUK
+++ glossary:glossary_i [2022/01/26 10:42] – [Insulfrog] WortingUK
@@ Line 33: / Line 33: @@
 ===== Include Guard =====
-A method of preventing a C or C++ header source file, from being included more than once by other files. It uses 'compiler directives' ''#'' to do this.
+A method of preventing a C or C++ header source file (.h or .hpp), from being included more than once by other files. It uses 'compiler directives' ''#'' to do this.
 ''#ifndef _FILENAME_H_''
@@ Line 75: / Line 75: @@
-Description used by UK track manufacturer, PECO, to denote turnouts manufactured with an insulated crossing (frog). This avoids the need for polarity switching for the crossing at the expense of poorer current collection for locomotives.
+Description used by UK track manufacturer, PECO, to denote turnouts manufactured with an insulated common crossing, AKA frog. This avoids the need for polarity switching for the crossing at the expense of poorer current collection for locomotives. AKA dead frog.