GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
#############################################################################
##
## ExamplesForHomalg.gi ExamplesForHomalg package Mohamed Barakat
## Simon Goertzen
## Markus Lange-Hegermann
##
## Copyright 2007-2008 Lehrstuhl B für Mathematik, RWTH Aachen
##
## Implementation stuff for ExamplesForHomalg.
##
#############################################################################
####################################
#
# global variables:
#
####################################
# a central place for configuration variables:
InstallValue( HOMALG_EXAMPLES,
rec(
OwnRingOrReadFile := 1
)
);
####################################
#
# global functions and operations:
#
####################################
## an easy way of calling the example script ExamplesForHomalg/examples/examples.g
InstallMethod( ExamplesForHomalg,
[ IsInt ],
function( d )
local directory, separator;
if IsBound( PackageInfo("ExamplesForHomalg")[1] ) and
IsBound( PackageInfo("ExamplesForHomalg")[1].InstallationPath ) then
directory := PackageInfo("ExamplesForHomalg")[1].InstallationPath;
else
directory := "./";
fi;
if IsBound( GAPInfo.UserHome ) then
separator := GAPInfo.UserHome{[1]};
else
separator := "/";
fi;
if Length( directory ) > 0 and directory{[Length( directory )]} <> separator then
directory := Concatenation( directory, separator );
fi;
HOMALG_EXAMPLES.OwnRingOrReadFile := d;
Read( Concatenation( directory, "examples", separator, "examples.g" ) );
end );
##
InstallMethod( ExamplesForHomalg,
[ ],
function( )
if IsBound( HOMALG_EXAMPLES.OwnRingOrReadFile ) and
IsPosInt( HOMALG_EXAMPLES.OwnRingOrReadFile ) then
ExamplesForHomalg( HOMALG_EXAMPLES.OwnRingOrReadFile );
else
ExamplesForHomalg( 1 );
fi;
end );