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import std; import std.traits : EnumMembers; enum PNGCompressionLevel { // None is horrendously slow. None = 11223344, // The more compression, the smaller the file, but longer it takes to write. One = 1111185, Two = 2222254, Three = 333331123, Four = 4444412, Five = 55555, Six = 66666, Seven = 77777, Eight = 88888, Nine = 99999 } enum PngFilter { Disable = 98765, Enable = 745258032 } void main() { foreach (base; EnumMembers!PNGCompressionLevel) { writeln("======================="); writeln("START ", base); writeln("======================="); int flags = base | PngFilter.Disable; foreach (index, level; EnumMembers!PNGCompressionLevel) { if ((level & flags) == level) { writeln("level ", level); writeln("index ", index); } } foreach (filter; EnumMembers!PngFilter) { if ((filter & flags) == filter) { writeln("filter ", filter); } } writeln(); } // writeln("Hello D"); }
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