Andrew Cooke | Contents | Latest | RSS | Previous | Next

C[omp]ute

Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

Personal Projects

Choochoo Training Diary

Last 100 entries

SSL Payment Reminder; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; Bitte aktualisieren Sie Ihre Kreditkartendaten, um Unterbrechungen zu vermeiden; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; Weekend Vibes: Time to Recharge and Refresh!; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=; =?UTF-8?B?VGhlIGJlc3QgY3VzdG9taXplZCBmcmVpZ2h0IHNvbHV0aW9uIGZyb20gRWFzZSBmcmVpZ2h0?=; =?UTF-8?B?RXhjbHVzaXZlIEVhc2VGcmVpZ2h0IEZyZWlnaHQgU2VydmljZXMgdGFpbG9yZWQganVzdCBmb3IgeW91?=

© 2006-2017 Andrew Cooke (site) / post authors (content).

The Theory of Classification - A Course on OO Type Systems

From: "andrew cooke" <andrew@...>

Date: Tue, 28 Feb 2006 19:50:30 -0300 (CLST) 

By A J H Simons - http://www.dcs.shef.ac.uk/~ajhs/publish.html
Journal of Object Technology - http://www.jot.fm

1: Perspectives on Type Compatibility
http://www.jot.fm/issues/issue_2002_05/column5
http://www.jot.fm/issues/issue_2002_05/column5.pdf

2: The Scratch-Built Typechecker
http://www.jot.fm/issues/issue_2002_07/column4
http://www.jot.fm/issues/issue_2002_07/column4.pdf

3: Object Encodings and Recursion
http://www.jot.fm/issues/issue_2002_09/column4
http://www.jot.fm/issues/issue_2002_09/column4.pdf

4: Object Types and Subtyping
http://www.jot.fm/issues/issue_2002_11/column2
http://www.jot.fm/issues/issue_2002_11/column2.pdf

5: Axioms, Assertions and Subtyping
http://www.jot.fm/issues/issue_2003_01/column2
http://www.jot.fm/issues/issue_2003_01/column2.pdf

Part 6: The Subtyping Inquisition
http://www.jot.fm/issues/issue_2003_03/column2
http://www.jot.fm/issues/issue_2003_03/column2.pdf

7: A Class is a Family of Types
http://www.jot.fm/issues/issue_2003_05/column2
http://www.jot.fm/issues/issue_2003_05/column2.pdf

8: Classification and Inheritance
http://www.jot.fm/issues/issue_2003_07/column4
http://www.jot.fm/issues/issue_2003_07/column4.pdf

9: Inheritance and Self-Reference
http://www.jot.fm/issues/issue_2003_11/column2
http://www.jot.fm/issues/issue_2003_11/column2.pdf

10: Method Combination and Super-Reference
http://www.jot.fm/issues/issue_2004_01/column4
http://www.jot.fm/issues/issue_2004_01/column4.pdf

11: Adding Class Types to Object Implementations
http://www.jot.fm/issues/issue_2004_03/column1
http://www.jot.fm/issues/issue_2004_03/column1.pdf

12: Building the Class Hierarchy
http://www.jot.fm/issues/issue_2004_05/column2
http://www.jot.fm/issues/issue_2004_05/column2.pdf

13: Template Classes and Genericity
http://www.jot.fm/issues/issue_2004_07/column2
http://www.jot.fm/issues/issue_2004_07/column2.pdf

14: Modification and Objects like Myself
http://www.jot.fm/issues/issue_2004_09/column2
http://www.jot.fm/issues/issue_2004_09/column2.pdf

15: Mixins and the Superclass Interface
http://www.jot.fm/issues/issue_2004_11/column1
http://www.jot.fm/issues/issue_2004_11/column1.pdf

16: Rules of Extension and the Typing of Inheritance
http://www.jot.fm/issues/issue_2005_01/column2
http://www.jot.fm/issues/issue_2005_01/column2.pdf

17: Multiple Inheritance and the Resolution of Inheritance Conflicts
http://www.jot.fm/issues/issue_2005_03/column2
http://www.jot.fm/issues/issue_2005_03/column2.pdf

18: Polymorphism Through the Looking Glass
http://www.jot.fm/issues/issue_2005_05/column1
http://www.jot.fm/issues/issue_2005_05/column1.pdf

19: The Proliferation of Parameters
http://www.jot.fm/issues/issue_2005_07/column4
http://www.jot.fm/issues/issue_2005_07/column4.pdf

20: The Modular Checking of Classtypes
http://www.jot.fm/issues/issue_2005_09/column1
http://www.jot.fm/issues/issue_2005_09/column1.pdf

Andrew

Comment on this post