{"title":"Pattern Matching with Regular Expressions","authors":["John Mussman"],"thumbnail":"http:\/\/cdn.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching.png","videoUrl":"http:\/\/cdn.cs50.net\/","streamUrl":"rtmp:\/\/stream.cs50.net\/cfx\/st\/","video":{"240p (MP4)":{"height":240,"width":426.66665649414,"framerate":29.97,"bitrate":191855,"duration":1560,"path":"2012\/fall\/seminars\/pattern_matching\/pattern_matching-240p.mp4"},"360p (MP4)":{"height":360,"width":640,"framerate":29.97,"bitrate":638619,"duration":1560,"path":"2012\/fall\/seminars\/pattern_matching\/pattern_matching-360p.mp4"},"720p (MP4)":{"height":720,"width":1280,"framerate":29.97,"bitrate":1627348,"duration":1560,"path":"2012\/fall\/seminars\/pattern_matching\/pattern_matching-720p.mp4"},"1080p (MP4)":{"height":1080,"width":1920,"framerate":29.97,"bitrate":2628035,"duration":1560,"path":"2012\/fall\/seminars\/pattern_matching\/pattern_matching-1080p.mp4"}},"download":{"mp3":"http:\/\/downloads.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching.mp3","MP4 (240p)":"http:\/\/downloads.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-240p.mp4","MP4 (360p)":"http:\/\/downloads.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-360p.mp4","MP4 (720p)":"http:\/\/downloads.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-720p.mp4","MP4 (1080p)":"http:\/\/downloads.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-1080p.mp4"},"torrents":{"mp3":"http:\/\/torrents.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching.mp3","MP4 (240p)":"http:\/\/torrents.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-240p.mp4","MP4 (360p)":"http:\/\/torrents.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-360p.mp4","MP4 (720p)":"http:\/\/torrents.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-720p.mp4","MP4 (1080p)":"http:\/\/torrents.cs50.net\/2012\/fall\/seminars\/pattern_matching\/pattern_matching-1080p.mp4"},"srt":{"afr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/afr\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=1g0ed%2BLXBZZ9hSe3Y32NuZvSS9w%3D","alb":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/alb\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=LqrYWtxCk50gI9pKbcEBj7fp6mE%3D","ara":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/ara\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=Zq2cvYGybrOxB5j1ty%2FHm%2BivGiA%3D","aze":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/aze\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=%2Bcs7a%2ByLvqjs1%2Bwr%2FPPgwhn2Ghg%3D","baq":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/baq\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=4k9GgpL2OOtrudcxyrPYArRNynU%3D","bel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/bel\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=7N4Xcwnp84mS4YrM3V3prCV8VYc%3D","ben":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/ben\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=DZHohm0%2FpXlYy3CtiJOw2MyNBuo%3D","bul":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/bul\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=C6XuJHJex%2FFImBKzdld640JheNw%3D","cat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/cat\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=EJs0VJ5Wrl9r16cT0FZgGVcDh2M%3D","chi_hans":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/chi_hans\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=nEd0nllbde4VmZwaLkWeYSrXuPw%3D","chi_hant":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/chi_hant\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=xq6vWeKFV%2BC71qS7alwLjpYOmJ0%3D","cze":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/cze\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=MFyMsb%2Fmhe73m47wSlInvle8mZ8%3D","dan":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/dan\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=XfB1tM1X%2BHwzf4jXjd2u4Rf0Pc8%3D","dut":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/dut\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=41HCByMhjfGIc7iqzDh5zTevekc%3D","eng":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/eng\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=JYJ11P0nXSKl8TAVNhSvQ4W4LAs%3D","epo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/epo\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=Dan0enBINuAq7AQvuMyJYJwXZ0Q%3D","est":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/est\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=ox%2FkMplYW3rB4O4IqCzGSri263M%3D","fil":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/fil\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=WZvr0N1LRO1FJVsd6KsCZ4FQpk4%3D","fin":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/fin\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=OTjVmwqX2WoY8sYPOoImN%2Feieqg%3D","fre_fr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/fre_fr\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=risGdopZo%2BFL0DmQbzYb2B8m1dY%3D","geo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/geo\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=C0qSOjGhsr097e5LUV6t4a8fPP8%3D","ger":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/ger\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=a%2BcyDX2zqefhvIrtsJRuZcRwJ6M%3D","gle":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/gle\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=TGHB%2FPnuUnlAbJyT7T01f7Z5iHY%3D","glg":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/glg\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=8V7Qi33%2FMPtTMcNUFf8VgjmXXkA%3D","gre":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/gre\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=tGPfHq685lw8L%2BGmLpkbGbmSTPA%3D","guj":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/guj\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=s8MFQ0Rr7Ey8PK3RvTe5pOYgwqA%3D","hat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/hat\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=7S9a3vZHHfhrhl%2BvLAdoB1aHjLk%3D","heb":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/heb\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=duBQdCGU86ZXi3AWHFBoeE74jS0%3D","hin":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/hin\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=ExAw53jDFEKALikE3qL9u8fVQNI%3D","hun":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/hun\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=T5Ice9WOAYnWWAXdNZLv3nwOC4k%3D","ice":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/ice\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=6YfNjjCNmVKHMJcyk49I8BikzUc%3D","ind":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/ind\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=ulewkXqkCLYwFGs8rtkOPn6W8zw%3D","ita":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/ita\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=3nf0NF3ZDGEXUvX5fmhgRc%2FdQhI%3D","jpn":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/jpn\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=pHE9aX5Padj5CGhBC0o3NwaJeOw%3D","kan":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/kan\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=0HFePZ1CQ42q4s0FGOIGO1TF7aI%3D","kor":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/kor\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=C9wwR%2BLg9ht8PDt6m4SWX4Lv%2FS4%3D","lat":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/lat\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=%2BW9VLvpsf7N3eIqxfwQleYggcxw%3D","lav":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/lav\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=bzSKwczHM7g0nmX8hNiteZ6Ne3s%3D","lit":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/lit\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=6YKVgrDTN3si%2BG3Eo1KPuUBSHnE%3D","mac":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/mac\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=gSQM%2Fk7D2vy17pkmKLPjeI2%2Bk%2BY%3D","may":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/may\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=oNlpUbpVbtu%2BxJWhp86pdXA%2FVkI%3D","mlt":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/mlt\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=64nCwNTQFybdpjE%2F%2BhNQmkaSA64%3D","nor":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/nor\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=wyWxRv5n04b0Qdmzc0efYVgg2HI%3D","per":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/per\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=PPakLBjp9T7Qy6A4fUovCxyDifY%3D","pol":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/pol\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=d7x5z1QzTF1rOalp5XESJNieaKI%3D","por_pt":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/por_pt\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=tGPd3hDvu5YUkSIe%2BwLfH5IgbuM%3D","rum":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/rum\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=puWHgVZp%2B%2FLNZj1SQkQlx%2F2qTYU%3D","rus":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/rus\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=%2FbaVrL%2Bj53Z1N%2Bk%2FmT1Gc84ilWQ%3D","scc":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/scc\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=amJtTl3d%2Frul3RHzTIqKwWS9o0Y%3D","scr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/scr\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=DIg8wczfjarji5k412AHLIxRm%2Bw%3D","slo":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/slo\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=A%2BqU7DdKXAMeKAyV6oED7YL5aqI%3D","slv":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/slv\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=Bcv%2BxZrtUDM7sEnHj%2B%2Bf851cpHo%3D","spa":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/spa\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=IbMCjP0Y%2FR20%2BYyAVkOEu%2FQg7xM%3D","swa":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/swa\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=3lEeDKOULxc6UOWvMl4TyzmJ%2FbE%3D","swe":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/swe\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=JNW%2BJW9Hos6cqhg4GQDrvUTMYkA%3D","tam":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/tam\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=48YPTB9PN5jv3DpKMpgWMWUtkeE%3D","tel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/tel\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=jZh8%2BPyjYyOiyVyd%2BifBf7BJcJ0%3D","ukr":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/ukr\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=E7ZnaZhLlbCIROKjkh%2Bu6Q1rJvA%3D","urd":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/urd\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=xq83pvDbuTOAFpWVNYtGdDJyBYQ%3D","vie":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/vie\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=5eC%2BTz7hIu24O%2FM5CqJnyQbrqN8%3D","wel":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/wel\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=zZv2DmQLN%2Fbnd3pgV1ND4ByZCrU%3D","yid":"http:\/\/cdn.cs50.net.s3.amazonaws.com\/2012\/fall\/seminars\/pattern_matching\/lang\/yid\/pattern_matching.srt?response-cache-control=no-cache&AWSAccessKeyId=AKIAJXVDJ7CBFTKPYYPQ&Expires=1397767298&Signature=DZ%2Fo9tpLaBcOULJJRpqQio1GwUM%3D"}}