{"comment":{"url":"https://api.github.com/repos/panlanfeng/RFlavor.jl/comments/18977920","html_url":"https://github.com/panlanfeng/RFlavor.jl/commit/4837967d0cbd9241880062ddddd0afe5717e7e23#commitcomment-18977920","id":18977920,"user":{"login":"panlanfeng","id":1134797,"avatar_url":"https://avatars.githubusercontent.com/u/1134797?v=3","gravatar_id":"","url":"https://api.github.com/users/panlanfeng","html_url":"https://github.com/panlanfeng","followers_url":"https://api.github.com/users/panlanfeng/followers","following_url":"https://api.github.com/users/panlanfeng/following{/other_user}","gists_url":"https://api.github.com/users/panlanfeng/gists{/gist_id}","starred_url":"https://api.github.com/users/panlanfeng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/panlanfeng/subscriptions","organizations_url":"https://api.github.com/users/panlanfeng/orgs","repos_url":"https://api.github.com/users/panlanfeng/repos","events_url":"https://api.github.com/users/panlanfeng/events{/privacy}","received_events_url":"https://api.github.com/users/panlanfeng/received_events","type":"User","site_admin":false},"position":32,"line":32,"path":"src/matrix.jl","commit_id":"4837967d0cbd9241880062ddddd0afe5717e7e23","created_at":"2016-09-11T19:57:49Z","updated_at":"2016-09-11T19:57:49Z","body":"I should use `mod1`, not `div`. Corrected above.\r\n`reshape` is fast because it does not copy the matrix or vector, only changing number of rows. \r\nBut transpose can be very slow since it need to create a new matrix of transposed size. Try\r\n```\r\n x = rand(10000, 20000);\r\n@time x';\r\n```\r\n"}}
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