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Remove rows with all or some NAs (missing values) in data.frame

... tidyr has a new function drop_na: library(tidyr) df %>% drop_na() # gene hsap mmul mmus rnor cfam # 2 ENSG00000199674 0 2 2 2 2 # 6 ENSG00000221312 0 1 2 3 2 df %>% drop_na(rn...
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Why is subtracting these two times (in 1927) giving a strange result?

...in Shanghai. See this page for details of 1927 in Shanghai. Basically at midnight at the end of 1927, the clocks went back 5 minutes and 52 seconds. So "1927-12-31 23:54:08" actually happened twice, and it looks like Java is parsing it as the later possible instant for that local date/time - hence ...
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How do I clear this setInterval inside a function?

...igger(markers[timedCount], "click"); timedCount++; }, 5000 ); }; var id = intervalTrigger(); Then to clear the interval: window.clearInterval(id); share | improve this answer | ...
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Assert a function/method was not called using Mock

... like mock.assert_called_with and mock.assert_called_once_with , but I didn't find anything like mock.assert_not_called or something related to verify mock was NOT called . ...
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How to get HTTP Response Code using Selenium WebDriver

...lenium2/WebDriver and want to test if HTTP Request returns an HTTP 403 Forbidden. 9 Answers ...
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Error: 10 $digest() iterations reached. Aborting! with dynamic sortby predicate

... Please check this jsFiddle. (The code is basically the same you posted but I use an element instead of the window to bind the scroll events). As far as I can see, there is no problem with the code you posted. The error you mentioned normally occ...
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What happens if you call erase() on a map element while iterating from begin to end?

...; while(pm_it != port_map.end()) { if (pm_it->second == delete_this_id) { pm_it = port_map.erase(pm_it); } else { ++pm_it; } } C++03 Erasing elements in a map does not invalidate any iterators. (apart from iterators on the element that was deleted) Actu...
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delete_all vs destroy_all?

...ach to delete records from a table. For instance, I have a user whose user ID is across many tables. I want to delete this user and every record that has his ID in all tables. ...
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Re-sign IPA (iPhone)

...d us issues was the Entitlements file, if you have one, must match the app id provided by Apple. Since we were changing the bundle id, the entitlements did not match. The app would run, but the keychain would clear after each run. – tjg184 Aug 24 '11 at 17:39...
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HTML File Selection Event

...rk if the user picks the same file more than once in a row since the file didn't change. – bob0the0mighty Oct 26 '16 at 15:21  |  show 2 more ...