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Should have subtitle controller already set Mediaplayer error Android

... When the MediaPlayer starts playing a music (or other source), it checks if there is a SubtitleController and shows this message if it's not set. It doesn't seem to care about if the source you want to play is a music or video. Not sure why he did that. Short answer: Don't care about this "Except...
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what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?

... Following are the three commands which appears same but have minute differences hadoop fs {args} hadoop dfs {args} hdfs dfs {args} hadoop fs <args> FS relates to a generic file system which can point to any file systems like local, HDFS etc. So this can be used when you are d...
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How to find all occurrences of a substring?

...t() for m in re.finditer('test', 'test test test test')] #[0, 5, 10, 15] If you want to find overlapping matches, lookahead will do that: [m.start() for m in re.finditer('(?=tt)', 'ttt')] #[0, 1] If you want a reverse find-all without overlaps, you can combine positive and negative lookahead in...
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What exceptions should be thrown for invalid or unexpected parameters in .NET?

... message. What they don’t do well is that they don’t tell you, why specifically it failed. Thanks to STW (ex Yoooder) again for the comments. In response to your followup, I would throw an ArgumentOutOfRangeException. Look at what MSDN says about this exception: ArgumentOutOfRangeExcepti...
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Resolve conflicts using remote changes when pulling from Git remote

... If you truly want to discard the commits you've made locally, i.e. never have them in the history again, you're not asking how to pull - pull means merge, and you don't need to merge. All you need do is this: # fetch from th...
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Grouping functions (tapply, by, aggregate) and the *apply family

... ?apply). There are enough of them, though, that beginning useRs may have difficulty deciding which one is appropriate for their situation or even remembering them all. They may have a general sense that "I should be using an *apply function here", but it can be tough to keep them all straight at fi...
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Get full path without filename from path that includes filename

... testing File.Exists() and/or Directory.Exists() on your path first to see if you need to call Path.GetDirectoryName share | improve this answer | follow | ...
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Is there a more elegant way of adding an item to a Dictionary safely?

... add key/object pairs to a dictionary, but I of course need to first check if the key already exists otherwise I get a " key already exists in dictionary " error. The code below solves this but is clunky. ...
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How to configure slf4j-simple

... Actually it (defaultLogLevel) works.Just found I was modifying the program in a wrong folder ;-) And defaultlog doesn't work. So you probably want to edit your answer though I've accepted it – Gelin Luo Jan 27 '13 at 10:08 ...
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How to make button look like a link?

...a link using CSS. The changes are done but when I click on it, it shows as if it's pushed as in a button. Any idea how to remove that, so that the button works as a link even when clicked? ...