merge

Check if rows in one dataframe exist in another dataframe

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You can use merge with parameter indicator, then remove column Rating and use numpy.where: df = pd.merge(df1, df2, on=[‘User’,’Movie’], how=’left’, indicator=”Exist”) df.drop(‘Rating’, inplace=True, axis=1) df[‘Exist’] = np.where(df.Exist == ‘both’, True, False) print (df) User Movie Exist 0 1 333 False 1 1 1193 True 2 1 3 False 3 2 433 False 4 3 54 … Read more

Merging two Map with Java 8 Stream API

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@Test public void test14() throws Exception { Map<String, Integer> m1 = ImmutableMap.of(“a”, 2, “b”, 3); Map<String, Integer> m2 = ImmutableMap.of(“a”, 3, “c”, 4); Map<String, Integer> mx = Stream.of(m1, m2) .map(Map::entrySet) // converts each map into an entry set .flatMap(Collection::stream) // converts each set into an entry stream, then // “concatenates” it in place of the … Read more

The following untracked working tree files would be overwritten by merge, but I don’t care

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The problem is that you are not tracking the files locally but identical files are tracked remotely so in order to “pull” your system would be forced to overwrite the local files which are not version controlled. Try running git add * git stash git pull This will track all files, remove all of your … Read more