Over the couple of months there have been a bunch of smaller releases to packages in the tidyverse . This includes: forcats 0.2.0, for working with factors. readr 1.1.0, for reading flat-files from disk. stringr 1.2.0, for manipulating strings. tibble 1.3.0, a modern re-imagining of the data frame. This blog post summarises the most important new features, and points to the full release notes where you can learn more. (If you’ve never heard of the tidyverse before, it’s an set of packages that are designed to work together to help you do data science. The best place to learn all about it is R for Data Science .) forcats 0.2.0 forcats has three new functions: as_factor() is a generic version of as.factor(), which creates factors from character vectors ordered by appearance, rather than alphabetically. This ensures means that as_factor(x) will always return the same result, regardless of the current locale. fct_other() makes it easier to convert selected levels to “other”: See the full list of other changes in the release notes . stringr 1.2.0 This release includes a change to the API: str_match_all() now returns NA if an optional group doesn’t match (previously it returned “”). This is more consistent with str_match() and other match failures. There are three new features: In str_replace(), replacement can now be a function. The function is once for each match and its return value will be used as the replacement. New str_which() mimics grep() A new vignette ( vignette("regular-expressions") ) describes the details of the regular expressions supported by stringr. The main vignette ( vignette("stringr") ) has been updated to give a high-level overview of the package. See the full list of other changes in the release notes . readr 1.1.0 readr gains two new features: All write_*() functions now support connections. This means that that you can write directly to compressed formats such as .gz, bz2 or .xz (and readr will automatically do so if you use one of those suffixes). write_csv ( iris , "iris.csv.bz2" ) parse_factor(levels = NULL) and col_factor(levels = NULL) will produce a factor column based on the levels in the data, mimicing factor parsing in base R (with the exception that levels are created in the order seen). See the full list of other changes in the release notes . tibble 1.3.0 tibble has one handy new function: deframe() is the opposite of enframe(): it turns a two-column data frame into a named vector. df - tibble ( x = c ( "a" , "b" , "c" ) , y = 1 : 3 ) deframe ( df ) # a b c # 1 2 3
(CNN) -- Ukraine released 67 people Sunday who were detained for participating in violent clashes after pro-Russian protesters stormed the police headquarters in Odessa, demanding they be let go. "Based on the decision taken by Odessa's regional prosecutor's office and due to the demands of the protesters, 67 people previously detained for participating in mass disturbances on May 2nd in Odessa were released Sunday," said a statement on the Ukrainian Interior Ministry's website. The local prosecutor's office immediately denied it was involved in the decision. The choice to release the detainees, it said in a Sunday statement, was made by police after officers failed to fulfill their duties. The prosecutor's office said it has opened a criminal investigation into their actions. Earlier, hundreds of pro-Russian activists shouting , "Odessa is a Russian city, one for all and all for one," attacked the police headquarters, forcing open its gate and breaking windows as they called for the release of their detained comrades. In a tense scene filled with arguments -- but with no shots fired -- the separatists took down the Ukrainian flag and persuaded the officers to release the detainees, according to a CNN team on the ground. The crowd cheered as the detainees left the police compound, and many were embraced by friends and relatives. Elsewhere in Odessa, hundreds of pro-Ukrainian supporters marched to a trade union building where a fire had previously broken out. They held a memorial there. The protesters demanded an explanation for why the pro-Russian detainees were released. A pro-Ukrainian demonstrator replaced a Russian flag on the union building with a Ukrainian one. There were no reports of violence.
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