And you can use letter collections (as you might in a regular expression), for example, to list the files with a "c" or "o" extension, as shown in Listing 2.

并且您可以使用字母集合(就像您可能在正则表达式中使用的那样)，例如，用于列出具有“c”或“o”扩展名的文件，如清单2所示。

youdao

Songs from his collections were used in the movie "O Brother,Where Art Thou?"

VOA: special.2010.01.25

Jamie Oliver became the second-highest earner in the book world with his recipe collections, while memoirs from Peter Kay, Paul O'Grady and Jeremy Clarkson all feature in The Bookseller's top 100 books of the decade.

BBC: News - The noughties in literature

Famous artists like Georgia O'Keeffe and Frida Kahlo do appear in museum shows, but the permanent modern art collections of most major institutions are comprised largely of work by male artists.

WSJ: In the Art World, Women on the Verge