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How is the AND/OR operator represented as in Regular Expressions?

...e the following situation: The correct solution for the word would be "part1, part2". The user should be able to enter either "part1" (answer 1), "part2" (answer 2) or "part1, part2" (answer 3). I now try to match the string given by the user with the following, automatically created, regex express...
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How to find the size of an array in postgresql

... 112 As vyegorov mentioned, array_length will do the trick. Or if you know that the array is 1-dim...
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How do I create directory if none exists using File class in Ruby?

... 154 You can use FileUtils to recursively create parent directories, if they are not already presen...
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Transform DateTime into simple Date in Ruby on Rails

... 167 DateTime#to_date does exist with ActiveSupport: $ irb >> DateTime.new.to_date NoMethodE...
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Switch statement: must default be the last case?

... 10 Answers 10 Active ...
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How to find nth occurrence of character in a string?

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How do I connect to a MySQL Database in Python?

... 1256 Connecting to MYSQL with Python 2 in three steps 1 - Setting You must install a MySQL dri...
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Find index of last occurrence of a sub-string using T-SQL

...ons found elsewhere work only so long as the text you are searching for is 1 character long. 22 Answers ...
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How can I force a hard reload in Chrome for Android

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How to print struct variables in console?

... Fruits []string `json:"fruits"` } res2D := &Response2{ Page: 1, Fruits: []string{"apple", "peach", "pear"}} res2B, _ := json.Marshal(res2D) fmt.Println(string(res2B)) That would print: {"page":1,"fruits":["apple","peach","pear"]} If you don't have any instance, then you need...