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Converting camel case to underscore case in ruby

Is there any ready function which converts camel case Strings into underscore separated string? 11 Answers ...
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Ruby capitalize every word first letter

...n each item in the array. You can then call join to turn that array into a string. The * ' ' is an alternative way to call join. You can think of it as multiplying the items in the array together to create a string. – Andrew Nov 15 '13 at 21:13 ...
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Is there a regular expression to detect a valid regular expression?

... / ^ # start of string ( # first group start (?: (?:[^?+*{}()[\]\\|]+ # literals and ^, $ | \\. # escaped characters | \[ (?:...
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in javascript, how can i get the last character in a string [duplicate]

... Since in Javascript a string is a char array, you can access the last character by the length of the string. var lastChar = myString[myString.length -1]; share ...
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Convert objective-c typedef to its string equivalent

...re represented as integers. So you need to write a function that returns a string given an enum value. There are many ways to do this. An array of strings such that the enum value can be used as an index into the array or a map structure (e.g. an NSDictionary) that maps an enum value to a string wor...
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Pad a number with leading zeros in JavaScript [duplicate]

... or at least not completely; it treats them as if their value is the empty string. Thus you get a copy of the zero character (or whatever "z" is) between each of the array elements; that's why there's a + 1 in there. Example usage: pad(10, 4); // 0010 pad(9, 4); // 0009 pad(123, 4); ...
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PHP string “contains” [duplicate]

What would be the most efficient way to check whether a string contains a "." or not? 3 Answers ...
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How to replace strings containing slashes with sed?

...one:g You can use any character as a delimiter that's not part of either string. Or, you could escape it with a backslash: s/\//foo/ Which would replace / with foo. You'd want to use the escaped backslash in cases where you don't know what characters might occur in the replacement strings (if t...
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Difference between == and ===

...ook at example: class Person : Equatable { let ssn: Int let name: String init(ssn: Int, name: String) { self.ssn = ssn self.name = name } static func == (lhs: Person, rhs: Person) -> Bool { return lhs.ssn == rhs.ssn } } P.S.: Since ssn(social s...
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Convert file: Uri to File in Android

...hat you want is... new File(uri.getPath()); ... and not... new File(uri.toString()); Note: uri.toString() returns a String in the format: "file:///mnt/sdcard/myPicture.jpg", whereas uri.getPath() returns a String in the format: "/mnt/sdcard/myPicture.jpg". ...