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How to escape a JSON string containing newline characters using JavaScript?

...) method and replace all occurrences of \n with \\n. EDIT: As far as I know of, there are no well-known JS libraries for escaping all special characters in a string. But, you could chain the .replace() method and replace all of the special characters like this: var myJSONString = JSON.stringify(...
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How to find and return a duplicate value in array

... a = ["A", "B", "C", "B", "A"] a.detect{ |e| a.count(e) > 1 } I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set. Looking for faster solution? Here you go! def find_one_using_hash_map(arr...
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When should Flask.g be used?

...terns, as linked by Markus, explains some of the changes to g in 0.10: g now lives in the application context. Every request pushes a new application context, wiping the old one, so g can still be used to set flags per-request without change to code. The application context is popped after teardow...
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Why does Git say my master branch is “already up to date” even though it is not?

...rt too, so you can refer to that original copy as upstream/master. If you now make and commit some change(s) to some file(s), you're the only one with those changes. Meanwhile other people may use the original repository (from which you made your clone) to make other clones and change those clones...
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What is the difference between static func and class func in Swift?

...al. For more information. See nextD's answer below. Also x.dynamicType has now been replaced with type(of:x) – Honey Jan 16 '17 at 2:54  |  sh...
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Hidden Features of C#? [closed]

... makeHandler(1, 0); Note the chaining: (dx, dy) => (sender, e) => Now that's why I'm happy to have taken the functional programming class :-) Other than the pointers in C, I think it's the other fundamental thing you should learn :-) ...
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What is Java Servlet?

... (e.g. parsing an HTTP request, connection handling etc). One of the best-known open source servlet containers is Tomcat. share | improve this answer | follow ...
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ReactJS Two components communicating

... arrange those components. A few example scenarios that come to mind right now: <Filters /> is a child component of <List /> Both <Filters /> and <List /> are children of a parent component <Filters /> and <List /> live in separate root components entirely. Th...
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Can I install Python windows packages into virtualenvs?

...gs with psycopg2 for Windows? UPDATE As noted by Tritium21 in his answer nowadays you should use pip instead of easy_install. Pip can't install binary packages created by distutils but it can install binary packages in the new wheel format. You can convert from old format to the new one using whee...
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GroupBy pandas DataFrame and select most common value

I have a data frame with three string columns. I know that the only one value in the 3rd column is valid for every combination of the first two. To clean the data I have to group by data frame by first two columns and select most common value of the third column for each combination. ...