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Easy way to turn JavaScript array into comma-separated list?

...that into a comma-separated list? (I know how to iterate through the array and build the string myself by concatenation if that's the only way.) ...
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When should I use the Visitor Design Pattern? [closed]

...dmit, I just don't get it. I read the wikipedia article for the pattern and I understand its mechanics but I'm still confused as to when I'd use it. ...
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Find and Replace Inside a Text File from a Bash Command

What's the simplest way to do a find and replace for a given input string, say abc , and replace with another string, say XYZ in file /tmp/file.txt ? ...
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How do I use the new computeIfAbsent function?

...t without a helper method (but you won’t see the debugging output then). And even simpler, as it is a simple delegation to an existing method you could write: whoLetDogsOut.computeIfAbsent("snoop", String::isEmpty); This delegation does not need any parameters to be written. To be closer to the e...
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Output array to CSV in Ruby

.... If you don't specify this, it'll default to "rb" (read-only binary mode) and you would get an error when trying to add to your csv file. See ruby-doc.org/core-1.9.3/IO.html for a list of valid file modes in Ruby. – Dylan Markow Jul 16 '12 at 14:08 ...
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Add a new line in file?

... Check that you have "\n" and not '\n' – Marklar Dec 19 '12 at 11:12 add a comment  |  ...
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How to print VARCHAR(MAX) using Print Statement?

...u look at my code I am also using the @Pos variable to find the line break and print accordingly. So How could I use that in your code. – peter Oct 21 '11 at 14:11 ...
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JPA eager fetch does not join

... JPA's fetch strategy control? I can't detect any difference between eager and lazy. In both cases JPA/Hibernate does not automatically join many-to-one relationships. ...
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Reasons for using the set.seed function

...ion in R, before starting the program. I know it's basically used for the random number generation. Is there any specific need to set this? ...
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Relative imports in Python 3

... unfortunately, this module needs to be inside the package, and it also needs to be runnable as a script, sometimes. Any idea how I could achieve that? It's quite common to have a layout like this... main.py mypackage/ __init__.py mymodule.py myothermodule.py ...w...