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Appropriate hashbang for Node.js scripts
I'm trying to create a script for node.js that will work in multiple environments. Particularly for me, I'm switching back and forth between OS X and Ubuntu. In the former, Node is installed as node , but in the latter it is nodejs . At the top of my script, I can have:
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How do I list the symbols in a .so file
How do I list the symbols being exported from a .so file? If possible, I'd also like to know their source (e.g. if they are pulled in from a static library).
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Python: using a recursive algorithm as a generator
...ns that, even for relatively small input, the sequences are several thousands, thus I would prefer to use my algorithm as a generator instead of using it to fill a list with all the sequences.
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What is the C# equivalent to Java's isInstance()?
I know of is and as for instanceof , but what about the reflective isInstance() method?
5 Answers
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How does one use rescue in Ruby without the begin and end block
I know of the standard technique of having a begin rescue end
5 Answers
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Rails: How to list database tables/objects using the Rails console?
I was wondering if you could list/examine what databases/objects are available to you in the Rails console. I know you can see them using other tools, I am just curious.
Thanks.
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How to indicate param is optional using inline JSDoc?
According to the JSDoc wiki for @param you can indicate a @param is optional using
4 Answers
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TypeError: sequence item 0: expected string, int found
I am attempting to insert data from a dictionary into a database. I want to iterate over the values and format them accordingly, depending on the data type. Here is a snippet of the code I am using:
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Count cells that contain any text
...hin a range.
Any cell that contain text, or numbers or something else should do a plus one in my result-cell.
6 Answers
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Python argparse ignore unrecognised arguments
Optparse, the old version just ignores all unrecognised arguments and carries on. In most situations, this isn't ideal and was changed in argparse. But there are a few situations where you want to ignore any unrecognised arguments and parse the ones you've specified.
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