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How to elegantly rename all keys in a hash in Ruby? [duplicate]
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Just use mappings[k] || k instead of mappings[k] above and it will leave keys not in the mapping as is.
– Mladen Jablanović
Nov 9 '10 at 20:26
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Why is HTML5 input type datetime removed from browsers already supporting it?
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The only reason I can think of is browser vendors losing faith in the standard being approved, therefore removing the implementation from their code.
To support this thought: W3C just removed both datetime and datetime-local from their working draft.
Browser vendors will eventually drop support...
How to parse JSON using Node.js? [closed]
...hould I parse JSON using Node.js? Is there some module which will validate and parse JSON securely?
31 Answers
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Pandas read_csv low_memory and dtype options
...emory warning is because guessing dtypes for each column is very memory demanding. Pandas tries to determine what dtype to set by analyzing the data in each column.
Dtype Guessing (very bad)
Pandas can only determine what dtype a column should have once the whole file is read. This means nothing can...
private[this] vs private
...t very rich Java background I learnt to close everything (make it private) and open (provide accessors) if necessary. Scala introduces even more strict access modifier. Should I always use it by default? Or should I use it only in some specific cases where I need to explicitly restrict changing fiel...
How to get form field's id in Django?
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This answer did not work for me, and Will's above worked perfectly. I tried them back to back with instant feedback.
– eficker
Oct 30 '13 at 21:48
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How do I get user IP address in django?
...tem (e.g., in the case of Heroku: Get client's real IP address on Heroku)
And then just pass the request as argument to it;
get_client_ip(request)
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Recreating a Dictionary from an IEnumerable
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2016 now, and I still had to google this. You'd think that there would be a constructor for Dictionary that took a IEnumerable<KeyValuePair<TKey, TValue>> just like List<T> takes a IEnumerable<T>. Also there is ...
Why does Java allow us to compile a class with a name different than the file name?
I have a file Test.java and the following code inside it.
8 Answers
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What is the runtime performance cost of a Docker container?
I'd like to comprehensively understand the run-time performance cost of a Docker container. I've found references to networking anecdotally being ~100µs slower .
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