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Underscore vs Double underscore with variables and methods [duplicate]
...urther since there are a lot of other people who need help I was wondering if somebody could elaborate the differences further.
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How to get instance variables in Python?
...in Python to get an array of all a class' instance variables? For example, if I have this code:
10 Answers
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How do I put variables inside javascript strings?
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This is now (2017) the correct answer. Be aware that you will need Babel in your toolchain to support older browsers.
– superluminary
Sep 13 '17 at 8:17
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MySQL: determine which database is selected?
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@cwallenpoole how about now?
– Nordle
Oct 23 '18 at 13:00
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show 1 more comment
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Swift: declare an empty dictionary
...ict = [:] // ok, I'm done with it
In the last example the dictionary is known to have a type Dictionary<String, String> by the first line. Note that you didn't have to specify it explicitly, but it has been inferred.
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Check if $_POST exists
I'm trying to check whether a $_POST exists and if it does, print it inside another string, if not, don't print at all.
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Swift native base class or NSObject
...hich extent runtime introspection will be added to the language, I do not know. Method interception will likely become only possible if the method explicitly allows it. This is my guess, but only the language designers within Apple really know where they are really heading.
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Split data frame string column into multiple columns
...ks hadley, very convinient method, but there is one thing can be improved, if there is NA in the original column, after separation it will become sevaral empty string in result columns, which is unwanted, I want to keep the NA still NA after separation
– cloudscomputes
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Table name as variable
...swering the question for readers in the future, not just the person asking now. Please edit your answer to add explanations and give an indication of what limitations and assumptions apply. From Review
– double-beep
May 20 at 11:04
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Instance attribute attribute_name defined outside __init__
...assed to the parent through Super. This makes extending some classes very difficult, because the parent class will operate on the child specific class attributes in ways that are undesireable. This is why I have ignored this particular warning myself. I also like your idea about using None and initi...