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What is the 'cls' variable used for in Python classes?
Why is cls sometimes used instead of self as an argument in Python classes?
5 Answers
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What is the “-d” in “npm -d install”?
I've seen some posts that refer to running npm with a -d argument. For example, this issue refers to doing npm -d install coffee-script . There are a few other pages that also refer to this syntax, including the install instructions for at least one npm package.
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What is the logic behind the “using” keyword in C++?
What is the logic behind the "using" keyword in C++?
1 Answer
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Postgres: How to do Composite keys?
I cannot understand the syntax error in creating a composite key. It may be a logic error, because I have tested many varieties.
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Are PostgreSQL column names case-sensitive?
I have a db table say, persons in Postgres handed down by another team that has a column name say, "first_Name" . Now am trying to use PG commander to query this table on this column-name.
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Django: Set foreign key using integer?
Is there a way to set foreign key relationship using the integer id of a model? This would be for optimization purposes.
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MongoDB with redis
Can anyone give example use cases of when you would benefit from using Redis and MongoDB in conjunction with each other?
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Why does “while(true)” without “Thread.sleep” cause 100% CPU usage on Linux but not on Windows?
I have created a simple program in java:
1 Answer
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Android: When is onCreateOptionsMenu called during Activity lifecycle?
I put a couple of breakpoints in onCreate (one at the beginning, and one at the end of the method), and I also put one at the beginning of onCreateOptionsMenu . The onCreate method is called first, and before it finishes onCreateOptionsMenu is called.
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Adding List.add() another list
I have an IEnumerable<TravelDetails> and I am trying to add the vales in the for -loop to a List<TravelDetails> . I keep getting the errors.
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