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Virtual/pure virtual explained
What exactly does it mean if a function is defined as virtual and is that the same as pure virtual?
12 Answers
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Export from sqlite to csv using shell script
...ted a shell script that will be able to take the tables from a db file and convert them into csv files.
https://github.com/darrentu/convert-db-to-csv
Feel free to ask me any questions on my script :)
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Calling constructor from other constructor in same class
...cal instance of Lens which goes out of scope at the end of the constructor and is NOT assigned to "this". You need to use the constructor chaining syntax in Gishu's post to achieve what the question asks.
– Colin Desmond
May 6 '09 at 14:31
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Best way to implement Enums with Core Data
... kPaymentFrequencyWeekly = 3
} PaymentFrequency;
Then, declare getters and setters for your property. It's a bad idea to override the existing ones, since the standard accessors expect an NSNumber object rather than a scalar type, and you'll run into trouble if anything in the bindings or KVO sy...
Can two Java methods have same name with different return types? [duplicate]
...with different return type ? The return type of the methods are different and they are declared with the same method's name.
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Aren't promises just callbacks?
...d error callback for all occurred exceptions.
Not to mention having to convert things to promises.
That's quite trivial actually with good promise libraries, see How do I convert an existing callback API to promises?
s...
What is a proper naming convention for MySQL FKs?
... users(user_id);
I try to stick with the same field names in referencing and referenced tables, as in user_id in the above example. When this is not practical, I also append the referenced field name to the foreign key name.
This naming convention allows me to "guess" the symbolic name just by l...
Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
...answer :(, Can you please edit the post, so that i can remove the downvote and give the upvote?
– Shubham Sharma
Jul 24 at 17:32
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What does “fragment” mean in ANTLR?
...is somewhat akin to an inline function: It makes the grammar more readable and easier to maintain.
A fragment will never be counted as a token, it only serves to simplify a grammar.
Consider:
NUMBER: DIGITS | OCTAL_DIGITS | HEX_DIGITS;
fragment DIGITS: '1'..'9' '0'..'9'*;
fragment OCTAL_DIGITS: '...
What is the correct way to get a subarray in Scala?
I am trying to get a subarray in scala, and I am a little confused on what the proper way of doing it is. What I would like the most would be something like how you can do it in python:
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