syntax Archives - Page 7 of 15

Why is “extends T” allowed but not “implements T”?

Is there a special reason in Java for using always “extends” rather than “implements” for defining bounds of type parameters? For example: public ...

May 13, 2022
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`from … import` vs `import .` [duplicate]

This question already has answers here: Use ‘import module’ or ‘from module import’? (21 answers) Closed 7 years ago. I’m wondering if there’s ...

May 12, 2022
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Is there a difference between `continue` and `pass` in a for loop in python?

Is there any significant difference between the two python keywords continue and pass like in the examples for element in some_list: if not ...

May 12, 2022
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In Ruby, how do I skip a loop in a .each loop, similar to ‘continue’ [duplicate]

This question already has answers here: Equivalent of “continue” in Ruby (7 answers) Closed 5 years ago. In Ruby, how do I skip ...

May 11, 2022
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int a[] = {1,2,}; Why is a trailing comma in an initializer-list allowed?

Maybe I am not from this planet, but it would seem to me that the following should be a syntax error: int a ...

May 11, 2022
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How do I remove javascript validation from my eclipse project?

I am using eclipse on my project and while messing around with my eclipse settings, I turned on Javascript support. Now eclipse complains ...

May 11, 2022
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What is /dev/null 2>&1?

I found this piece of code in /etc/cron.daily/apf #!/bin/bash /etc/apf/apf -f >> /dev/null 2>&1 /etc/apf/apf -s >> /dev/null 2>&1 It’s flushing and reloading ...

May 11, 2022
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What does the `forall` keyword in Haskell/GHC do?

I’m beginning to understand how the forall keyword is used in so-called “existential types” like this: data ShowBox = forall s. Show s ...

May 11, 2022
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Case statement with multiple values in each ‘when’ block

The best way I can describe what I’m looking for is to show you the failed code I’ve tried thus far: case car ...

May 11, 2022
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What is the formal difference in Scala between braces and parentheses, and when should they be used?

What is the formal difference between passing arguments to functions in parentheses () and in braces {}? The feeling I got from the ...

May 11, 2022
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