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Java: how do I get a class literal from a generic type?
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You can't due to type erasure.
Java generics are little more than syntactic sugar for Object casts. To demonstrate:
List<Integer> list1 = new ArrayList<Integer>();
List<String> list2 = (List<String>)list1;
list2.add("foo"); // perfectly legal
The only in...
Is the “struct hack” technically undefined behavior?
...ous pointer arithmetic could then be made to trap - see e.g. CCured. On a more philosophical level, it doesn't matter whether no possible implementation could catch you, it's still undefined behavior (there are, iirc, cases of undefined behavior that would require an oracle for the Halting Problem ...
What goes into the “Controller” in “MVC”?
...n make a separate request, "give me the most recent data set", and thus be more pure, or the controller implicitly returns the new data set with the "delete" operation.
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Function overloading by return type?
Why don't more mainstream statically typed languages support function/method overloading by return type? I can't think of any that do. It seems no less useful or reasonable than supporting overload by parameter type. How come it's so much less popular?
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How to concatenate items in a list to a single string?
... to be joined; see the documentation, or this answer which goes into a bit more detail.
– Burhan Khalid
Apr 6 '14 at 6:53
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What's the difference between lists and tuples?
...ples have structure, lists have order.
Using this distinction makes code more explicit and understandable.
One example would be pairs of page and line number to reference locations in a book, e.g.:
my_location = (42, 11) # page number, line number
You can then use this as a key in a dictionar...
How to Create Multiple Where Clause Query Using Laravel Eloquent?
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In Laravel 5.3 (and still true as of 7.x) you can use more granular wheres passed as an array:
$query->where([
['column_1', '=', 'value_1'],
['column_2', '<>', 'value_2'],
[COLUMN, OPERATOR, VALUE],
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])
Personally I haven't found use-case for this ...
sudo echo “something” >> /etc/privilegedFile doesn't work
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How to convert a string from uppercase to lowercase in Bash? [duplicate]
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