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What is the difference between ? and Object in Java generics?
...me String");
All of the above method calls will result in a compile-time error because Java doesn't know what the Value type of the HashMap inside map is.
You can still get a value out of the hash map. Although you "don't know the value's type," (because you don't know what type of hash map is i...
Python: split a list based on a condition?
...where it's needed, thus reducing the likelihood for introducing typos/user error. Nice solution. Thanks!
– cod3monk3y
Nov 16 '13 at 21:08
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Enums and Constants. Which to use when?
...you could have trace levels as an int with values 0, 1, 2 or as an enum as error, warning and info.
Enum's also have the ability to be used as bitwise operators, i.e. FontStyle.Bold | FontStyle.Italic would give you bold and italic fonts.
...
Why does this code segfault on 64-bit architecture but work fine on 32-bit?
... be int). With the cast, both would compile and the latter would result in errors when sizeof(int) != sizeof(void *).
– user395760
Sep 25 '11 at 12:31
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How can I access an internal class from an external assembly?
...
string value = field.GetValue(tag);
Use the power wisely. Don't forget error checking. :)
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Plotting time in Python with Matplotlib
...ere no one has actually TRIED using a scatter plot - it doesn't work. Type Error - invalid type promotion.
– dwanderson
Oct 5 '16 at 16:21
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What is the most pythonic way to check if an object is a number?
...omething, you generally have to try something like:
try: 0 + x
except TypeError: canadd=False
else: canadd=True
The presence of __add__ per se tells you nothing useful, since e.g all sequences have it for the purpose of concatenation with other sequences. This check is equivalent to the definiti...
Downcasting shared_ptr to shared_ptr?
...e base class. Implicit casting like this may become the source of bugs and errors.
-Update: If the type is not polymorphic, std::static_pointer_cast may be used.
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Undo git stash pop that results in merge conflict
... #2 will not work if there are unmerged paths, it will instead output the error described here: stackoverflow.com/questions/5483213/…
– Étienne
Apr 30 '15 at 14:25
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Return array in a function
... @David: thanks, I got the misimpression from the Comeau message error: function returning array is not allowed which occurs if you leave out the outer parens in the non-typedef syntax. Fortunately, today I reviewed the right-left rule for another question and managed to construct the righ...