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Best way to check for “empty or null value”
...y string is not different from any other string consisting of only spaces. All of these are folded to n spaces in char(n) per definition of the type. It follows logically that the above expressions work for char(n) as well - just as much as these (which wouldn't work for other character types):
coal...
JavaScript equivalent of PHP’s die
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This will not totally stop execution AFAIK, but only roughly around the throw. Specifics are very blurry but I'm pretty sure the script can keep running somewhere else.
– Rolf
Jan 29 '16 at 10:36
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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...etween types (such as int to float, or pointer to void*), and it can also call explicit conversion functions (or implicit ones). In many cases, explicitly stating static_cast isn't necessary, but it's important to note that the T(something) syntax is equivalent to (T)something and should be avoided ...
jQuery equivalent of JavaScript's addEventListener method
I'm trying to find the jQuery equivalent of this JavaScript method call:
7 Answers
7
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Interface/enum listing standard mime-type constants
...mons, jax, jboss, javax) for an interface or enum that lists the values of all the standard mime-type (aka content-type).
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Reference list item by index within Django template?
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The annoying thing is that I can't say {{ data.foo }}, where foo is a variable with an index value in it and not a property name.
– Mike DeSimone
Jan 10 '11 at 23:06
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How to create abstract properties in python abstract classes
In the following code, I create a base abstract class Base . I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod .
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What is the difference between const_iterator and non-const iterator in the C++ STL?
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const_iterators don't allow you to change the values that they point to, regular iterators do.
As with all things in C++, always prefer const, unless there's a good reason to use regular iterators (i.e. you want to use the fact that they're not c...
Getting “bytes.Buffer does not implement io.Writer” error message
...:
import "bufio"
import "bytes"
func main() {
var b bytes.Buffer
foo := bufio.NewWriter(&b)
}
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What's a standard way to do a no-op in python?
...e those if statements, but for readability I find it helps to include them all, so that if you are looking through the code you can see what happens as a result of each option. How do I code the no-op? Currently, I'm doing it like this:
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