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Python integer division yields float
...=int ? What should I do, is there a new division operator or must I always cast?
5 Answers
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Is returning by rvalue reference more efficient?
...g by rvalue can be more efficient. std::move() is just used as an explicit cast to illustrate the point more clearly. It's not a code you would copy-paste into your project. It doesn't contradict top-voted answer, because there temporary object is created inside the function. Here returned object is...
What is the difference between char array and char pointer in C?
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static char __unnamed[] = "abc";
char *c = __unnamed;
Note the implicit cast from char[] to char *, which is always legal.
Then if you modify c[0], you also modify __unnamed, which is UB.
This is documented at 6.4.5 "String literals":
5 In translation phase 7, a byte or code of value zero i...
Why isn't vector a STL container?
...terface to some bit in memory and allows you to use standard operators and casts.
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What does the construct x = x || y mean?
...(null)
foo(undefined)
foo(0)
are not equivalent.
Double pipe (||) will cast the first argument to boolean and if resulting boolean is true - do the assignment otherwise it will assign the right part.
This matters if you check for unset parameter.
Let's say, we have a function setSalary that h...
Is there a difference between YES/NO,TRUE/FALSE and true/false in objective-c?
...o be careful with booleans in Objective-C.
To sum up, only exact @YES and casted value as @((BOOL)expression) are of __NSCFBoolean type and converted to true with JSON serialization.
Any other expressions like @(expression1 && expression2) (even @(YES && YES)) are of __NSCFNumber (i...
What does Class mean in Java?
...s<Foo>. That way you can create a new instance, for example, without casting: Foo foo = clazz.newInstance();
if you don't use generics at all, you'll get a warning at least (and not using generics is generally discouraged as it may lead to hard-to-detect side effects)
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What are five things you hate about your favorite language? [closed]
...ly typed, compared to, say, Python (e.g. you can assign integers to chars, cast anything to anything via void* pointers, etc.) It is statically typed instead of dynamically typed, and also requires explicit typing instead of type inference, but those are unrelated to strong v/s weak typing. [Random ...
Is JavaScript an untyped language?
...r
Strongly typed means there is a compiler, and it wants you an explicit cast from string to integer.
(int) "12345" * 1 === 12345
In either case, some compiler's features can implicitly alter the instruction during compile-time to do conversions for you, if it can determine that is the right th...
How would one write object-oriented code in C? [closed]
...; // This is a non-virtual call
Stack.push(st, thing1); // This is like casting *st to a Stack (which it already is) and doing the push
st->my_type.push(st, thing2); // This is a virtual call
}
I didn't do the destructor or delete, but it follows the same pattern.
this_is_here_as_an_exam...