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Non-type template parameters
...), the objects must have static storage duration and linkage (external pre C++11, internal or external in C++11), so that pointers to them can be created at compile time.
– Theodore Murdock
Jan 29 '16 at 20:40
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What is the difference between NULL, '\0' and 0?
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Note: This answer applies to the C language, not C++.
Null Pointers
The integer constant literal 0 has different meanings depending upon the context in which it's used. In all cases, it is still an integer constant with the value 0, it is just described in different way...
vector::at vs. vector::operator[]
... its boundary checking, which is also discussed in similar questions like C++ Vector at/[] operator speed or ::std::vector::at() vs operator[] << surprising results!! 5 to 10 times slower/faster! . I just don't understand what the at() method is good for.
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Why don't Java Generics support primitive types?
... @DanyalAytekin - In fact, Java generics are NOT handled like C++ templates at all ...
– Stephen C
Mar 26 '12 at 1:32
22
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Downcasting shared_ptr to shared_ptr?
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@Tim Sylvester: but, C++ is not a "perfect" OO language! :-) down-casts have their place in a non-perfect OO language
– Steve Folly
Aug 31 '09 at 22:17
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Threading in a PyQt application: Use Qt threads or Python threads?
...Python manages the execution between threads), you release it when you run C++ code. There is no difference at all.
– Lukáš Lalinský
Oct 29 '09 at 12:05
1
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How can you find the height of text on an HTML canvas?
... while(!last && r) {
r--;
for(c = 0; c < width; c++) {
if(data[r * width * 4 + c * 4 + 3]) {
last = r;
break;
}
}
}
// Find the first line with a non-white pixel
while(r) {
r--;
fo...
Difference between `const shared_ptr` and `shared_ptr`?
I'm writing an accessor method for a shared pointer in C++ that goes something like this:
4 Answers
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地图组件（高德地图） · App Inventor 2 中文网
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Pass Variables by Reference in Javascript
...ert("x is " + x + ", y is " + y); // "x is 1, y is 2"
In a language like C++, it's possible to do that because that language does (sort-of) have pass-by-reference.
edit — this recently (March 2015) blew up on Reddit again over a blog post similar to mine mentioned below, though in this case abo...