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How to define “type disjunction” (union types)?
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edited May 23 '17 at 12:10
Community♦
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answered Aug 18 '10 at 2:36
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What does the C++ standard state the size of int, long type to be?
...e of basic C++ types.
I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler.
24 Answers
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Difference between std::result_of and decltype
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3
@RobertMason: Those arguments can be retrieved using std::declval, like the code I've shown above. Of course, this is ugly :)
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How do I safely pass objects, especially STL objects, to and from a DLL?
...undamental datatypes have the same sizes regardless of whether your app is 32-bit or 64-bit. However, since the size of a given datatype is enforced by the compiler, not by any standard (all the standard guarantees is that 1 == sizeof(char) <= sizeof(short) <= sizeof(int) <= sizeof(long) &l...
What is the fastest integer division supporting division by zero no matter what the result is?
... movl %eax, %ecx
popl %ebp
movl %edx, %eax
sarl $31, %edx
idivl %ecx
ret
As this turned out to be such a popular question and answer, I'll elaborate a bit more. The above example is based on programming idiom that a compiler recognizes. In the above case a boole...
JavaScript OOP in NodeJS: how?
...n other file:
var Animal = require("./animal.js");
var john = new Animal(3);
If you want a "sub class" then inside mouse.js:
var _super = require("./animal.js").prototype,
method = Mouse.prototype = Object.create( _super );
method.constructor = Mouse;
function Mouse() {
_super.constru...
Deadly CORS when http://localhost is the origin
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BeauBeau
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26
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二维码生成使用指导 · App Inventor 2 中文网
...CARD 格式，扫码后手机会提示「添加联系人」：
when 按钮_生成名片.Click() {
二维码生成1.GenerateQRCode(join("MECARD:N:", 文本输入框_姓名.Text, ";TEL:", 文本输入框_电话.Text, ";EMAIL:", 文本输入框_邮箱.Text, ";;"), 垂直布局_二维码)
}
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What does @: (at symbol colon) mean in a Makefile?
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edited Dec 22 '11 at 23:50
answered Dec 22 '11 at 23:23
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