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What's the difference between size_t and int in C++?
...xamples I see a use of the type size_t where I would have used a simple int . What's the difference, and why size_t should be better?
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Call Go functions from C
I am trying to create a static object written in Go to interface with a C program (say, a kernel module or something).
4 An...
How do I use extern to share variables between source files?
... is its type); it does not allocate the
storage for the variable at that point.
A variable is defined when the compiler allocates the storage for
the variable.
You may declare a variable multiple times (though once is sufficient);
you may only define it once within a given scope.
A variable defin...
Can I set enum start value in Java?
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Java enums are not like C or C++ enums, which are really just labels for integers.
Java enums are implemented more like classes - and they can even have multiple attributes.
public enum Ids {
OPEN(100), CLOSE(200);
private final int id;
Ids(int id) { this.id = id; }
public int g...
64 bit OS下int占几个字节？ - C/C++ - 清泛网 - 专注C/C++及内核技术
64 bit OS下int占几个字节？int固定4字节，不要受64 bit的混淆。int是由编程语言设计决定的，不受编译器的影响。__int64才是8位的。另外，指针是受编译器 OS影响的，3...int固定4字节，不要受64 bit的混淆。int是由编程语言设计决定的...
/usr/include/c++/4.9/bits/stl_iterator_base_types.h:165:53: error: ‘i...
/usr/include/c++/4.9/bits/stl_iterator_base_types.h:165:53: error: ‘int’ is not a class, struct, or union type先看下面的代码(来自:SO)：#include <iostream>#include <cmath>#include <vector>using namespace std;double distance(int a, in...先看下面的代码(来自: SO)：
#include <i...
C# Java HashMap equivalent
Coming from a Java world into a C# one is there a HashMap equivalent? If not what would you recommend?
7 Answers
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Format date to MM/dd/yyyy in JavaScript [duplicate]
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@Ore4444, you are converting month to string before you add 1, that's why @Code Monkey says you are returning 15 instead of six. It should be var month = (1 + date.getMonth()).toString();
– Moses Machua
J...
Why sizeof int is wrong, while sizeof(int) is right?
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The following could be ambiguous:
sizeof int * + 1
Is that (sizeof (int*)) + 1, or (sizeof(int)) * (+1)?
Obviously the C language could have introduced a rule to resolve the ambiguity, but I can imagine why it didn't bother. With the language as it stands, a type...
“unpacking” a tuple to call a matching function pointer
...f values, which will later be used as arguments for a call to a function pointer which matches the stored types.
8 Answers
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