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Can I call a constructor from another constructor (do constructor chaining) in C++?
...).
The syntax is slightly different from C#:
class Foo {
public:
Foo(char x, int y) {}
Foo(int y) : Foo('a', y) {}
};
C++03: No
Unfortunately, there's no way to do this in C++03, but there are two ways of simulating this:
You can combine two (or more) constructors via default parameters...
How do I extract text that lies between parentheses (round brackets)?
...
Honestly, this should've been selected as the answer.
– Pat Lindley
Jan 11 '13 at 18:58
1
...
Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...erent type than the one seen by the compiler, for example:
struct S {
char a;
int b;
char c;
};
struct S_head {
char a;
};
struct S_ext {
char a;
int b;
char c;
int d;
char e;
};
struct S s;
struct S_head *head = (struct S_head*)&s;
fn1(head);
struct S_ex...
T-SQL datetime rounded to nearest minute and nearest hours with using functions
...
declare @dt datetime
set @dt = '09-22-2007 15:07:38.850'
select dateadd(mi, datediff(mi, 0, @dt), 0)
select dateadd(hour, datediff(hour, 0, @dt), 0)
will return
2007-09-22 15:07:00.000
2007-09-22 15:00:00.000
The above just truncates the seconds and minutes, producing the resu...
What is the strict aliasing rule?
...ict aliasing in your compiler (f[no-]strict-aliasing in gcc))
You can use char* for aliasing instead of your system's word. The rules allow an exception for char* (including signed char and unsigned char). It's always assumed that char* aliases other types. However this won't work the other way: th...
valueOf() vs. toString() in Javascript
...collects primitive values of the operands, and then decides if addition or concatenation should be applied, based on the type of each primitive.
So, this is how you think it works
a + b:
pa = ToPrimitive(a)
if(pa is string)
return concat(pa, ToString(b))
else
return add(p...
Given an emacs command name, how would you find key-bindings ? (and vice versa)
...d bound to a keyboard shortcut (or a key sequence in Emacs terms), see the selected answer.
For programmatically getting the command bound to a given key sequence, use the function key-binding or lookup-key that takes a key sequence and returns its bound command. The function key-binding is what C-...
How to convert integer to string in C? [duplicate]
...
Use sprintf():
int someInt = 368;
char str[12];
sprintf(str, "%d", someInt);
All numbers that are representable by int will fit in a 12-char-array without overflow, unless your compiler is somehow using more than 32-bits for int. When using numbers with gre...
mfc110d.dll!ATL::CSimpleStringT::~CSimpleStringT() 行 291 - 更多技术 -...
...ATL::CStringData::Release() 行 118 C++
mfc110d.dll!ATL::CSimpleStringT<char,1>::~CSimpleStringT<char,1>() 行 291 C++
mfc110d.dll!ATL::CStringT<char,StrTraitMFC_DLL<char,ATL::ChTraitsCRT<char> > >::~CStringT<char,StrTraitMFC_DLL<char,ATL::ChTraitsCRT<char> > >() 行 1241 C++
...
报错...
C Macro definition to determine big endian or little endian machine?
...define ORDER32_H
#include <limits.h>
#include <stdint.h>
#if CHAR_BIT != 8
#error "unsupported char size"
#endif
enum
{
O32_LITTLE_ENDIAN = 0x03020100ul,
O32_BIG_ENDIAN = 0x00010203ul,
O32_PDP_ENDIAN = 0x01000302ul, /* DEC PDP-11 (aka ENDIAN_LITTLE_WORD) */
O32_HO...