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Realistic usage of the C99 'restrict' keyword?
...1
set R2 → *b
Does GCC really do it?
GCC 4.8 Linux x86-64:
gcc -g -std=c99 -O0 -c main.c
objdump -S main.o
With -O0, they are the same.
With -O3:
void f(int *a, int *b, int *x) {
*a += *x;
0: 8b 02 mov (%rdx),%eax
2: 01 07 add %eax,(%rdi)
...
How to get function parameter names/values dynamically?
...
123
Below is the code taken from AngularJS which uses the technique for its dependency injection m...
What are inline namespaces for?
...r> might have looked like this:
namespace std {
#if __cplusplus < 1997L // pre-standard C++
inline
#endif
namespace pre_cxx_1997 {
template <class T> __vector_impl; // implementation class
template <class T> // e.g. w/o allocator argument
class ve...
What is the ultimate postal code and zip regex?
...dable IMO. But you would still be missing on the validation part: Zip code 12345 may exist, but 12346 not, maybe 12344 doesn't exist either. How do you check for that with a regex?
You can't.
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How can I use Autolayout to set constraints on my UIScrollview?
.... Check the entire constraint list for those views here: cl.ly/image/3l061i123j2i
– backslash-f
Apr 14 '15 at 19:51
1
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Python: changing value in a tuple
...er!
In [3]: d = tuple(range(10))
In [4]: %timeit replace_at_index1(d, 5, 99)
1000000 loops, best of 3: 872 ns per loop
In [5]: %timeit replace_at_index2(d, 5, 99)
1000000 loops, best of 3: 642 ns per loop
Yet if we look at longer tuples, list conversion is the way to go:
In [6]: k = tuple(rang...
Is there more to an interface than having the correct methods
...
123
What makes interfaces useful is not the fact that "you can change your mind and use a differen...
Erlang's 99.9999999% (nine nines) reliability
... used in production systems for over 20 years with an uptime percentage of 99.9999999%.
4 Answers
...
Swift - How to convert String to Double
...")
formatter.numberStyle = .decimal
let number = formatter.number(from: "9,999.99")
Currency formats
let usLocale = Locale(identifier: "en_US")
let frenchLocale = Locale(identifier: "fr_FR")
let germanLocale = Locale(identifier: "de_DE")
let englishUKLocale = Locale(identifier: "en_GB") // United...
stdbool.h C99标准杂谈 - C/C++ - 清泛网 - 专注C/C++及内核技术
stdbool.h C99标准杂谈include <stdbool.h> 找不到头文件？？？bool 是C++中的关键字，C中不支持所以C99标准中引入了头文件 stdbool.h，包含了四个用于布尔型...include <stdbool.h> 找不到头文件？？？
bool 是C++中的关键字，C中不支持
所以C99...