大约有 42,000 项符合查询结果（耗时：0.0464秒） [XML]
When should one use a 'www' subdomain?
...nce to its web service?
What would you rather write/type/say.. "www." (4 chars) or "http://" (7 chars) ??
"www." is an established shorthand way of unambiguously communicating the fact that the subject is a web address, not a URL for another network service.
When verbally communicating a web add...
Is JavaScript a pass-by-reference or pass-by-value language?
...
For any C programmers, think of char*. foo(char *a){a="hello";} does nothing, but if you do foo(char *a){a[0]='h';a[1]='i';a[2]=0;} it is changed outside because a is a memory location passed by value that references a string (char array). Passing stru...
(-2147483648> 0) returns true in C++?
...
@RichardJ.RossIII - with clang you are probably getting a 64-bit-typed literal, since it was too big to fit in an int. OP's implementation may not have a 64-bit type.
– Carl Norum
Feb 4 '1...
PHP random string generator
...keyspace A string of all possible characters
* to select from
* @return string
*/
function random_str(
int $length = 64,
string $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
): string {
if ($length < 1) {
throw new \Ran...
Specifically, what's dangerous about casting the result of malloc?
...f. Here's an example code fragment for discussion purposes.
main()
{
char * c = (char *)malloc(2) ;
printf("%p", c) ;
}
Suppose that the returned heap pointer is something bigger than what is representable in an int, say 0xAB00000000.
If malloc is not prototyped to return a pointer, the ...
How do you implement a class in C? [closed]
...n(Object *self);
/// Person.h
typedef struct Person {
Object obj;
char *name;
} Person;
int Person_init(Person *self, char *name);
int Person_greet(Person *self);
int Person_clean(Person *self);
/// Object.c
#include "object.h"
int Object_init(Object *self)
{
self->uuid = uuid_new...
Delete all but the most recent X files in bash
... but the 5 last lines (ie the 5 newest files).
xargs rm calls rm for each selected file.
share
|
improve this answer
|
follow
|
...
string.split - by multiple character delimiter
...
This presupposes, that there are both characters right? What if I want to split by either "[" or "]"? From my tests so far I guess thats a different story, right?
– C4d
Mar 7 '16 at 15:28
...
How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...
C# example to error at compile time.
class Foo
{
const char Sum = (1000 + 1) * 1000 / 2;
}
Produces the following compilation error:
Constant value '500500' cannot be converted to a 'char'
share
...
What is the “assert” function?
... not raise an exception, it has parentheses around its argument, and the # character does not introduce a comment.
– Steve Jessop
Oct 15 '09 at 11:36
...