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Move capture in lambda
...t;type_traits>
#include <functional>
namespace detail
{
enum selection_enabler { enabled };
}
#define ENABLE_IF(...) std::enable_if_t<(__VA_ARGS__), ::detail::selection_enabler> \
= ::detail::enabled
// This allows forwarding an object using the copy c...
What is the Difference Between read() and recv() , and Between send() and write()?
...). However, it didn't work when I tried to send binary data that included character 10. write() somewhere inserted character 13 before this. Changing it to send() with a flags parameter of 0 fixed that problem. read() could have the reverse problem if 13-10 are consecutive in the binary data, bu...
Copy a file in a sane, safe and efficient way
...ing with the file system:
#include <copyfile.h>
int
copyfile(const char *from, const char *to, copyfile_state_t state, copyfile_flags_t flags);
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Why does PEP-8 specify a maximum line length of 79 characters? [closed]
...his millennium should Python PEP-8 specify a maximum line length of 79 characters?
9 Answers
...
Can hash tables really be O(1)?
...TW - concrete example - Visual C++'s std::hash of textual keys combines 10 characters evenly spaced along the text into the hash value, so it's O(1) regardless of text length (but massively more collision prone than GCC!). Separately, claims of O(1) have another assumption (normally correctly) that...
C++ new int[0] — will it allocate memory?
...t be reasonable to say that a computer executing a while(!exitRequested) { char *p = new char[0]; delete [] p; } loop without recycling pointers would collapse into dust before it could possibly run out of address space, but on a platform with 32-bit pointers that would be a far less reasonable assu...
Understanding recursion [closed]
.... We'll use a binary tree of nodes, but this time the value held will be a character, not a number.
Our tree will have a special property, that for any node, its character comes after (in alphabetical order) the character held by its left child and before (in alphabetical order) the character held ...
Using Regex to generate Strings rather than match them
...
I am not sure Xeger is that good. It cannot handle character classes. It fails to recognize a simple [\w]. A look at the last line of their wiki tells us that.
– John Red
Feb 13 '17 at 12:38
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Array versus List: When to use which?
...rable is not suitable.
For example,
var str = "This is a string";
var strChars = str.ToCharArray(); // returns array
It is clear that modification of "strChars" will not mutate the original "str" object, irrespective implementation-level knowledge of "str"'s underlying type.
But suppose that
...
C#: Printing all properties of an object [duplicate]
... string)
return string.Format("\"{0}\"", o);
if (o is char && (char)o == '\0')
return string.Empty;
if (o is ValueType)
return (o.ToString());
if (o is IEnumerable)
return ("...");
return ("{ }");
}
}
...