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Best implementation for hashCode method for a collection
...has only one multiplier, while non-prime has at least two. That creates an extra combination for multiplication operator to result the same hash, i.e. cause collision.
– dma_k
Feb 15 '13 at 14:08
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Extract digits from a string in Java
I have a Java String object. I need to extract only digits from it. I'll give an example:
14 Answers
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Getting the closest string match
I need a way to compare multiple strings to a test string and return the string that closely resembles it:
12 Answers
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What are Aggregates and PODs and how/why are they special?
...er-defined constructor is present, it means that the user needs to do some extra work to initialize the members therefore brace initialization would be incorrect. If virtual functions are present, it means that the objects of this class have (on most implementations) a pointer to the so-called vtabl...
C++ SFINAE examples?
... a class or not:
int main(void) {
std::cout << IsClassT<std::string>::value << std::endl; // true
std::cout << IsClassT<int>::value << std::endl; // false
return 0;
}
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Read file line by line using ifstream in C++
...gt; a >> b)
{
// process pair (a,b)
}
Line-based parsing, using string streams:
#include <sstream>
#include <string>
std::string line;
while (std::getline(infile, line))
{
std::istringstream iss(line);
int a, b;
if (!(iss >> a >> b)) { break; } // err...
How much is too much with C++11 auto keyword?
...se auto everywhere you can". Does this mean I should write auto str = std::string(); instead of std::string str;?
– Calmarius
Mar 23 '19 at 18:42
5
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Boolean Field in Oracle
... guess i should say double length twos complement floating point), Binary, string, etc. all assume a value is provided but database implementations always add a null value option Boolean isn't any different
– MikeT
Oct 7 '13 at 8:50
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How do you determine the size of a file in C?
...is:
#include <sys/stat.h>
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
off_t fsize(const char *filename) {
struct stat st;
if (stat(filename, &st) == 0)
return st.st_size;
fprintf(stderr, "Cannot determine ...
How to convert byte array to string and vice versa?
I have to convert a byte array to string in Android, but my byte array contains negative values.
22 Answers
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