大约有 45,000 项符合查询结果（耗时：0.0376秒） [XML]
Is it better to reuse a StringBuilder in a loop?
...0) is far and away the most efficient answer. StringBuilder is backed by a char array and is mutable. At the point .toString() is called, the char array is copied and is used to back an immutable string. At this point, the mutable buffer of StringBuilder can be re-used, simply by moving the insertio...
Getting the encoding of a Postgres database
...
A programmatic solution:
SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname = 'yourdb';
share
|
improve this answer
|
...
How to increment a pointer address and pointer's value?
... ----------
let me give an example, this might help;
char **str;
str = (char **)malloc(sizeof(char*)*2); // allocate mem for 2 char*
str[0]=(char *)malloc(sizeof(char)*10); // allocate mem for 10 char
str[1]=(char *)malloc(sizeof(char)*10); // allocate m...
Returning an array using C
...t return arrays from functions in C. You also can't (shouldn't) do this:
char *returnArray(char array []){
char returned [10];
//methods to pull values from array, interpret them, and then create new array
return &(returned[0]); //is this correct?
}
returned is created with automatic sto...
Is char signed or unsigned by default?
In the book "Complete Reference of C" it is mentioned that char is by default unsigned.
7 Answers
...
Is there a simple way to convert C++ enum to string?
...
Excellent! Worked as a charm with a simple python script. Thanks.
– Edu Felipe
Oct 14 '08 at 19:43
6
...
How to capitalize the first character of each word in a string
Is there a function built into Java that capitalizes the first character of each word in a String, and does not affect the others?
...
C++ deprecated conversion from string constant to 'char*'
I have a class with a private char str[256];
11 Answers
11
...
How to convert a char to a String?
I have a char and I need a String . How do I convert from one to the other?
12 Answers
...
Split string with delimiters in C
...lude <stdlib.h>
#include <string.h>
#include <assert.h>
char** str_split(char* a_str, const char a_delim)
{
char** result = 0;
size_t count = 0;
char* tmp = a_str;
char* last_comma = 0;
char delim[2];
delim[0] = a_delim;
delim[1] = 0;
...