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Creating a new directory in C
...ng a gnu extension to print the error message with printf.
void rek_mkdir(char *path) {
char *sep = strrchr(path, '/');
if(sep != NULL) {
*sep = 0;
rek_mkdir(path);
*sep = '/';
}
if(mkdir(path, 0777) && errno != EEXIST)
printf("error while try...
Find out if string ends with another string in C++
...
Simply compare the last n characters using std::string::compare:
#include <iostream>
bool hasEnding (std::string const &fullString, std::string const &ending) {
if (fullString.length() >= ending.length()) {
return (0 == ...
Use C++ with Cocoa Instead of Objective-C?
...ving it an extension of .mm, or by right-clicking on the file in Xcode and selecting Get Info > General then changing the File Type to sourcecode.cpp.objcpp. The second option is useful if you have a .cpp file where you want to use Objective-C within a Mac-specific #ifdef.
...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
...
This should work:
unsigned char reverse(unsigned char b) {
b = (b & 0xF0) >> 4 | (b & 0x0F) << 4;
b = (b & 0xCC) >> 2 | (b & 0x33) << 2;
b = (b & 0xAA) >> 1 | (b & 0x55) << 1;
retu...
How to convert a Binary String to a base 10 integer in Java
...
This might work:
public int binaryToInteger(String binary) {
char[] numbers = binary.toCharArray();
int result = 0;
for(int i=numbers.length - 1; i>=0; i--)
if(numbers[i]=='1')
result += Math.pow(2, (numbers.length-i - 1));
return result;
}
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Base64: What is the worst possible increase in space usage?
...y possibly become when converted to a Base64 string (assuming one byte per character)?
5 Answers
...
Extracting substrings in Go
...ncluding whitespace), then process it. Using bufio.ReadString, the newline character is read together with the input, so I came up with the following code to trim the newline character:
...
How to get the position of a character in Python?
How can I get the position of a character inside a string in python?
9 Answers
9
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Should I initialize variable within constructor or outside constructor [duplicate]
... in some case initializing in constructor makes sense.
class String
{
char[] arr/*=char [20]*/; //Here initializing char[] over here will not make sense.
String()
{
this.arr=new char[0];
}
String(char[] arr)
{
this.arr=arr;
}
}
So depending on the situa...
How do I grant myself admin access to a local SQL Server instance?
...he "SQL Server Configuration Manager", right click the server instance and select properties, go to the tab "Startup Parameters" and add -m.
– maets
May 5 '15 at 13:32
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