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C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
...ss File_handle {
FILE* p;
public:
File_handle(const char* n, const char* a)
{ p = fopen(n,a); if (p==0) throw Open_error(errno); }
File_handle(FILE* pp)
{ p = pp; if (p==0) throw Open_error(errno); }
~File_handle() { fclose(p); }
...
What is the curiously recurring template pattern (CRTP)?
...ter
{
public:
Writer() { }
~Writer() { }
void write(const char* str) const
{
static_cast<const T*>(this)->writeImpl(str); //here the magic is!!!
}
};
class FileWriter : public Writer<FileWriter>
{
public:
FileWriter(FILE* aFile) { mFile = aFile; ...
Detecting syllables in a word
...es in my algorithm.
private int CountSyllables(string word)
{
char[] vowels = { 'a', 'e', 'i', 'o', 'u', 'y' };
string currentWord = word;
int numVowels = 0;
bool lastWasVowel = false;
foreach (char wc in currentWord)
{
bool foundVowel...
Java: Difference between PrintStream and PrintWriter
...ce being a OutputStream is a stream of bytes while a Writer is a stream of characters.
If an OutputStream deals with bytes, what about PrintStream.print(String)? It converts chars to bytes using the default platform encoding. Using the default encoding is generally a bad thing since it can lead to...
How to turn on (literally) ALL of GCC's warnings?
...-binding-type -Wc90-c99-compat -Wc99-c11-compat -Wcast-align -Wcast-qual -Wchar-subscripts -Wcharacter-truncation -Wchkp -Wclobbered -Wcomment -Wcompare-reals -Wconditionally-supported -Wconversion -Wconversion-extra -Wconversion-null -Wcoverage-mismatch -Wcpp -Wctor-dtor-privacy -Wdate-time -Wdecla...
Why do you not use C for your web apps?
...;
StringBuffer sb = new StringBuffer(len);
boolean lastWasBlankChar = false;
int c;
for(int i=0; i<len; i++) {
c = Name.charAt(i);
if(c == ' ') sb.append("&#32;"); else
if(c == '"') sb.append("&quot;"); else
if(c == '&...
How do you normalize a file path in Bash?
...tring.h>
#include <libgen.h>
#include <limits.h>
static char *s_pMyName;
void usage(void);
int main(int argc, char *argv[])
{
char
sPath[PATH_MAX];
s_pMyName = strdup(basename(argv[0]));
if (argc < 2)
usage();
printf("%s\n", realpath(argv[1]...
Sprintf equivalent in Java
... solutions:
with format(), closest to sprintf():
final static String HexChars = "0123456789abcdef";
public static String getHexQuad(long v) {
String ret;
if(v > 0xffff) ret = getHexQuad(v >> 16); else ret = "";
ret += String.format("%c%c%c%c",
HexChars.charAt((int) (...
What does the restrict keyword mean in C++?
... saved, as mentioned by supercat and michael.
Consider for example:
void f(char *restrict p1, char *restrict p2, size_t size) {
for (size_t i = 0; i < size; i++) {
p1[i] = 4;
p2[i] = 9;
}
}
Because of restrict, a smart compiler (or human), could optimize that to:
mem...
What is the printf format specifier for bool?
...
@HelloGoodbye, passing a single char * to printf() is considered bad practice because it's really supposed to be a format string, and an unescaped percent sign might cause your program to blow up (see here for more). Thus, printf("%s", ...) is safer. If you...