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Does making a struct volatile make all its members volatile?
...by the pointer as const or volatile, use a declaration of the form:
const char *cpch;
volatile char *vpch;
To declare the value of the pointer — that is, the actual address stored in the pointer — as const or volatile, use a declaration of the form:
char * const pchc;
char * volatile pchv;
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Which is faster : if (bool) or if(int)?
... @Nathan: No. C++ has no bit data types. The smallest type is char, which is a byte by definition, and is the smallest addressable unit. bool's size is implementation-defined, and may be 1, 4, or 8, or whatever. Compilers tend to make it one, though.
– GManNickG
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What is the MySQL VARCHAR max size?
I would like to know what the max size is for a MySQL VARCHAR type.
7 Answers
7
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How to delete duplicate lines in a file without sorting it in Unix?
... <sniff> makes me sad. ;) Anyways, [ -~] represents a range of ASCII characters from 0x20 (space) to 0x7E (tilde). These are considered the printable ASCII characters (linked page also has 0x7F/delete but that doesn't seem right). That makes the solution broken for anyone not using ASCII or an...
Regex doesn't work in String.matches()
...wercase letters, you can use .matches(), but you need to match one or more characters: append a + to your character class, as in [a-z]+. Or use ^[a-z]+$ and .find().
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What happens if you static_cast invalid value to enum class?
... implementers to apply to to their C++11 and C++14 compilation modes.
(*) char is required to be at least 8 bit wide, but isn't required to be unsigned. The maximum value storable is required to be at least 127 per Annex E of the C99 Standard.
Compare to [expr]/4
If during the evaluation of ...
Use String.split() with multiple delimiters
... answered May 13 '11 at 14:59
Richard HRichard H
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What tools are there for functional programming in C?
...y(struct function_t* fn, struct list_t* arguments) {
return fn->thunk(concat(fn->arguments, arguments));
}
/* expansion of WRAP_PLAIN_FUNCTION_TO_FIRST_CLASS */
void* increment_thunk(struct list_t* arguments) {
int x_arg = *(int*) arguments->head;
int value = increment_int(x_arg);
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Generate a Hash from string in Javascript
...= 0, i, chr;
for (i = 0; i < this.length; i++) {
chr = this.charCodeAt(i);
hash = ((hash << 5) - hash) + chr;
hash |= 0; // Convert to 32bit integer
}
return hash;
}
});
Source:
http://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-h...
C++虚继承的概念 - C/C++ - 清泛网 - 专注C/C++及内核技术
..." << endl;}
34: private:
35: };
36:
37: int main(int argc, char* argv[])
38: {
39: Child c;
40:
41: //不能这样使用，会产生二意性，VC下error C2385
42: //c.print();
43:
44: //只能这样使用
45: c.Base::print();
46: c.Sub::print...