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printf with std::string?
My understanding is that string is a member of the std namespace, so why does the following occur?
7 Answers
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Can I call a constructor from another constructor (do constructor chaining) in C++?
...meters is using your parameter to call the other constructor: SomeType(string const &s) { /*...*/ } SomeType(char const *pc) : SomeType(string(pc)) { /*...*/ }
– Cyrille Ka
Sep 14 '15 at 18:14
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How can I get a file's size in C? [duplicate]
...know the size, because I want to put the content of the loaded file into a string, which I allocate using malloc() . Just writing malloc(10000*sizeof(char)); is IMHO a bad idea.
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How to count the number of set bits in a 32-bit integer?
...bit elements in a 64-bit integer with a 0x0101010101010101 multiplier, and extract the high byte with >>56. So it doesn't take any extra steps, just wider constants. This is what GCC uses for __builtin_popcountll on x86 systems when the hardware popcnt instruction isn't enabled. If you can ...
Why does Path.Combine not properly concatenate filenames that start with Path.DirectorySeparatorChar
...en calls IsPathRooted on path2 and returns that path if so:
public static String Combine(String path1, String path2) {
if (path1==null || path2==null)
throw new ArgumentNullException((path1==null) ? "path1" : "path2");
Contract.EndContractBlock();
CheckInvalidPathChars(path1);
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Parsing a comma-delimited std::string [duplicate]
If I have a std::string containing a comma-separated list of numbers, what's the simplest way to parse out the numbers and put them in an integer array?
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Is it possible to print a variable's type in standard C++?
...havior.
What I'm recommending below is:
template <typename T> std::string type_name();
which would be used like this:
const int ci = 0;
std::cout << type_name<decltype(ci)>() << '\n';
and for me outputs:
int const
<disclaimer> I have not tested this on MSVC. &...
How to generate a random alpha-numeric string?
...ng for a simple Java algorithm to generate a pseudo-random alpha-numeric string. In my situation it would be used as a unique session/key identifier that would "likely" be unique over 500K+ generation (my needs don't really require anything much more sophisticated).
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google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...ce.h
#ifndef FOOINTERFACE_H_
#define FOOINTERFACE_H_
#include <string>
namespace seamless {
class FooInterface {
public:
virtual ~FooInterface() {}
public:
virtual std::string getArbitraryString() = 0;
};
} // namespace seamless
#endif // FOOINTER...
How to check if a String contains only ASCII?
...ue if the character is a letter. But is there a way to quickly find if a String only contains the base characters of ASCII?
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