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Templated check for the existence of a class member function?
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328
Yes, with SFINAE you can check if a given class does provide a certain method. Here's the work...
How do I safely pass objects, especially STL objects, to and from a DLL?
...undamental datatypes have the same sizes regardless of whether your app is 32-bit or 64-bit. However, since the size of a given datatype is enforced by the compiler, not by any standard (all the standard guarantees is that 1 == sizeof(char) <= sizeof(short) <= sizeof(int) <= sizeof(long) &l...
PostgreSQL Crosstab Query
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330
Install the additional module tablefunc once per database, which provides the function crossta...
How do I initialize a TypeScript object with a JSON object
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return instance;
}
var json = {
baz: 42,
Sub: {
id: 1337
}
};
var instance = deserialize(json, Environment, Environment.Foo);
console.log(instance);
Option #2: The name property
To get rid of the problem in option #1, we need to have some kind of information of what typ...
hash function for string
...stein.
unsigned long
hash(unsigned char *str)
{
unsigned long hash = 5381;
int c;
while (c = *str++)
hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
return hash;
}
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Python date string to date object
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Alan W. Smith
20.7k33 gold badges6060 silver badges8484 bronze badges
answered May 10 '10 at 15:24
SilentGhostSilentGhos...
Why do assignment statements return a value?
... to be careful and draw your line for "simple" low for readability: return _myBackingField ?? (_myBackingField = CalculateBackingField()); A lot less chaff than checking for null and assigning.
– Tom Mayfield
Sep 27 '10 at 22:02
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RE error: illegal byte sequence on Mac OS X
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308
A sample command that exhibits the symptom: sed 's/./@/' <<<$'\xfc' fails, because by...
What exactly is nullptr?
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Mankarse
36.5k99 gold badges8383 silver badges136136 bronze badges
answered Aug 15 '09 at 17:06
Johannes Schau...
Why are preprocessor macros evil and what are the alternatives?
...ly becomes completely the wrong thing....
Replacement: real functions.
3) Macros have no namespace
If we have a macro:
#define begin() x = 0
and we have some code in C++ that uses begin:
std::vector<int> v;
... stuff is loaded into v ...
for (std::vector<int>::iterator it = m...