earlephilhower/gist:60a11311c7c86445cfcd28ef38a31c52

## gistfile1.txt
#include <Arduino.h>

void addresses(const char* const begin, const char* const end) {
    ::printf("%p:%p -> (%u)\n", begin, end, end - begin);
}

#if 0
template <size_t Size>
void addresses(const char (&buf)[Size]) {
    addresses(std::begin(buf), std::end(buf));
}
#elif 1
#define addresses(X)\
    addresses(&X[0], &X[sizeof(X)])
#else
template <size_t Size>
void addresses(const char (&buf)[Size]) {
    addresses(&buf[0], &buf[Size]);
}
#endif

#if 0
#define EMPTY_STRING ""
#define COMMA_STRING ","
#else
static const char EMPTY_STRING[] = "";
static const char COMMA_STRING[] = ",";
#endif

void test() {
    addresses(EMPTY_STRING);
    addresses(COMMA_STRING);
}

void setup() {
    Serial.begin(115200);
    delay(1000);
    ::puts("\n\n\n");
    test();
}

void loop() {
    delay(100);
}
	#include <Arduino.h>

	void addresses(const char* const begin, const char* const end) {
	::printf("%p:%p -> (%u)\n", begin, end, end - begin);
	}

	#if 0
	template <size_t Size>
	void addresses(const char (&buf)[Size]) {
	addresses(std::begin(buf), std::end(buf));
	}
	#elif 1
	#define addresses(X)\
	addresses(&X[0], &X[sizeof(X)])
	#else
	template <size_t Size>
	void addresses(const char (&buf)[Size]) {
	addresses(&buf[0], &buf[Size]);
	}
	#endif

	#if 0
	#define EMPTY_STRING ""
	#define COMMA_STRING ","
	#else
	static const char EMPTY_STRING[] = "";
	static const char COMMA_STRING[] = ",";
	#endif

	void test() {
	addresses(EMPTY_STRING);
	addresses(COMMA_STRING);
	}

	void setup() {
	Serial.begin(115200);
	delay(1000);
	::puts("\n\n\n");
	test();
	}

	void loop() {
	delay(100);
	}
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