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JavaFile operations & binary data

Copy a file without replacing an existing destination

Java: Files.copy fails if the destination already exists unless replacement is explicitly enabled.

Java✓ Tested
C++Filesystem operations

Copy a file without replacing an existing destination

C++: The default copy_file policy refuses to overwrite an existing destination.

C++✓ Tested
Arduino / CEEPROM & program memory

Copy a flash string into a bounded RAM buffer

Arduino / C: strncpy_P reads from program memory into ordinary RAM.

Arduino / C✓ Tested
Arduino / CDigital signals & interrupts

Copy a multibyte interrupt-owned counter atomically

Arduino / C: ATOMIC_RESTORESTATE restores the interrupt state after reading a shared value.

Arduino / C✓ Tested
Arduino / CDigital signals & interrupts

Count a button’s falling edge in the main loop

Arduino / C: Compare each reading with the previous state to detect transitions.

Arduino / C✓ Tested
Arduino / CDigital input & output

Count a falling edge with an interrupt

Increment a counter when an external input changes.

attachInterrupt✓ Tested
C++Sequence algorithms

Count elements satisfying a predicate

C++: count_if counts matches without constructing a filtered collection.

C++✓ Tested
C++Ordering & set operations

Count occurrences in a sorted sequence

C++: equal_range finds the half-open interval containing values equal to the key.

C++✓ Tested
PythonGetting Started

Count the items in a collection

Python: Read the collection’s length instead of hard-coding the loop limit.

Python✓ Tested
C#Getting Started

Count the items in a collection

C#: Read the collection’s length instead of hard-coding the loop limit.

C#✓ Tested
JavaGetting Started

Count the items in a collection

Java: Read the collection’s length instead of hard-coding the loop limit.

Java✓ Tested
JavaScriptGetting Started

Count the items in a collection

JavaScript: Read the collection’s length instead of hard-coding the loop limit.

JavaScript✓ Tested