Results for &#x201C;buffer&#x201D;

Detect truncated formatted output

Arduino / C: snprintf returns the length it would have written, excluding the null terminator.

Extract a section of an Arduino String

Arduino / C: substring includes the start index and excludes the end index.

Find the final path separator

C: strrchr locates the last matching character without modifying the input.

Find the first occurrence of a character

C: strchr returns a pointer into the input or NULL if the character is absent.

Keep a serial message in flash memory

Arduino / C: The F macro keeps a literal out of scarce SRAM.

Move overlapping bytes safely

C: memmove supports overlapping ranges, unlike memcpy.

JavaFile operations & binary data

Process a text file one line at a time

Java: Use a buffered reader to avoid loading a large file into memory.

Java✓ Tested

JavaEncoding & structured values

Read a big-endian integer from bytes

Java: Set a byte order explicitly when handling a binary protocol.

Java✓ Tested

Reject an integer with trailing characters

Arduino / C: strtol exposes an end pointer so a parser can require the entire token.

Replace a token inside an Arduino String

Arduino / C: replace modifies all occurrences in the existing object.

Split simple delimited text in place

C: strtok inserts terminators into a writable buffer and skips repeated delimiter characters.

Trim surrounding whitespace from an Arduino String

Arduino / C: String.trim modifies the object in place.