The snippet library.

C++Text validation & parsing

Check a literal prefix in C++17 ↗

C++: Use string compare because starts_with was introduced after C++17.

C++✓ Tested

C++Text validation & parsing

Check a literal suffix in C++17 ↗

C++: Check lengths before subtracting to avoid an unsigned underflow.

C++✓ Tested

C++Text validation & parsing

Convert ASCII text to lowercase safely ↗

C++: Cast each byte to unsigned char before using the cctype function.

C++✓ Tested

C++Text validation & parsing

Extract a substring with an explicit count ↗

C++: The second substr argument is a length rather than an ending index.

C++✓ Tested

C++Text validation & parsing

Inspect a substring without allocating a copy ↗

C++: A string_view refers to existing storage and must not outlive that storage.

C++✓ Tested

C++Text validation & parsing

Iterate over all regular-expression matches ↗

C++: A regex iterator yields successive matches without manually updating an offset.

C++✓ Tested

C++Text validation & parsing

Read a quoted string containing spaces ↗

C++: The quoted manipulator extracts a quoted field without splitting at internal spaces.

C++✓ Tested

C++Text validation & parsing

Replace text using captured regex groups ↗

C++: Numbered replacement groups can rearrange a known two-part name.

C++✓ Tested

C++Text validation & parsing

Trim surrounding ASCII whitespace ↗

C++: Find the first and last non-whitespace bytes before taking a substring.

C++✓ Tested

C++Text validation & parsing

Validate a complete identifier ↗

C++: regex_match requires the pattern to match the complete input sequence.

C++✓ Tested