Results for &#x201C;Text validation &amp; formatting&#x201D;

Check a literal prefix with ordinal comparison

C#: Choose StringComparison.Ordinal when a prefix is a protocol token rather than culture-dependent text.

Check a literal suffix in C++17

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

Check an extension without case sensitivity

C#: Use an explicit ordinal case-insensitive comparison for a known filename suffix.

PythonText validation & encoding

Encode and decode binary data as Base64

Python: Use Base64 when a text format must carry bytes; it is encoding, not encryption.

Python✓ Tested

Enumerate Unicode code points

C#: EnumerateRunes combines surrogate pairs into Unicode scalar values.

Extract a substring with an explicit count

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

Extract a substring with range syntax

C#: C# range ends are exclusive; indices operate on UTF-16 code units.

PythonText validation & encoding

Extract named regex fields

Python: Use named capture groups to parse a known date-shaped identifier.

Python✓ Tested

Inspect a substring without allocating a copy

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

Iterate over all regular-expression matches

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

Normalize canonically equivalent Unicode strings

C#: Normalize to NFC before an ordinal comparison of equivalent character sequences.