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

Treat dynamic regex input as literal text

Java: Use Pattern.quote so metacharacters in a search term lose their special meaning.

GoErrors & validation

Wrap an error with context

Wrap an error with context using a complete Go program with explicit sample inputs.

Go✓ Tested

Check a filename suffix

Java: Use endsWith for a case-sensitive literal suffix test.

Check a literal prefix in C++17

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

Check a literal suffix in C++17

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

Check a string prefix

Java: Use startsWith to check a literal Java prefix without a regular expression.

Count Unicode code points

Java: Use codePointCount when supplementary characters should count as one rather than two UTF-16 units.

Extract a substring with an explicit count

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

Extract successive regex matches

Java: Use a Matcher loop to find all unsigned integer tokens in Java text.

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.