The snippet library.
Small, practical examples. Search by task or narrow things down below.
Read an optional JSON property safely
C#: Use TryGetProperty instead of throwing when an optional property is absent.
C#✓ Tested
Read one character from ASCII text
C#: Use a valid zero-based index to read the first character.
C#✓ Tested
Read the beginning of a text value
C#: Extract or display the first three ASCII characters from a known nonempty string.
C#✓ Tested
Read the first collection element
C#: Access index zero only after establishing that the collection is nonempty.
C#✓ Tested
Reject infinity and NaN
C#: Double.IsFinite distinguishes usable finite numeric inputs from special values.
C#✓ Tested
Remove duplicate records by a selected key
C#: DistinctBy keeps the first record for each key in encounter order.
C#✓ Tested
Remove duplicate values
Use LINQ Distinct and OrderBy for a sorted C# result.
C#✓ Tested
Remove matching items from a mutable list
C#: List.RemoveAll returns how many items it removed.
C#✓ Tested
Repeat a fixed number of times
C#: Use a counted loop to print three numbered steps.
C#✓ Tested
Repeat while a condition holds
C#: Count down while a positive number remains, updating the loop variable on each iteration.
C#✓ Tested
Replace a path extension
C#: Path.ChangeExtension transforms a path string without moving or creating a file.
C#✓ Tested
Replace literal text
Replace every literal occurrence in a C# string.
C#✓ Tested