Results for “present”
Small, practical examples. Search by task or narrow things down below.
Check that a file is present and nonempty
Test file content availability before reading it.
file check✓ Tested
Delete a known temporary file if present
Java: deleteIfExists returns whether a file was removed and still reports other I/O errors.
Java✓ Tested
Find values present in exactly one set
Python: Use symmetric difference when either side can contain unmatched values.
Python✓ Tested
Represent a decimal quantity with a scaled integer
Arduino / C: Integer hundredths avoid floating-point storage for fixed-precision values.
Arduino / C✓ Tested
Represent a finite set of states
Java: Use an enum to prevent arbitrary strings from representing application states.
Java✓ Tested
Represent a hierarchy with nested lists
HTML: Place the nested list inside its parent list item to preserve the hierarchy.
HTML✓ Tested
Represent a record with a dataclass
Python: Generate initialization and convert a typed record to a dictionary.
Python✓ Tested
Represent a set with empty structs
Represent a set with empty structs using a complete Go program with explicit sample inputs.
Go✓ Tested
Represent a small set of named states
C: An enum gives symbolic names to integer state values.
C✓ Tested
Represent an absent result with optional
C++: value_or supplies a default without requiring a sentinel inside the value domain.
C++✓ Tested
Represent an enabled state
Arduino / C: Represent an enabled state on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Represent progress whose total is unknown
HTML: Omit value to make a progress element indeterminate.
HTML✓ Tested