Results for “empty”
Small, practical examples. Search by task or narrow things down below.
Read the first collection element
JavaScript: Access index zero only after establishing that the collection is nonempty.
JavaScript✓ Tested
Read the first collection element
TypeScript: Access index zero only after establishing that the collection is nonempty.
TypeScript✓ Tested
Read the first collection element
C++: Access index zero only after establishing that the collection is nonempty.
C++✓ Tested
Read the first collection element
C: Access index zero only after establishing that the collection is nonempty.
C✓ Tested
Read the last value of the complete partition
SQL Server: Specify an unbounded-following frame so LAST_VALUE does not stop at the current row.
SQL Server✓ Tested
Read the last value of the complete partition
Postgres: Specify an unbounded-following frame so LAST_VALUE does not stop at the current row.
Postgres✓ Tested
Read the length of an ASCII string
Bash Scripts: Read the length of an ASCII string with a small standalone Bash program.
Bash Scripts✓ Tested
Read the next row’s value
SQL Server: LEAD reads a later ordered row without a self join and supports a fallback at the end.
SQL Server✓ Tested
Read the next row’s value
Postgres: LEAD reads a later ordered row without a self join and supports a fallback at the end.
Postgres✓ Tested
Read the smallest and largest values
SQL Server: Use MIN and MAX without sorting and fetching every row.
SQL Server✓ Tested
Read the smallest and largest values
Postgres: Use MIN and MAX without sorting and fetching every row.
Postgres✓ Tested
Read updated base-table values through a view
SQL Server: An ordinary view reflects later changes to its underlying data.
SQL Server✓ Tested