Results for “keys”

GoMaps & sets

Sort map keys for stable output ↗

Sort map keys for stable output using a complete Go program with explicit sample inputs.

Go✓ Tested

C#Collections & data structures

Use case-insensitive dictionary keys ↗

C#: Choose an ordinal comparer when case-insensitive keys represent identifiers.

C#✓ Tested

Bash ScriptsArray operations

Visit associative-array keys in a stable order ↗

Bash Scripts: Associative arrays have no defined iteration order, so sort their keys explicitly.

Bash Scripts✓ Tested

SQLSubqueries & ranked selection

Read a page after a known unique key ↗

SQL: A keyset predicate avoids scanning and discarding an increasing offset on a suitable index.

SQL✓ Tested

SQL ServerSubqueries & ranked selection

Read a page after a known unique key ↗

SQL Server: A keyset predicate avoids scanning and discarding an increasing offset on a suitable index.

SQL Server✓ Tested

PostgresSubqueries & ranked selection

Read a page after a known unique key ↗

Postgres: A keyset predicate avoids scanning and discarding an increasing offset on a suitable index.

Postgres✓ Tested

SQLiteSubqueries & ranked selection

Read a page after a known unique key ↗

SQLite: A keyset predicate avoids scanning and discarding an increasing offset on a suitable index.

SQLite✓ Tested

TypeScriptCollections & records

Type a dictionary with Record ↗

Limit a lookup table to a known set of keys.

Record✓ Tested

SQLiteJSON data

Expand a JSON array into rows ↗

Iterate array elements using a table-valued function.

json_each✓ Tested

JavaStream transformations

Group strings by their length ↗

Java: Choose a TreeMap supplier when group keys must have deterministic order.

Java✓ Tested

JavaStream transformations

Index records by a unique key ↗

Java: Use toMap with an explicit merge rule so duplicate keys have defined behavior.

Java✓ Tested

PythonMappings & sets

Invert a dictionary with unique values ↗

Python: Swap keys and values when the values are hashable and unique.

Python✓ Tested