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Results for “Input constraints”

Small, practical examples. Search by task or narrow things down below.

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TypeScriptTypes & functions

Return the first item with a generic function

Preserve the element type while allowing empty arrays.

generics✓ Tested
GitGetting Started

Return to the original branch

Git: Return to the original branch inside the disposable repository created by the input setup.

Git✓ Tested
GitBranches & ancestry

Return to the previously checked-out branch

Git: The dash shorthand selects the previous branch in the checkout history.

Git✓ Tested
GoGetting Started

Return two values from a function

Return two values from a function using a complete Go program with explicit sample inputs.

Go✓ Tested
SQLReporting & grouped calculations

Return zero for a sum over no rows

SQL: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

SQL✓ Tested
SQL ServerReporting & grouped calculations

Return zero for a sum over no rows

SQL Server: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

SQL Server✓ Tested
PostgresReporting & grouped calculations

Return zero for a sum over no rows

Postgres: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

Postgres✓ Tested
SQLiteReporting & grouped calculations

Return zero for a sum over no rows

SQLite: SUM produces NULL for an empty input; COALESCE supplies the desired reporting default.

SQLite✓ Tested
GoSlices & collections

Reverse slice order

Reverse slice order using a complete Go program with explicit sample inputs.

Go✓ Tested
PowerShellDates & numeric validation

Round a decimal with a chosen midpoint rule

PowerShell: Use decimal input and an explicit rounding policy for a reproducible decimal result.

PowerShell✓ Tested
GoDates & times

Round down to a whole minute

Round down to a whole minute using a complete Go program with explicit sample inputs.

Go✓ Tested
Docker / ComposeContainer commands

Run a command in a running container

Execute an additional process inside an existing container.

exec✓ Tested