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

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PostgresConstraints & defaults

Require a value with NOT NULL

Postgres: Declare required fields at the database boundary, not only in application validation.

Postgres✓ Tested
SQLiteConstraints & defaults

Require a value with NOT NULL

SQLite: Declare required fields at the database boundary, not only in application validation.

SQLite✓ Tested
C++Getting Started

Require two conditions to be true

C++: Combine a lower and an upper bound to check whether a value is in range.

C++✓ Tested
CGetting Started

Require two conditions to be true

C: Combine a lower and an upper bound to check whether a value is in range.

C✓ Tested
ReactEffects & lifecycle

Rerun an effect when its dependency changes

Rerun an effect when its dependency changes with a small React component and explicit browser behavior.

React✓ Tested
ReactComponents & props

Reset child state by changing its key

Reset child state by changing its key with a small React component and explicit browser behavior.

React✓ Tested
ReactForms & validation

Reset controlled form state

Reset controlled form state with a small React component and explicit browser behavior.

React✓ Tested
ReactState & reducers

Reset reducer state explicitly

Reset reducer state explicitly with a small React component and explicit browser behavior.

React✓ Tested
Docker / ComposeNetworks & volume metadata

Resolve a peer’s name on a user-defined network

Docker / Compose: The embedded DNS service resolves names on user-defined bridges.

Docker / Compose✓ Tested
Docker / ComposeContainer lifecycle

Restart an existing container

Docker / Compose: restart starts the same container again while retaining its writable layer.

Docker / Compose✓ Tested
jQueryForm serialization & state

Restore a form’s original default values

jQuery: Call the native reset method through the underlying form element.

jQuery✓ Tested
PowerShellCommands & execution context

Restore an environment value after temporary use

PowerShell: Use finally so temporary process configuration does not leak to subsequent work; remove the entry when it was originally absent.

PowerShell✓ Tested