Examlex
The map, filter, and reduce functions can only be used on list collections.
Trade
The exchange of goods or services between parties in return for other goods, services, or money.
Gains From Trade
The benefits that entities receive from the voluntary exchange of goods or services, typically leading to an improvement in overall welfare.
Street Lighting
A service provided, often by local governments, that involves the installation and maintenance of public lighting along streets and in public areas for safety and visibility.
Marginal Benefit
The additional benefit derived from consuming or producing one more unit of a good or service.
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