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x/opine/src/response.ts>Response#vary

Fast, minimalist web framework for Deno ported from ExpressJS.
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method Response.prototype.vary
import { Response } from "https://deno.land/x/opine@2.2.0/src/response.ts";

Add field to Vary. If already present in the Vary set, then this call is simply ignored.

Parameters

field: string | string[]

Returns

this

for chaining