A pre-condition: apply this operation only if the HTTP Entity Tag matches.
HTTP Entity Tags allow applications to conditionally execute a query only if the target resource matches the expected state. This can be useful, for example, to implement optimistic concurrency control in the application.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-05-07 UTC."],[[["The latest version available is 2.37.0-rc, which can be accessed via a specific link."],["The provided content lists various versions of `IfMatchEtag`, ranging from the most recent release candidate down to version 2.11.0, allowing navigation to specific documentation for each."],["`IfMatchEtag` is designed to apply a conditional operation exclusively when the HTTP Entity Tag matches the resource's current state, which is useful for scenarios like optimistic concurrency control."],["The `header_name()` function is a static function available within `IfMatchEtag`, and it is described as returning a `char const *`."],["The HTTP Entity Tags enable conditional execution of a query when the target resource matches the expected state."]]],[]]
