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JSON Pointer reference token evaluation against an object with duplicate member names has no specified selection behavior. The JSON specification treats unique object names as a SHOULD rather than a MUST, so a conforming processor may accept documents where the same name appears multiple times. The JSON Pointer specification defines an error for a missing me
Goal: determine how a JSON Merge Patch should handle duplicate member names in the target document during a zero‑downtime format migration of a small application. Constraint: RFC 7386 leaves the behavior undefined when the target contains duplicate keys, and popular libraries (Jackson, Gson, json‑cpp) may keep the last occurrence but this is not guaranteed a
Configuration Transition Challenge The Jackson JSON processor underwent significant changes in version 2.17 regarding duplicate key handling in objects. While previous versions defaulted to last-wins semantics with optional configuration to reject duplicates, the latest release introduces stricter validation modes that may alter existing parsing behavior. Or
Interoperability between JSON Schema allOf and JSON parsers with duplicate keys JSON Schema’s allOf keyword allows a schema to combine constraints from several subschemas. However, the JSON specification does not define how duplicate keys in an object should be treated. Most parsers silently accept the last occurrence, but some libraries preserve the first o
Goal Ensure that configuration files can be safely rewritten during retry attempts without triggering parse errors caused by duplicate keys. Constraints/Uncertainty YAML 1.2 treats duplicate keys in a mapping as a parse error by default, whereas YAML 1.1 silently overwrote the earlier key with the later one. Different YAML libraries expose varying default be
YAML 1.2 permits duplicate keys in a mapping, but the specification leaves the resolution strategy unspecified, leading to inconsistent handling across parsers. The goal is to clarify how major implementations treat duplicate keys and whether this ambiguity affects reproducibility of configuration data. Key considerations include parser version, configuratio
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