{"id":"compute.device--deviceFallbackRule","name":"deviceFallbackRule","owner":"yeho","package":"compute.device","kind":"thing","signature":"external thing deviceFallbackRule","description":"A device fallback rule record carrying requestedBackend, fallbackBackend, reason, notes.","context":"Inspect device capability catalogs and model resource lifetimes and placement decisions.","parameters":[],"returns":"void","members":[{"name":"requestedBackend","kind":"field","type":"text","description":"Stores requested backend as text.","signature":"text requestedBackend","tags":["thing","field","compute.device"],"updated":"2026-09-09"},{"name":"fallbackBackend","kind":"field","type":"text","description":"Stores fallback backend as text.","signature":"text fallbackBackend","tags":["thing","field","compute.device"],"updated":"2026-09-09"},{"name":"reason","kind":"field","type":"text","description":"Stores reason as text.","signature":"text reason","tags":["thing","field","compute.device"],"updated":"2026-09-09"},{"name":"notes","kind":"field","type":"text","description":"Stores notes as text.","signature":"text notes","tags":["thing","field","compute.device"],"updated":"2026-09-09"},{"name":"deviceFallbackRule","kind":"constructor","parameters":[{"name":"requestedBackend","type":"text","description":"Requested backend."},{"name":"fallbackBackend","type":"text","description":"Fallback backend."},{"name":"reason","type":"text","description":"Reason."},{"name":"notes","type":"text","description":"Notes."}],"returns":"void","signature":"deviceFallbackRule(text requestedBackend, text fallbackBackend, text reason, text notes)","description":"Device fallback rule.","tags":["thing","constructor","compute.device"],"updated":"2026-09-09"},{"name":"HasFallback","kind":"method","parameters":[],"returns":"bool","signature":"HasFallback() returns bool","description":"Has fallback.","tags":["thing","method","compute.device"],"exampleId":"method-HasFallback-5","updated":"2026-09-09"},{"name":"Describe","kind":"method","parameters":[],"returns":"text","signature":"Describe() returns text","description":"Describe.","tags":["thing","method","compute.device"],"exampleId":"method-Describe-6","updated":"2026-09-09"}],"tags":["compute","compute.device","cpu","device","method","source-example","thing","yeho"],"updated":"2026-09-09","source":{"repository":"yeho","path":"packages/compute/device/device.yh","line":82,"sha256":"d567cec5c410960532c93c94cdb489280cbff52cec7785f98104cb8cd3ee181c"},"status":"source-declared","notes":["Package presence and a declaration do not establish support on every host. Host services need their platform and lifecycle setup."],"examples":[{"id":"usage","title":"Use deviceFallbackRule","description":"A complete small caller. Values are illustrative; check the returned result and package requirements before connecting live resources.","code":"using compute.device\n\n// Inspect device capability catalogs and model resource lifetimes and placement decisions.\ndeviceFallbackRule sample = deviceFallbackRule(\"requested Backend\", \"fallback Backend\", \"reason\", \"notes\")\nConsole.Log(Text.From(sample.requestedBackend))\n","manifest":"manifestVersion = \"2\"\npackage = \"api.example.compute_device__devicefallbackrule\"\nversion = \"0.1.0\"\nlanguageEdition = \"yeho-core-2026.1\"\n\n[app]\nkind = \"headless\"\n\n[[dependencies]]\npackage = \"compute.buffer\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/buffer\"\n\n[[dependencies]]\npackage = \"compute.device\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/device\"\n\n[[dependencies]]\npackage = \"compute.tensor\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/tensor\"\n\n[[dependencies]]\npackage = \"console\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/console\"\n\n[[dependencies]]\npackage = \"diagnostics\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/diagnostics\"\n","tags":["cpu","source-example"],"verification":"type checked","run":"cpu-oracle","sha256":"003168677caef7f14b2597e9ab0a822af9cfd4b367bab1b70cb0351740ea11ad","checked":"2026-09-09","diagnostic":"","observedOutput":null,"checkedBackend":null},{"id":"method-HasFallback-5","title":"deviceFallbackRule.HasFallback","description":"A complete caller for this public method. Sample inputs are illustrative; native resources require their owning lifecycle.","code":"using compute.device\n\n// Has fallback.\ndeviceFallbackRule instance = deviceFallbackRule(\"requested Backend\", \"fallback Backend\", \"reason\", \"notes\")\nbool result = instance.HasFallback()\nConsole.Log(Text.From(result))\n","manifest":"manifestVersion = \"2\"\npackage = \"api.example.compute_device__devicefallbackrule\"\nversion = \"0.1.0\"\nlanguageEdition = \"yeho-core-2026.1\"\n\n[app]\nkind = \"headless\"\n\n[[dependencies]]\npackage = \"compute.buffer\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/buffer\"\n\n[[dependencies]]\npackage = \"compute.device\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/device\"\n\n[[dependencies]]\npackage = \"compute.tensor\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/tensor\"\n\n[[dependencies]]\npackage = \"console\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/console\"\n\n[[dependencies]]\npackage = \"diagnostics\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/diagnostics\"\n","tags":["cpu","method","source-example"],"run":"cpu-oracle","verification":"type checked","sha256":"44e6871d5bb9fc9f436403c7c45bddabbbb4b2c3072aa6556183bceaefd30de3","checked":"2026-09-09","diagnostic":"","observedOutput":null,"checkedBackend":null},{"id":"method-Describe-6","title":"deviceFallbackRule.Describe","description":"A complete caller for this public method. Sample inputs are illustrative; native resources require their owning lifecycle.","code":"using compute.device\n\n// Describe.\ndeviceFallbackRule instance = deviceFallbackRule(\"requested Backend\", \"fallback Backend\", \"reason\", \"notes\")\ntext result = instance.Describe()\nConsole.Log(Text.From(result))\n","manifest":"manifestVersion = \"2\"\npackage = \"api.example.compute_device__devicefallbackrule\"\nversion = \"0.1.0\"\nlanguageEdition = \"yeho-core-2026.1\"\n\n[app]\nkind = \"headless\"\n\n[[dependencies]]\npackage = \"compute.buffer\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/buffer\"\n\n[[dependencies]]\npackage = \"compute.device\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/device\"\n\n[[dependencies]]\npackage = \"compute.tensor\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/compute/tensor\"\n\n[[dependencies]]\npackage = \"console\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/console\"\n\n[[dependencies]]\npackage = \"diagnostics\"\nversion = \"0.1.0\"\npath = \"../../../yeho/packages/diagnostics\"\n","tags":["cpu","method","source-example"],"run":"cpu-oracle","verification":"type checked","sha256":"56da0b5501349a379cd0afca20e0c6675ac11599b4577f35f43960e9844fc1fc","checked":"2026-09-09","diagnostic":"","observedOutput":null,"checkedBackend":null}],"searchTerms":["requestedBackend","fallbackBackend","reason","notes","deviceFallbackRule","HasFallback","Describe"],"url":"https://demonhunterlabs.com/academy/api?item=compute.device--deviceFallbackRule","json":"https://demonhunterlabs.com/reference/items/compute.device--deviceFallbackRule.json","markdown":"https://demonhunterlabs.com/reference/text/compute.device--deviceFallbackRule.md"}