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Frontmatter

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Author 1
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uuids_with_hidden_message = filter(!isnothing ∘ to_string, registered_uuids)
83.5 ms
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[
to_string(uuid) => r.pkgs[uuid]
for uuid in uuids_with_hidden_message
]
60.2 ms
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Enter cell code...
68.4 μs
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import Pkg
192 μs
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Pkg.Registry.status()
❔
Registry Status 
 [23338594] General
181 ms
_get_registry_paths

Return paths to all installed registries.

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# (⛔️ Internal API)
"Return paths to all installed registries."
_get_registry_paths() = @static if isdefined(Pkg, :Types) && isdefined(Pkg.Types, :registries)
Pkg.Types.registries()
elseif isdefined(Pkg, :Registry) && isdefined(Pkg.Registry, :reachable_registries)
registry_specs = Pkg.Registry.reachable_registries()
[s.path for s in registry_specs]
elseif isdefined(Pkg, :Types) && isdefined(Pkg.Types, :collect_registries)
registry_specs = Pkg.Types.collect_registries()
[s.path for s in registry_specs]
else
String[]
end
1.6 ms
_get_registries (generic function with 1 method)
# (⛔️ Internal API)
_get_registries() = map(_get_registry_paths()) do r
@static if isdefined(Pkg, :Registry) && isdefined(Pkg.Registry, :RegistryInstance)
Pkg.Registry.RegistryInstance(r)
else
r => Pkg.Types.read_registry(joinpath(r, "Registry.toml"))
end
end
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990 μs
rs = _get_registries()
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165 μs
Registry: "General" at "/home/runner/.julia/registries/General.toml":
  uuid: 23338594-aafe-5451-b93e-139f81909106
  repo: https://github.com/JuliaRegistries/General.git
  git-tree-sha1: 2bcb0a1806c6847d7de144aee5e48cce6cd33338
  packages: 12303
r = last(rs)
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14.3 μs
registered_uuids = keys(r.pkgs)
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18.2 μs

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67.1 μs
UUID("6e696c72-6542-2067-7265-42206c756150")
u2 = Base.UUID(reinterpret(Int128, codeunits("Paul Berg Berlin")) |> first)
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40.9 ms
"Paul Berg Berlin"
to_string(u2)
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15.5 μs
using UUIDs
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146 μs
UUID("7cc45869-7501-5eee-bdea-0790c847d4ef")
u = UUID("7cc45869-7501-5eee-bdea-0790c847d4ef")

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15.3 μs
to_string(u)
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13.2 μs
0x7cc4586975015eeebdea0790c847d4ef
u.value
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12.1 μs
to_string (generic function with 1 method)
function to_string(uuid::UUID)
chars = reinterpret(UInt8, [uuid.value])
result = String(chars)
if isascii(result) && !any(iscntrl, result)
result
else
nothing
end
end
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642 μs

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67.2 μs

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66.8 μs
keys(r.pkgs)
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13.1 μs