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Joe Tsai 241a541864 util/ctxkey: add package for type-safe context keys (#10841) ... The lack of type-safety in context.WithValue leads to the common pattern of defining of package-scoped type to ensure global uniqueness: type fooKey struct{} func withFoo(ctx context, v Foo) context.Context { return context.WithValue(ctx, fooKey{}, v) } func fooValue(ctx context) Foo { v, _ := ctx.Value(fooKey{}).(Foo) return v } where usage becomes: ctx = withFoo(ctx, foo) foo := fooValue(ctx) With many different context keys, this can be quite tedious. Using generics, we can simplify this as: var fooKey = ctxkey.New("mypkg.fooKey", Foo{}) where usage becomes: ctx = fooKey.WithValue(ctx, foo) foo := fooKey.Value(ctx) See https://go.dev/issue/49189 Updates #cleanup Signed-off-by: Joe Tsai <joetsai@digital-static.net>		9 months ago
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cache	util/cache: add package for general-purpose caching	10 months ago
cibuild	all: update copyright and license headers	2 years ago
clientmetric	util/clientmetric: allow client metric values to be provided by a function	2 years ago
cloudenv	all: update copyright and license headers	2 years ago
cmpver	util/cmpver: only consider ascii numerals (#9741)	12 months ago
cmpx	util/cmpx: remove code that's in the stdlib now	9 months ago
codegen	util/codegen: support embedded fields	1 year ago
cstruct	all: update copyright and license headers	2 years ago
ctxkey	util/ctxkey: add package for type-safe context keys (#10841)	9 months ago
deephash	all: cleanup unused code, part 1 (#10661)	9 months ago
dirwalk	all: use tstest.Replace more	2 years ago
dnsname	cmd/tailscale: extend hostname validation (#7678)	2 years ago
goroutines	util/goroutines: let ScrubbedGoroutineDump get only current stack	1 year ago
groupmember	util/groupmember: fail earlier if group doesn't exist, use slices.Contains	11 months ago
hashx	all: update copyright and license headers	2 years ago
httphdr	util/httphdr: add new package for parsing HTTP headers (#9797)	12 months ago
httpm	util/httpm: don't run test if .git doesn't exist	10 months ago
jsonutil	all: update copyright and license headers	2 years ago
limiter	util/lru, util/limiter: add debug helper to dump state as HTML	1 year ago
lineread	all: update copyright and license headers	2 years ago
linuxfw	all: cleanup unused code, part 2 (#10670)	9 months ago
lru	util/lru: update c.head when deleting the most recently used entry	1 year ago
mak	various: add golangci-lint, fix issues (#7905)	1 year ago
multierr	all: use Go 1.21 slices, maps instead of x/exp/{slices,maps}	1 year ago
must	all: update copyright and license headers	2 years ago
nocasemaps	util/nocasemaps: import nocasemaps from corp	12 months ago
osdiag	util/osdiag, util/winutil: expose Windows policy key	11 months ago
osshare	all: update copyright and license headers	2 years ago
osuser	ssh/tailssh,util: extract new osuser package from ssh code (#10170)	11 months ago
pidowner	all: update copyright and license headers	2 years ago
precompress	all: update copyright and license headers	2 years ago
quarantine	all: update copyright and license headers	2 years ago
race	util/race: add test to confirm we don't leak goroutines	12 months ago
racebuild	all: update copyright and license headers	2 years ago
rands	util/rands: add package with HexString func	1 year ago
ringbuffer	util/ringbuffer: move generic ringbuffer from corp repo	2 years ago
set	util/set: implement json.Marshaler/Unmarshaler (#10308)	10 months ago
singleflight	all: update copyright and license headers	2 years ago
slicesx	util/slicesx: add EqualSameNil, like slices.Equal but same nilness	1 year ago
syspolicy	all: cleanup unused code, part 1 (#10661)	9 months ago
sysresources	util/sysresources, magicsock: scale DERP buffer based on system memory	2 years ago
systemd	all: update copyright and license headers	2 years ago
testenv	util/testenv: add new package to hold InTest	1 year ago
truncate	util: add truncate package (#7490)	2 years ago
uniq	all: update copyright and license headers	2 years ago
vizerror	util/vizerror: add As function to get wrapped Error	2 years ago
winutil	util/winutil: add some missing docs to restartmgr errors	9 months ago