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util/slicesx: add MapKeys and MapValues from golang.org/x/exp/maps

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Importing the ~deprecated golang.org/x/exp/maps as "xmaps" to not
shadow the std "maps" was getting ugly.

And using slices.Collect on an iterator is verbose & allocates more.

So copy (x)maps.Keys+Values into our slicesx package instead.

Updates #cleanup
Updates #12912
Updates #14514 (pulled out of that change)

Change-Id: I5e68d12729934de93cf4a9cd87c367645f86123a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2025-01-03 10:41:02 -08:00
committed by Brad Fitzpatrick
parent 17b881538a
commit 1e2e319e7d
17 changed files with 76 additions and 41 deletions
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cmd/tailscale/depaware.txt
+1 -1
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@@ -202,7 +202,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
golang.org/x/crypto/salsa20/salsa from golang.org/x/crypto/nacl/box+
golang.org/x/crypto/sha3 from crypto/internal/mlkem768+
W golang.org/x/exp/constraints from github.com/dblohm7/wingoes/pe+
golang.org/x/exp/maps from tailscale.com/cmd/tailscale/cli+
golang.org/x/exp/maps from tailscale.com/util/syspolicy/internal/metrics+
golang.org/x/net/bpf from github.com/mdlayher/netlink+
golang.org/x/net/dns/dnsmessage from net+
golang.org/x/net/http/httpguts from net/http+