update tool package

go.mod

@@ -4,10 +4,16 @@ go 1.17
 
 require (
 	github.com/Rican7/retry v0.1.0
+	github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de
+	github.com/bits-and-blooms/bitset v1.2.1
 	github.com/btcsuite/btcd v0.21.0-beta
+	github.com/bxcodec/faker/v3 v3.6.0
 	github.com/cbergoon/merkletree v0.2.0
+	github.com/creasty/defaults v1.5.2
+	github.com/deckarep/golang-set v1.7.2-0.20201129021324-03b572015f8e
 	github.com/fatih/color v1.12.0
 	github.com/fsnotify/fsnotify v1.4.9
+	github.com/gammazero/deque v0.1.0
 	github.com/gin-gonic/gin v1.6.3
 	github.com/gobuffalo/packd v1.0.0
 	github.com/gobuffalo/packr v1.30.1
@@ -19,7 +25,13 @@ require (
 	github.com/hashicorp/go-hclog v0.0.0-20180709165350-ff2cf002a8dd
 	github.com/hashicorp/go-multierror v1.1.0
 	github.com/hashicorp/go-plugin v1.3.0
+	github.com/huandu/skiplist v1.2.0
+	github.com/huandu/xstrings v1.3.2
+	github.com/imdario/mergo v0.3.12
 	github.com/ipfs/go-cid v0.0.7
+	github.com/jinzhu/copier v0.3.2
+	github.com/jinzhu/now v1.1.2
+	github.com/juju/errors v0.0.0-20210818161939-5560c4c073ff
 	github.com/lestrrat-go/file-rotatelogs v2.2.0+incompatible
 	github.com/libp2p/go-libp2p-core v0.6.1
 	github.com/meshplus/bitxhub-core v1.3.1-0.20210524071255-789fd9ab501c
@@ -29,9 +41,12 @@ require (
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/multiformats/go-multiaddr v0.3.0
 	github.com/rifflock/lfshook v0.0.0-20180920164130-b9218ef580f5
+	github.com/seiflotfy/cuckoofilter v0.0.0-20201222105146-bc6005554a0c
 	github.com/sirupsen/logrus v1.6.0
+	github.com/spf13/cast v1.4.1
 	github.com/spf13/viper v1.7.0
 	github.com/stretchr/testify v1.7.0
+	github.com/thoas/go-funk v0.9.1
 	github.com/tidwall/gjson v1.6.8
 	github.com/urfave/cli v1.22.1
 	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
@@ -39,14 +54,11 @@ require (
 )
 
 require (
-	github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de // indirect
-	github.com/bxcodec/faker/v3 v3.6.0 // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d // indirect
-	github.com/creasty/defaults v1.5.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/davidlazar/go-crypto v0.0.0-20190912175916-7055855a373f // indirect
-	github.com/deckarep/golang-set v1.7.2-0.20201129021324-03b572015f8e // indirect
+	github.com/dgryski/go-metro v0.0.0-20200812162917-85c65e2d0165 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.13.0 // indirect
 	github.com/go-playground/universal-translator v0.17.0 // indirect
@@ -60,9 +72,7 @@ require (
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb // indirect
-	github.com/huandu/xstrings v1.3.2 // indirect
 	github.com/huin/goupnp v1.0.0 // indirect
-	github.com/imdario/mergo v0.3.12 // indirect
 	github.com/ipfs/go-datastore v0.4.4 // indirect
 	github.com/ipfs/go-ipfs-util v0.0.1 // indirect
 	github.com/ipfs/go-ipns v0.0.2 // indirect
@@ -71,11 +81,8 @@ require (
 	github.com/jackpal/go-nat-pmp v1.0.2 // indirect
 	github.com/jbenet/go-temp-err-catcher v0.1.0 // indirect
 	github.com/jbenet/goprocess v0.1.4 // indirect
-	github.com/jinzhu/copier v0.3.2 // indirect
-	github.com/jinzhu/now v1.1.2 // indirect
 	github.com/joho/godotenv v1.3.0 // indirect
 	github.com/json-iterator/go v1.1.11 // indirect
-	github.com/juju/errors v0.0.0-20210818161939-5560c4c073ff // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
 	github.com/koron/go-ssdp v0.0.0-20191105050749-2e1c40ed0b5d // indirect
 	github.com/leodido/go-urn v1.2.0 // indirect
@@ -148,12 +155,10 @@ require (
 	github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572 // indirect
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
 	github.com/spf13/afero v1.1.2 // indirect
-	github.com/spf13/cast v1.4.1 // indirect
 	github.com/spf13/jwalterweatherman v1.0.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/subosito/gotenv v1.2.0 // indirect
 	github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954 // indirect
-	github.com/thoas/go-funk v0.9.1 // indirect
 	github.com/tidwall/match v1.0.3 // indirect
 	github.com/tidwall/pretty v1.0.2 // indirect
 	github.com/ugorji/go/codec v1.1.7 // indirect
@@ -170,7 +175,7 @@ require (
 	google.golang.org/protobuf v1.25.0 // indirect
 	gopkg.in/ini.v1 v1.51.0 // indirect
 	gopkg.in/yaml.v2 v2.3.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20200601152816-913338de1bd2 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c // indirect
 )
 
 replace github.com/libp2p/go-libp2p-core => github.com/libp2p/go-libp2p-core v0.5.6

go.sum

@@ -51,6 +51,8 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/bits-and-blooms/bitset v1.2.1 h1:M+/hrU9xlMp7t4TyTDQW97d3tRPVuKFC6zBEK16QnXY=
+github.com/bits-and-blooms/bitset v1.2.1/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
 github.com/bombsimon/wsl/v2 v2.0.0/go.mod h1:mf25kr/SqFEPhhcxW1+7pxzGlW+hIl/hYTKY95VwV8U=
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
@@ -106,8 +108,6 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davidlazar/go-crypto v0.0.0-20170701192655-dcfb0a7ac018/go.mod h1:rQYf4tfk5sSwFsnDg3qYaBxSjsD9S8+59vW0dKUgme4=
 github.com/davidlazar/go-crypto v0.0.0-20190912175916-7055855a373f h1:BOaYiTvg8p9vBUXpklC22XSK/mifLF7lG9jtmYYi3Tc=
 github.com/davidlazar/go-crypto v0.0.0-20190912175916-7055855a373f/go.mod h1:rQYf4tfk5sSwFsnDg3qYaBxSjsD9S8+59vW0dKUgme4=
-github.com/deckarep/golang-set v1.7.1 h1:SCQV0S6gTtp6itiFrTqI+pfmJ4LN85S1YzhDf9rTHJQ=
-github.com/deckarep/golang-set v1.7.1/go.mod h1:93vsz/8Wt4joVM7c2AVqh+YRMiUSc14yDtF28KmMOgQ=
 github.com/deckarep/golang-set v1.7.2-0.20201129021324-03b572015f8e h1:cZH/C3SR4/BGzKwFwtq5PfYqbKYeJpSFw/4coUAV0/A=
 github.com/deckarep/golang-set v1.7.2-0.20201129021324-03b572015f8e/go.mod h1:93vsz/8Wt4joVM7c2AVqh+YRMiUSc14yDtF28KmMOgQ=
 github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0tEMk218=
@@ -119,6 +119,8 @@ github.com/dgraph-io/ristretto v0.0.2/go.mod h1:KPxhHT9ZxKefz+PCeOGsrHpl1qZ7i70d
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-farm v0.0.0-20190104051053-3adb47b1fb0f/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
+github.com/dgryski/go-metro v0.0.0-20200812162917-85c65e2d0165 h1:BS21ZUJ/B5X2UVUbczfmdWH7GapPWAhxcMsDnjJTU1E=
+github.com/dgryski/go-metro v0.0.0-20200812162917-85c65e2d0165/go.mod h1:c9O8+fpSOX1DM8cPNSkX/qsBWdkD4yd2dpciOWQjpBw=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
 github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
@@ -144,6 +146,8 @@ github.com/frankban/quicktest v1.10.0/go.mod h1:ui7WezCLWMWxVWr1GETZY3smRy0G4KWq
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
+github.com/gammazero/deque v0.1.0 h1:f9LnNmq66VDeuAlSAapemq/U7hJ2jpIWa4c09q8Dlik=
+github.com/gammazero/deque v0.1.0/go.mod h1:KQw7vFau1hHuM8xmI9RbgKFbAsQFWmBpqQ2KenFLk6M=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
 github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
@@ -330,6 +334,10 @@ github.com/hashicorp/serf v0.8.2/go.mod h1:6hOLApaqBFA1NXqRQAsxw9QxuDEvNxSQRwA/J
 github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb h1:b5rjCoWHc7eqmAS4/qyk21ZsHyb6Mxv/jykxvNTkU4M=
 github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/huandu/go-assert v1.1.5 h1:fjemmA7sSfYHJD7CUqs9qTwwfdNAx7/j2/ZlHXzNB3c=
+github.com/huandu/go-assert v1.1.5/go.mod h1:yOLvuqZwmcHIC5rIzrBhT7D3Q9c3GFnd0JrPVhn/06U=
+github.com/huandu/skiplist v1.2.0 h1:gox56QD77HzSC0w+Ws3MH3iie755GBJU1OER3h5VsYw=
+github.com/huandu/skiplist v1.2.0/go.mod h1:7v3iFjLcSAzO4fN5B8dvebvo/qsfumiLiDXMrPiHF9w=
 github.com/huandu/xstrings v1.3.2 h1:L18LIDzqlW6xN2rEkpdV8+oL/IXWJ1APd+vsdYy4Wdw=
 github.com/huandu/xstrings v1.3.2/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/hudl/fargo v1.3.0/go.mod h1:y3CKSmjA+wD2gak7sUSXTAoopbhU08POFhmITJgmKTg=
@@ -426,7 +434,9 @@ github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/juju/errors v0.0.0-20210818161939-5560c4c073ff h1:WLHwK6yMswDvGUNrkxp4GYnrbQS8WULu1D3qteVdUIg=
 github.com/juju/errors v0.0.0-20210818161939-5560c4c073ff/go.mod h1:i1eL7XREII6aHpQ2gApI/v6FkVUDEBremNkcBCKYAcY=
+github.com/juju/loggo v0.0.0-20170605014607-8232ab8918d9 h1:Y+lzErDTURqeXqlqYi4YBYbDd7ycU74gW1ADt57/bgY=
 github.com/juju/loggo v0.0.0-20170605014607-8232ab8918d9/go.mod h1:vgyd7OREkbtVEN/8IXZe5Ooef3LQePvuBm9UWj6ZL8U=
+github.com/juju/testing v0.0.0-20180517134105-72703b1e95eb h1:oHBF98WnC1lqCv/W7I7gxnLjD6xJieJ8yt/3IrnMthY=
 github.com/juju/testing v0.0.0-20180517134105-72703b1e95eb/go.mod h1:63prj8cnj0tU0S9OHjGJn+b1h0ZghCndfnbQolrYTwA=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/karrick/godirwalk v1.10.12/go.mod h1:RoGL9dQei4vP9ilrpETWE8CLOZ1kiN0LhBygSwrAsHA=
@@ -844,6 +854,8 @@ github.com/samuel/go-zookeeper v0.0.0-20190923202752-2cc03de413da/go.mod h1:gi+0
 github.com/scylladb/termtables v0.0.0-20191203121021-c4c0b6d42ff4/go.mod h1:C1a7PQSMz9NShzorzCiG2fk9+xuCgLkPeCvMHYR2OWg=
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc=
 github.com/securego/gosec v0.0.0-20200103095621-79fbf3af8d83/go.mod h1:vvbZ2Ae7AzSq3/kywjUDxSNq2SJ27RxCz2un0H3ePqE=
+github.com/seiflotfy/cuckoofilter v0.0.0-20201222105146-bc6005554a0c h1:pqy40B3MQWYrza7YZXOXgl0Nf0QGFqrOC0BKae1UNAA=
+github.com/seiflotfy/cuckoofilter v0.0.0-20201222105146-bc6005554a0c/go.mod h1:bR6DqgcAl1zTcOX8/pE2Qkj9XO00eCNqmKb7lXP8EAg=
 github.com/shirou/gopsutil v0.0.0-20190901111213-e4ec7b275ada/go.mod h1:WWnYX4lzhCH5h/3YBfyVA3VbLYjlMZZAQcW9ojMexNc=
 github.com/shirou/w32 v0.0.0-20160930032740-bb4de0191aa4/go.mod h1:qsXQc7+bwAM3Q1u/4XEfrquwF8Lw7D7y5cD8CuHnfIc=
 github.com/shurcooL/go v0.0.0-20180423040247-9e1955d9fb6e/go.mod h1:TDJrrUr11Vxrven61rcy3hJMUqaf/CLWYhHNPmT14Lk=
@@ -869,7 +881,6 @@ github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0b
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/spf13/afero v1.1.2 h1:m8/z1t7/fwjysjQRYbP0RD+bUIF/8tJwPdEZsI83ACI=
 github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
-github.com/spf13/cast v1.3.0 h1:oget//CVOEoFewqQxwr0Ej5yjygnqGkvggSE/gB35Q8=
 github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
 github.com/spf13/cast v1.4.1 h1:s0hze+J0196ZfEMTs80N7UlFt0BDuQ7Q+JDnHiMWKdA=
 github.com/spf13/cast v1.4.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
@@ -1255,6 +1266,7 @@ gopkg.in/jcmturner/dnsutils.v1 v1.0.1/go.mod h1:m3v+5svpVOhtFAP/wSz+yzh4Mc0Fg7eR
 gopkg.in/jcmturner/goidentity.v3 v3.0.0/go.mod h1:oG2kH0IvSYNIu80dVAyu/yoefjq1mNfM5bm88whjWx4=
 gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
 gopkg.in/jcmturner/rpc.v1 v1.1.0/go.mod h1:YIdkC4XfD6GXbzje11McwsDuOlZQSb9W4vfLvuNnlv8=
+gopkg.in/mgo.v2 v2.0.0-20160818015218-f2b6f6c918c4 h1:hILp2hNrRnYjZpmIbx70psAHbBSEcQ1NIzDcUbJ1b6g=
 gopkg.in/mgo.v2 v2.0.0-20160818015218-f2b6f6c918c4/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
@@ -1272,8 +1284,9 @@ gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20200601152816-913338de1bd2 h1:VEmvx0P+GVTgkNu2EdTN988YCZPcD3lo9AoczZpucwc=
 gopkg.in/yaml.v3 v3.0.0-20200601152816-913338de1bd2/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c h1:grhR+C34yXImVGp7EzNk+DTIk+323eIUWOmEevy6bDo=
+gopkg.in/yaml.v3 v3.0.0-20200605160147-a5ece683394c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

tool/filter.go

+package tool
+
+// cuckoofilter
+// https://github.com/seiflotfy/cuckoofilter

tool/filter_test.go

+package tool
+
+import (
+	"fmt"
+	"testing"
+
+	cuckoo "github.com/seiflotfy/cuckoofilter"
+)
+
+func TestFilter(t *testing.T) {
+	cf := cuckoo.NewFilter(1000)
+	cf.InsertUnique([]byte("geeky ogre"))
+
+	// Lookup a string (and it a miss) if it exists in the cuckoofilter
+	cf.Lookup([]byte("hello"))
+
+	count := cf.Count()
+	fmt.Println(count) // count == 1
+
+	// Delete a string (and it a miss)
+	cf.Delete([]byte("hello"))
+
+	count = cf.Count()
+	fmt.Println(count) // count == 1
+
+	// Delete a string (a hit)
+	cf.Delete([]byte("geeky ogre"))
+
+	count = cf.Count()
+	fmt.Println(count) // count == 0
+
+	cf.Reset() // reset
+}

tool/stl_test.go

+package tool
+
+import (
+	"fmt"
+	"math/rand"
+	"testing"
+
+	"github.com/bits-and-blooms/bitset"
+	"github.com/gammazero/deque"
+	"github.com/huandu/skiplist"
+)
+
+func TestSkipList(t *testing.T) {
+	// Create a skip list with int key.
+	list := skiplist.New(skiplist.Int)
+
+	// Add some values. Value can be anything.
+	list.Set(12, "hello world")
+	list.Set(34, 56)
+	list.Set(78, 90.12)
+
+	// Get element by index.
+	elem := list.Get(34)                // Value is stored in elem.Value.
+	fmt.Println(elem.Value)             // Output: 56
+	next := elem.Next()                 // Get next element.
+	prev := next.Prev()                 // Get previous element.
+	fmt.Println(next.Value, prev.Value) // Output: 90.12    56
+
+	// Or, directly get value just like a map
+	val, ok := list.GetValue(34)
+	fmt.Println(val, ok) // Output: 56  true
+
+	// Find first elements with score greater or equal to key
+	foundElem := list.Find(30)
+	fmt.Println(foundElem.Key(), foundElem.Value) // Output: 34 56
+
+	// Remove an element for key.
+	list.Remove(34)
+}
+
+// Queue using PushBack and PopFront
+// Stack using PushBack and PopBack
+func TestDeque(t *testing.T) {
+	var q deque.Deque
+	q.PushBack("foo")
+	q.PushBack("bar")
+	q.PushBack("baz")
+
+	fmt.Println(q.Len())   // Prints: 3
+	fmt.Println(q.Front()) // Prints: foo
+	fmt.Println(q.Back())  // Prints: baz
+
+	q.PopFront() // remove "foo"
+	q.PopBack()  // remove "baz"
+
+	q.PushFront("hello")
+	q.PushBack("world")
+
+	// Consume deque and print elements.
+	for q.Len() != 0 {
+		fmt.Println(q.PopFront())
+	}
+}
+
+// bitsets
+func TestBitsets(t *testing.T) {
+	fmt.Printf("Hello from BitSet!\n")
+	var b bitset.BitSet
+	// play some Go Fish
+	for i := 0; i < 100; i++ {
+		card1 := uint(rand.Intn(52))
+		card2 := uint(rand.Intn(52))
+		b.Set(card1)
+		if b.Test(card2) {
+			fmt.Println("Go Fish!")
+		}
+		b.Clear(card1)
+	}
+
+	// Chaining
+	b.Set(10).Set(11)
+
+	for i, e := b.NextSet(0); e; i, e = b.NextSet(i + 1) {
+		fmt.Println("The following bit is set:", i)
+	}
+	if b.Intersection(bitset.New(100).Set(10)).Count() == 1 {
+		fmt.Println("Intersection works.")
+	} else {
+		fmt.Println("Intersection doesn't work???")
+	}
+}