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Golang encoding.EncodeFloatAscending函数代码示例

本文整理汇总了Golang中github.com/cockroachdb/cockroach/util/encoding.EncodeFloatAscending函数的典型用法代码示例。如果您正苦于以下问题：Golang EncodeFloatAscending函数的具体用法？Golang EncodeFloatAscending怎么用？Golang EncodeFloatAscending使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了EncodeFloatAscending函数的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: TestPrettyPrint

func TestPrettyPrint(t *testing.T) {

	tm, _ := time.Parse(time.UnixDate, "Sat Mar  7 11:06:39 UTC 2015")
	txnID := uuid.NewV4()

	testCases := []struct {
		key roachpb.Key
		exp string
	}{
		// local
		{StoreIdentKey(), "/Local/Store/storeIdent"},
		{StoreGossipKey(), "/Local/Store/gossipBootstrap"},

		{SequenceCacheKeyPrefix(roachpb.RangeID(1000001), txnID), fmt.Sprintf(`/Local/RangeID/1000001/r/SequenceCache/%q`, txnID)},
		{SequenceCacheKey(roachpb.RangeID(1000001), txnID, uint32(111), uint32(222)), fmt.Sprintf(`/Local/RangeID/1000001/r/SequenceCache/%q/epoch:111/seq:222`, txnID)},
		{RaftTombstoneKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTombstone"},
		{RaftAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftAppliedIndex"},
		{RaftTruncatedStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTruncatedState"},
		{RangeLeaderLeaseKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLeaderLease"},
		{RangeStatsKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeStats"},

		{RaftHardStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftHardState"},
		{RaftLastIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftLastIndex"},
		{RaftLogKey(roachpb.RangeID(1000001), uint64(200001)), "/Local/RangeID/1000001/u/RaftLog/logIndex:200001"},
		{RangeLastVerificationTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastVerificationTimestamp"},

		{MakeRangeKeyPrefix(roachpb.RKey("ok")), `/Local/Range/"ok"`},
		{RangeDescriptorKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeDescriptor`},
		{RangeTreeNodeKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeTreeNode`},
		{TransactionKey(roachpb.Key("111"), txnID), fmt.Sprintf(`/Local/Range/"111"/Transaction/addrKey:/id:%q`, txnID)},

		{LocalMax, `/Meta1/""`}, // LocalMax == Meta1Prefix

		// system
		{makeKey(Meta2Prefix, roachpb.Key("foo")), `/Meta2/"foo"`},
		{makeKey(Meta1Prefix, roachpb.Key("foo")), `/Meta1/"foo"`},
		{RangeMetaKey(roachpb.RKey("f")), `/Meta2/"f"`},

		{StoreStatusKey(2222), "/System/StatusStore/2222"},
		{NodeStatusKey(1111), "/System/StatusNode/1111"},

		{SystemMax, "/System/Max"},

		// key of key
		{RangeMetaKey(roachpb.RKey(MakeRangeKeyPrefix(roachpb.RKey("ok")))), `/Meta2/Local/Range/"ok"`},
		{RangeMetaKey(roachpb.RKey(makeKey(MakeTablePrefix(42), roachpb.RKey("foo")))), `/Meta2/Table/42/"foo"`},
		{RangeMetaKey(roachpb.RKey(makeKey(Meta2Prefix, roachpb.Key("foo")))), `/Meta1/"foo"`},

		// table
		{UserTableDataMin, "/Table/50"},
		{MakeTablePrefix(111), "/Table/111"},
		{makeKey(MakeTablePrefix(42), roachpb.RKey("foo")), `/Table/42/"foo"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, float64(233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatDescending(nil, float64(-233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.Inf(1)))),
			"/Table/42/+Inf"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.NaN()))),
			"/Table/42/NaN"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222)),
			roachpb.RKey(encoding.EncodeStringAscending(nil, "handsome man"))),
			`/Table/42/1222/"handsome man"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222))),
			`/Table/42/1222`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintDescending(nil, 1222))),
			`/Table/42/-1223`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255}))),
			`/Table/42/"\x01\x02\b\xff"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesDescending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNullAscending(nil))), "/Table/42/NULL"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNotNullAscending(nil))), "/Table/42/#"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeAscending(nil, tm))),
			"/Table/42/Sat Mar  7 11:06:39 UTC 2015"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeDescending(nil, tm))),
			"/Table/42/Sat Mar  7 11:06:39 UTC 2015"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeDecimalAscending(nil, inf.NewDec(1234, 2)))),
			"/Table/42/12.34"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeDecimalDescending(nil, inf.NewDec(1234, 2)))),
			"/Table/42/-12.34"},

//.........这里部分代码省略.........
开发者ID:liugangnhm，项目名称:cockroach，代码行数:101，代码来源:printer_test.go

示例2: encodeTableKey

// Encodes `val` into `b` and returns the new buffer.
func encodeTableKey(b []byte, val parser.Datum, dir encoding.Direction) ([]byte, *roachpb.Error) {
	if (dir != encoding.Ascending) && (dir != encoding.Descending) {
		return nil, roachpb.NewErrorf("invalid direction: %d", dir)
	}

	if val == parser.DNull {
		if dir == encoding.Ascending {
			return encoding.EncodeNullAscending(b), nil
		}
		return encoding.EncodeNullDescending(b), nil
	}

	switch t := val.(type) {
	case parser.DBool:
		var x int64
		if t {
			x = 1
		} else {
			x = 0
		}
		if dir == encoding.Ascending {
			return encoding.EncodeVarintAscending(b, x), nil
		}
		return encoding.EncodeVarintDescending(b, x), nil
	case parser.DInt:
		if dir == encoding.Ascending {
			return encoding.EncodeVarintAscending(b, int64(t)), nil
		}
		return encoding.EncodeVarintDescending(b, int64(t)), nil
	case parser.DFloat:
		if dir == encoding.Ascending {
			return encoding.EncodeFloatAscending(b, float64(t)), nil
		}
		return encoding.EncodeFloatDescending(b, float64(t)), nil
	case parser.DDecimal:
		if dir == encoding.Ascending {
			return encoding.EncodeDecimalAscending(b, t.Decimal), nil
		}
		return encoding.EncodeDecimalDescending(b, t.Decimal), nil
	case parser.DString:
		if dir == encoding.Ascending {
			return encoding.EncodeStringAscending(b, string(t)), nil
		}
		return encoding.EncodeStringDescending(b, string(t)), nil
	case parser.DBytes:
		if dir == encoding.Ascending {
			return encoding.EncodeStringAscending(b, string(t)), nil
		}
		return encoding.EncodeStringDescending(b, string(t)), nil
	case parser.DDate:
		if dir == encoding.Ascending {
			return encoding.EncodeVarintAscending(b, int64(t)), nil
		}
		return encoding.EncodeVarintDescending(b, int64(t)), nil
	case parser.DTimestamp:
		if dir == encoding.Ascending {
			return encoding.EncodeTimeAscending(b, t.Time), nil
		}
		return encoding.EncodeTimeDescending(b, t.Time), nil
	case parser.DInterval:
		if dir == encoding.Ascending {
			return encoding.EncodeVarintAscending(b, int64(t.Duration)), nil
		}
		return encoding.EncodeVarintDescending(b, int64(t.Duration)), nil
	}
	return nil, roachpb.NewUErrorf("unable to encode table key: %T", val)
}
开发者ID:ekkotron，项目名称:cockroach，代码行数:68，代码来源:table.go

示例3: EncodeTableKey

// EncodeTableKey encodes `val` into `b` and returns the new buffer.
func EncodeTableKey(b []byte, val parser.Datum, dir encoding.Direction) ([]byte, error) {
	if (dir != encoding.Ascending) && (dir != encoding.Descending) {
		return nil, util.Errorf("invalid direction: %d", dir)
	}

	if val == parser.DNull {
		if dir == encoding.Ascending {
			return encoding.EncodeNullAscending(b), nil
		}
		return encoding.EncodeNullDescending(b), nil
	}

	switch t := val.(type) {
	case *parser.DBool:
		var x int64
		if *t {
			x = 1
		} else {
			x = 0
		}
		if dir == encoding.Ascending {
			return encoding.EncodeVarintAscending(b, x), nil
		}
		return encoding.EncodeVarintDescending(b, x), nil
	case *parser.DInt:
		if dir == encoding.Ascending {
			return encoding.EncodeVarintAscending(b, int64(*t)), nil
		}
		return encoding.EncodeVarintDescending(b, int64(*t)), nil
	case *parser.DFloat:
		if dir == encoding.Ascending {
			return encoding.EncodeFloatAscending(b, float64(*t)), nil
		}
		return encoding.EncodeFloatDescending(b, float64(*t)), nil
	case *parser.DDecimal:
		if dir == encoding.Ascending {
			return encoding.EncodeDecimalAscending(b, &t.Dec), nil
		}
		return encoding.EncodeDecimalDescending(b, &t.Dec), nil
	case *parser.DString:
		if dir == encoding.Ascending {
			return encoding.EncodeStringAscending(b, string(*t)), nil
		}
		return encoding.EncodeStringDescending(b, string(*t)), nil
	case *parser.DBytes:
		if dir == encoding.Ascending {
			return encoding.EncodeStringAscending(b, string(*t)), nil
		}
		return encoding.EncodeStringDescending(b, string(*t)), nil
	case *parser.DDate:
		if dir == encoding.Ascending {
			return encoding.EncodeVarintAscending(b, int64(*t)), nil
		}
		return encoding.EncodeVarintDescending(b, int64(*t)), nil
	case *parser.DTimestamp:
		if dir == encoding.Ascending {
			return encoding.EncodeTimeAscending(b, t.Time), nil
		}
		return encoding.EncodeTimeDescending(b, t.Time), nil
	case *parser.DTimestampTZ:
		if dir == encoding.Ascending {
			return encoding.EncodeTimeAscending(b, t.Time), nil
		}
		return encoding.EncodeTimeDescending(b, t.Time), nil
	case *parser.DInterval:
		if dir == encoding.Ascending {
			return encoding.EncodeDurationAscending(b, t.Duration)
		}
		return encoding.EncodeDurationDescending(b, t.Duration)
	case *parser.DTuple:
		for _, datum := range *t {
			var err error
			b, err = EncodeTableKey(b, datum, dir)
			if err != nil {
				return nil, err
			}
		}
		return b, nil
	}
	return nil, util.Errorf("unable to encode table key: %T", val)
}
开发者ID:GitGoldie，项目名称:cockroach，代码行数:82，代码来源:table.go

示例4: TestPrettyPrint

func TestPrettyPrint(t *testing.T) {

	tm, _ := time.Parse(time.RFC3339Nano, "2016-03-30T13:40:35.053725008Z")
	duration := duration.Duration{Months: 1, Days: 1, Nanos: 1 * time.Second.Nanoseconds()}
	durationAsc, _ := encoding.EncodeDurationAscending(nil, duration)
	durationDesc, _ := encoding.EncodeDurationDescending(nil, duration)
	txnID := uuid.NewV4()

	// The following test cases encode keys with a mixture of ascending and descending direction,
	// but always decode keys in the ascending direction. This is why some of the decoded values
	// seem bizarre.
	testCases := []struct {
		key roachpb.Key
		exp string
	}{
		// local
		{StoreIdentKey(), "/Local/Store/storeIdent"},
		{StoreGossipKey(), "/Local/Store/gossipBootstrap"},

		{AbortCacheKey(roachpb.RangeID(1000001), txnID), fmt.Sprintf(`/Local/RangeID/1000001/r/AbortCache/%q`, txnID)},
		{RaftTombstoneKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTombstone"},
		{RaftAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftAppliedIndex"},
		{LeaseAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/LeaseAppliedIndex"},
		{RaftTruncatedStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTruncatedState"},
		{RangeLeaderLeaseKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLeaderLease"},
		{RangeStatsKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeStats"},
		{RangeFrozenStatusKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeFrozenStatus"},
		{RangeLastGCKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLastGC"},

		{RaftHardStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftHardState"},
		{RaftLastIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftLastIndex"},
		{RaftLogKey(roachpb.RangeID(1000001), uint64(200001)), "/Local/RangeID/1000001/u/RaftLog/logIndex:200001"},
		{RangeLastReplicaGCTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastReplicaGCTimestamp"},
		{RangeLastVerificationTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastVerificationTimestamp"},

		{MakeRangeKeyPrefix(roachpb.RKey("ok")), `/Local/Range/"ok"`},
		{RangeDescriptorKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeDescriptor`},
		{RangeTreeNodeKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeTreeNode`},
		{TransactionKey(roachpb.Key("111"), txnID), fmt.Sprintf(`/Local/Range/"111"/Transaction/addrKey:/id:%q`, txnID)},

		{LocalMax, `/Meta1/""`}, // LocalMax == Meta1Prefix

		// system
		{makeKey(Meta2Prefix, roachpb.Key("foo")), `/Meta2/"foo"`},
		{makeKey(Meta1Prefix, roachpb.Key("foo")), `/Meta1/"foo"`},
		{RangeMetaKey(roachpb.RKey("f")), `/Meta2/"f"`},

		{NodeStatusKey(1111), "/System/StatusNode/1111"},

		{SystemMax, "/System/Max"},

		// key of key
		{RangeMetaKey(roachpb.RKey(MakeRangeKeyPrefix(roachpb.RKey("ok")))), `/Meta2/Local/Range/"ok"`},
		{RangeMetaKey(roachpb.RKey(makeKey(MakeTablePrefix(42), roachpb.RKey("foo")))), `/Meta2/Table/42/"foo"`},
		{RangeMetaKey(roachpb.RKey(makeKey(Meta2Prefix, roachpb.Key("foo")))), `/Meta1/"foo"`},

		// table
		{UserTableDataMin, "/Table/50"},
		{MakeTablePrefix(111), "/Table/111"},
		{makeKey(MakeTablePrefix(42), roachpb.RKey("foo")), `/Table/42/"foo"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, float64(233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatDescending(nil, float64(-233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.Inf(1)))),
			"/Table/42/+Inf"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.NaN()))),
			"/Table/42/NaN"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222)),
			roachpb.RKey(encoding.EncodeStringAscending(nil, "handsome man"))),
			`/Table/42/1222/"handsome man"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222))),
			`/Table/42/1222`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintDescending(nil, 1222))),
			`/Table/42/-1223`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255}))),
			`/Table/42/"\x01\x02\b\xff"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesDescending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNullAscending(nil))), "/Table/42/NULL"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNotNullAscending(nil))), "/Table/42/#"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeAscending(nil, tm))),
			"/Table/42/2016-03-30T13:40:35.053725008Z"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeDescending(nil, tm))),
//.........这里部分代码省略.........
开发者ID:CubeLite，项目名称:cockroach，代码行数:101，代码来源:printer_test.go


注：本文中的github.com/cockroachdb/cockroach/util/encoding.EncodeFloatAscending函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。