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Candles

Retrieve historical price candles for any supported stock symbol.

Making Requests​

Use FundCandlesRequest to make requests to the endpoint using any of the three supported execution methods:

MethodExecutionReturn TypeDescription
GetDirect[]CandleDirectly returns a slice of []Candle, facilitating individual access to each candle.
PackedIntermediate*FundCandlesResponseReturns a packed *FundCandlesResponse object. Must be unpacked to access the []Candle slice.
RawLow-level*resty.ResponseProvides the raw *resty.Response for maximum flexibility. Direct access to raw JSON or *http.Response.

FundCandlesRequest​

type FundCandlesRequest struct {
    // contains filtered or unexported fields
}

FundCandlesRequest represents a request to the /v1/funds/candles/ endpoint. It encapsulates parameters for resolution, symbol, date, and additional stock-specific parameters to be used in the request. This struct provides methods such as Resolution(), Symbol(), Date(), From(), To(), Countback(), AdjustSplits(), AdjustDividends(), Extended(), and Exchange() to set these parameters respectively.

Generated By​

Setter Methods​

Execution Methods​

These methods are used to send the request in different formats or retrieve the data. They handle the actual communication with the API endpoint.

fcr, err := FundCandles().Resolution("D").Symbol("VFINX").From("2023-01-01").To("2023-01-06").Get()
if err != nil {
	fmt.Print(err)
	return
}

for _, candle := range fcr {
	fmt.Println(candle)
}

Output​

Candle{Date: 2023-01-03, Open: 352.76, High: 352.76, Low: 352.76, Close: 352.76}
Candle{Date: 2023-01-04, Open: 355.43, High: 355.43, Low: 355.43, Close: 355.43}
Candle{Date: 2023-01-05, Open: 351.35, High: 351.35, Low: 351.35, Close: 351.35}
Candle{Date: 2023-01-06, Open: 359.38, High: 359.38, Low: 359.38, Close: 359.38}

FundCandles​

func FundCandles() *FundCandlesRequest

FundCandles initializes a new FundCandlesRequest with default parameters. This function prepares a request to fetch stock candle data. It sets up all necessary parameters and configurations to make the request ready to be sent.

Returns​

  • *FundCandlesRequest

    A pointer to the newly created FundCandlesRequest instance. This instance contains all the necessary parameters set to their default values and is ready to have additional parameters set or to be sent.

FundCandlesRequest Setter Methods​

AdjustSplits​

func (fcr *FundCandlesRequest) AdjustSplits(q bool) *FundCandlesRequest

AdjustSplits sets the adjust splits parameter for the FundCandlesRequest. This method indicates whether the returned data should be adjusted for stock splits.

Parameters​

  • bool

    Whether to adjust for splits.

Returns​

  • *FundCandlesRequest

    This method returns a pointer to the *FundCandlesRequest instance it was called on. This allows for method chaining.

Countback​

func (fcr *FundCandlesRequest) Countback(q int) *FundCandlesRequest

Countback sets the countback parameter for the FundCandlesRequest. This method specifies the number of candles to return, counting backwards from the 'to' date.

Parameters​

  • int

    The number of candles to return.

Returns​

  • *FundCandlesRequest

    This method returns a pointer to the *FundCandlesRequest instance it was called on. This allows for method chaining.

Date​

func (fcr *FundCandlesRequest) Date(q interface{}) *FundCandlesRequest

Date sets the date parameter for the FundCandlesRequest. This method is used to specify the date for which the stock candle data is requested.

Parameters​

  • interface{}

    An interface{} representing the date to be set. It can be a string, a time.Time object, a Unix timestamp as an int, or any other type that the underlying dates package method can process.

Returns​

  • *FundCandlesRequest

    This method returns a pointer to the *FundCandlesRequest instance it was called on. This allows for method chaining.

From​

func (fcr *FundCandlesRequest) From(q interface{}) *FundCandlesRequest

From sets the 'from' date parameter for the FundCandlesRequest. This method is used to specify the starting point of the date range for which the stock candle data is requested.

Parameters​

  • interface{}

    An interface{} representing the date to be set. It can be a string, a time.Time object, a Unix timestamp as an int, or any other type that the underlying dates package method can process.

Returns​

  • *FundCandlesRequest

    This method returns a pointer to the *FundCandlesRequest instance it was called on. This allows for method chaining.

Resolution​

func (cr *FundCandlesRequest) Resolution(q string) *FundCandlesRequest

Resolution sets the resolution parameter for the FundCandlesRequest. This method is used to specify the granularity of the candle data to be retrieved.

Parameters​

  • string

    A string representing the resolution to be set.

Returns​

  • *FundCandlesRequest

    This method returns a pointer to the *FundCandlesRequest instance it was called on. This allows for method chaining.

Symbol​

func (fcr *FundCandlesRequest) Symbol(q string) *FundCandlesRequest

Symbol sets the symbol parameter for the FundCandlesRequest. This method is used to specify the stock symbol for which candle data is requested.

Parameters​

  • string

    A string representing the stock symbol to be set.

Returns​

  • *FundCandlesRequest

    This method returns a pointer to the *FundCandlesRequest instance it was called on. This allows for method chaining.

To​

func (fcr *FundCandlesRequest) To(q interface{}) *FundCandlesRequest

To sets the 'to' date parameter for the FundCandlesRequest. This method is used to specify the ending point of the date range for which the stock candle data is requested.

Parameters​

  • interface{}

    An interface{} representing the date to be set. It can be a string, a time.Time object, a Unix timestamp as an int, or any other type that the underlying dates package method can process.

Returns​

  • *FundCandlesRequest

    This method returns a pointer to the *FundCandlesRequest instance it was called on

FundCandlesRequest Execution Methods​

Get​

func (fcr *FundCandlesRequest) Get() ([]models.Candle, error)

Get sends the FundCandlesRequest, unpacks the FundCandlesResponse, and returns a slice of StockCandle. It returns an error if the request or unpacking fails.

Returns​

  • []Candle

    A slice of []Candle containing the unpacked candle data from the response.

  • error

    An error object that indicates a failure in sending the request or unpacking the response.

Packed​

func (fcr *FundCandlesRequest) Packed() (*models.FundCandlesResponse, error)

Packed sends the FundCandlesRequest and returns the FundCandlesResponse. // # Returns

  • *FundCandlesResponse: A pointer to the FundCandlesResponse obtained from the request.
  • error: An error object that indicates a failure in sending the request.

Raw​

func (fcr *FundCandlesRequest) Raw() (*resty.Response, error)

Raw executes the FundCandlesRequest and returns the raw *resty.Response. This method returns the raw JSON or *http.Response for further processing without accepting an alternative MarketDataClient.

Returns​

  • *resty.Response

    The raw HTTP response from the executed request.

  • error

    An error object if the request fails due to execution errors.

FundCandlesResponse​

type FundCandlesResponse struct {
    Date  []int64   `json:"t"` // Date holds UNIX timestamps for each candle.
    Open  []float64 `json:"o"` // Open holds the opening prices for each candle.
    High  []float64 `json:"h"` // High holds the highest prices reached in each candle.
    Low   []float64 `json:"l"` // Low holds the lowest prices reached in each candle.
    Close []float64 `json:"c"` // Close holds the closing prices for each candle.
}

FundCandlesResponse encapsulates the data structure for the JSON response of mutual fund candles data. It includes detailed information about fund prices at different times, such as opening, closing, highest, and lowest prices, along with the trading volume. For version 2 candles, it optionally includes the Volume Weighted Average Price (VWAP) and the number of trades.

Generated By​

Methods​

Notes​

  • The optional fields VWAP and N are only available for version 2 candles.
  • The Date field uses UNIX timestamps to represent the date and time of each candle.

CombineFundCandles​

func CombineFundCandles(f1, f2 *FundCandlesResponse) (*FundCandlesResponse, error)

CombineFundCandles merges two FundCandlesResponse structs into a single one. It checks if the versions of the two structs are the same, ensures there is no time overlap between them, and then combines their data into a new FundCandlesResponse struct. If the versions do not match or there is a time overlap, it returns an error.

Parameters​

  • *FundCandlesResponse

    The first FundCandlesResponse struct to be combined.

  • *FundCandlesResponse

    The second FundCandlesResponse struct to be combined.

Returns​

  • *FundCandlesResponse

    A pointer to the newly combined FundCandlesResponse struct.

  • error

    An error if the versions do not match, there is a time overlap, or the combined struct fails validation.

GetDateRange​

func (f *FundCandlesResponse) GetDateRange() (dates.DateRange, error)

GetDateRange calculates and returns the date range covered by the FundCandlesResponse. This method is useful for determining the span of time that the mutual fund candle data encompasses, allowing users to understand the temporal scope of the data they are working with.

Returns​

  • dates.DateRange

    The range of dates covered by the FundCandlesResponse.

  • error

    An error if calculating the date range fails.

Notes​

  • This method is particularly useful when filtering data based on specific time frames.

IsValid​

func (f *FundCandlesResponse) IsValid() bool

IsValid determines the validity of a FundCandlesResponse. It is primarily used to ensure that the data within the response adheres to expected formats and logical constraints before further processing or analysis.

Returns​

  • bool

    Indicates whether the FundCandlesResponse is valid.

Notes​

  • This method should be used to prevent the propagation of invalid or corrupt data within applications that rely on mutual fund candle information.

MarshalJSON​

func (f *FundCandlesResponse) MarshalJSON() ([]byte, error)

MarshalJSON converts a FundCandlesResponse instance into its JSON representation. This method is primarily used for encoding the FundCandlesResponse into a JSON format that can be easily transmitted or stored. It organizes the mutual fund candle data into a structured JSON format, ensuring compatibility with systems that consume JSON.

Returns​

  • []byte

    The JSON-encoded representation of the FundCandlesResponse.

  • error

    An error object that will be non-nil if the marshaling process encounters any issues.

PruneOutsideDateRange​

func (f *FundCandlesResponse) PruneOutsideDateRange(dr dates.DateRange) error

PruneOutsideDateRange method is used to filter out data points from a FundCandlesResponse that fall outside a specified date range. This method is essential when the user needs to focus on analyzing fund candle data within a specific period, thereby excluding irrelevant data points that do not fall within the desired date range.

Parameters​

  • dr dates.DateRange

    A struct specifying the start and end dates for the range within which data points should be retained.

Returns​

  • error

    An error if pruning fails, otherwise nil.

Notes​

  • This method modifies the FundCandlesResponse in place, removing any data points that are outside the specified date range.

String​

func (f *FundCandlesResponse) String() string

String generates a string representation of a FundCandlesResponse. This method is primarily used for logging or debugging purposes, allowing developers to easily view the contents of a FundCandlesResponse in a human-readable format.

Returns​

  • string

    A string representation of the FundCandlesResponse.

Notes​

  • Mutual fund candles do not include Volume, VWAP, or transaction quantities (n).

UnmarshalJSON​

func (f *FundCandlesResponse) UnmarshalJSON(data []byte) error

UnmarshalJSON converts JSON data into a FundCandlesResponse instance. This method is essential for decoding JSON data received from external sources into a structured FundCandlesResponse object. It facilitates the easy consumption of JSON data by converting it into a more manageable Go struct. Additionally, it performs validation on the unmarshalled data to ensure it meets the expected format and constraints of a FundCandlesResponse.

Parameters​

  • []byte

    The JSON-encoded data that needs to be converted into a FundCandlesResponse.

Returns​

  • error

    An error object that will be non-nil if the unmarshaling process encounters any issues or if the validation of the unmarshalled data fails.

Notes​

  • This method leverages an auxiliary struct to prevent infinite recursion during the unmarshalling process.

Unpack​

func (fcr *FundCandlesResponse) Unpack() ([]Candle, error)

Unpack converts a FundCandlesResponse into a slice of Candle. This method is primarily used to transform the aggregated mutual fund candles data from a structured response format into a more accessible slice of individual candle data. It allows users to iterate over or manipulate the mutual fund candle data more conveniently in their applications.

Returns​

  • []Candle

    A slice of Candle containing the unpacked data from the FundCandlesResponse.

  • error

    An error if the slices within FundCandlesResponse are not of equal length, indicating inconsistent data.

Notes​

  • This method ensures that all slices within the FundCandlesResponse have the same length before unpacking to prevent data misalignment.

Validate​

func (f *FundCandlesResponse) Validate() error

Validate checks the integrity and consistency of a FundCandlesResponse. It ensures that the data within the response adheres to expected formats and logical constraints, such as time being in ascending order and all data slices being of equal length. This method is crucial for preventing the propagation of invalid or corrupt data within an application that relies on mutual fund candle information.

Returns​

  • error

    An error if the FundCandlesResponse is not valid. A nil error indicates a valid FundCandlesResponse.

Notes​

  • This method performs multiple checks in parallel to efficiently validate the response.

Candle​

type Candle struct {
    Symbol string    `json:"symbol,omitempty"` // The symbol of the candle.
    Date   time.Time `json:"t"`                // Date represents the date and time of the candle.
    Open   float64   `json:"o"`                // Open is the opening price of the candle.
    High   float64   `json:"h"`                // High is the highest price reached during the candle's time.
    Low    float64   `json:"l"`                // Low is the lowest price reached during the candle's time.
    Close  float64   `json:"c"`                // Close is the closing price of the candle.
    Volume int64     `json:"v,omitempty"`      // Volume represents the trading volume during the candle's time.
    VWAP   float64   `json:"vwap,omitempty"`   // VWAP is the Volume Weighted Average Price, optional.
    N      int64     `json:"n,omitempty"`      // N is the number of trades that occurred, optional.
}

Candle represents a single candle in a stock candlestick chart, encapsulating the time, open, high, low, close prices, volume, and optionally the symbol, VWAP, and number of trades.

Generated By​

Methods​

Notes​

  • The VWAP, N fields are optional and will only be present in v2 Stock Candles.
  • The Volume field is optional and will not be present in Index Candles.
  • The Symbol field is optional and only be present in candles that were generated using the bulkcandles endpoint.

Clone​

func (c Candle) Clone() Candle

Clones the current Candle instance, creating a new instance with the same values. This method is useful when you need a copy of a Candle instance without modifying the original instance.

Returns​

  • Candle

    A new Candle instance with the same values as the current instance.

Equals​

func (c Candle) Equals(other Candle) bool

Equals compares the current Candle instance with another Candle instance to determine if they represent the same candle data. This method is useful for validating if two Candle instances have identical properties, including symbol, date/time, open, high, low, close prices, volume, VWAP, and number of trades. It's primarily used in scenarios where candle data integrity needs to be verified or when deduplicating candle data.

Parameters​

  • Candle

    The other Candle instance to compare against the current instance.

Returns​

  • bool

    Indicates whether the two Candle instances are identical. True if all properties match, false otherwise.

Notes​

  • This method performs a deep equality check on all Candle properties, including date/time which is compared using the Equal method from the time package to account for potential timezone differences.

IsAfter​

func (c Candle) IsAfter(other Candle) bool

IsAfter determines if the current Candle instance occurred after another specified Candle instance. This method is useful for chronological comparisons between two Candle instances, particularly in time series analysis or when organizing historical financial data in ascending order.

Parameters​

  • Candle

    The other Candle instance to compare with the current Candle instance.

Returns​

  • bool

    Indicates whether the current Candle's date is after the 'other' Candle's date. Returns true if it is; otherwise, false.

IsBefore​

func (c Candle) IsBefore(other Candle) bool

IsBefore determines whether the current Candle instance occurred before another specified Candle instance. This method is primarily used for comparing the dates of two Candle instances to establish their chronological order, which can be useful in time series analysis or when organizing historical financial data.

Parameters​

  • Candle

    The other Candle instance to compare with the current Candle instance.

Returns​

  • bool

    Returns true if the date of the current Candle instance is before the date of the 'other' Candle instance; otherwise, returns false.

Notes​

  • This method only compares the dates of the Candle instances, ignoring other fields such as Open, Close, High, Low, etc.

IsValid​

func (c Candle) IsValid() bool

IsValid evaluates the financial data of a Candle to determine its validity. This method is essential for ensuring that the Candle's data adheres to basic financial integrity rules, making it a critical step before performing further analysis or operations with Candle data. A Candle is deemed valid if its high, open, and close prices are logically consistent with each other and its volume is non-negative.

Returns​

  • bool

    Indicates whether the Candle is valid based on its financial data. Returns true if all validity criteria are met; otherwise, false.

MarshalJSON​

func (c Candle) MarshalJSON() ([]byte, error)

MarshalJSON customizes the JSON output of the Candle struct, primarily used for converting the Candle data into a JSON format that includes the Date as a Unix timestamp instead of the standard time.Time format. This method is particularly useful when the Candle data needs to be serialized into JSON for storage or transmission over networks where a compact and universally understood date format is preferred.

Returns​

  • []byte

    The JSON-encoded representation of the Candle.

  • error

    An error if the JSON marshaling fails.

Notes​

  • The Date field of the Candle is converted to a Unix timestamp to facilitate easier handling of date and time in JSON.

String​

func (c Candle) String() string

String provides a textual representation of the Candle instance. This method is primarily used for logging or debugging purposes, where a developer needs a quick and easy way to view the contents of a Candle instance in a human-readable format.

Returns​

  • string

    A string that represents the Candle instance, including its symbol, date/time, open, high, low, close prices, volume, VWAP, and number of trades, if available.

Notes​

  • The output format is designed to be easily readable, with each field labeled and separated by commas.
  • Fields that are not applicable or not set (e.g., VWAP, N, Volume for Index Candles) are omitted from the output.

UnmarshalJSON​

func (c *Candle) UnmarshalJSON(data []byte) error

UnmarshalJSON customizes the JSON input processing of Candle.

UnmarshalJSON customizes the JSON input processing for the Candle struct, allowing for the Date field to be correctly interpreted from a Unix timestamp (integer) back into a Go time.Time object. This method is essential for deserializing Candle data received in JSON format, where date and time are represented as Unix timestamps, ensuring the Candle struct accurately reflects the original data.

Parameters​

  • data []byte

    The JSON-encoded data that is to be unmarshaled into the Candle struct.

Returns​

  • error

    An error if the JSON unmarshaling fails, nil otherwise.

Notes​

  • The Date field in the JSON is expected to be a Unix timestamp (integer). This method converts it back to a time.Time object, ensuring the Candle struct's Date field is correctly populated.

ByClose​

type ByClose []Candle

ByClose implements sort.Interface for []Candle based on the Close field.

// Create a slice of Candle instances
candles := []Candle{
	{Symbol: "AAPL", Date: time.Now(), Open: 100, High: 105, Low: 95, Close: 102, Volume: 1000},
	{Symbol: "AAPL", Date: time.Now(), Open: 102, High: 106, Low: 98, Close: 104, Volume: 1500},
	{Symbol: "AAPL", Date: time.Now(), Open: 99, High: 103, Low: 97, Close: 100, Volume: 1200},
}

// Sort the candles by their Close value using sort.Sort and ByClose
sort.Sort(ByClose(candles))

// Print the sorted candles to demonstrate the order
for _, candle := range candles {
	fmt.Printf("Close: %v\n", candle.Close)
}

Output​

Close: 100
Close: 102
Close: 104

Len​

func (a ByClose) Len() int

Less​

func (a ByClose) Less(i, j int) bool

Swap​

func (a ByClose) Swap(i, j int)

ByDate​

type ByDate []Candle

ByDate implements sort.Interface for []Candle based on the Date field. This allows for sorting a slice of Candle instances by their Date field in ascending order.

// Assuming the Candle struct has at least a Date field of type time.Time
candles := []Candle{
	{Date: time.Date(2023, 3, 10, 0, 0, 0, 0, time.UTC)},
	{Date: time.Date(2023, 1, 5, 0, 0, 0, 0, time.UTC)},
	{Date: time.Date(2023, 2, 20, 0, 0, 0, 0, time.UTC)},
}

// Sorting the slice of Candle instances by their Date field in ascending order
sort.Sort(ByDate(candles))

// Printing out the sorted dates to demonstrate the order
for _, candle := range candles {
	fmt.Println(candle.Date.Format("2006-01-02"))
}

Output​

2023-01-05
2023-02-20
2023-03-10

Len​

func (a ByDate) Len() int

Less​

func (a ByDate) Less(i, j int) bool

Swap​

func (a ByDate) Swap(i, j int)

ByHigh​

type ByHigh []Candle

ByHigh implements sort.Interface for []Candle based on the High field.

// Assuming the Candle struct has at least a High field of type float64
candles := []Candle{
	{High: 15.2},
	{High: 11.4},
	{High: 13.5},
}

// Sorting the slice of Candle instances by their High field in ascending order
sort.Sort(ByHigh(candles))

// Printing out the sorted High values to demonstrate the order
for _, candle := range candles {
	fmt.Printf("%.1f\n", candle.High)
}

Output​

11.4
13.5
15.2

Len​

func (a ByHigh) Len() int

Less​

func (a ByHigh) Less(i, j int) bool

Swap​

func (a ByHigh) Swap(i, j int)

ByLow​

type ByLow []Candle

ByLow implements sort.Interface for []Candle based on the Low field.

// Assuming the Candle struct has at least a Low field of type float64
candles := []Candle{
	{Low: 5.5},
	{Low: 7.2},
	{Low: 6.3},
}

// Sorting the slice of Candle instances by their Low field in ascending order
sort.Sort(ByLow(candles))

// Printing out the sorted Low values to demonstrate the order
for _, candle := range candles {
	fmt.Printf("%.1f\n", candle.Low)
}

Output​

5.5
6.3
7.2

Len​

func (a ByLow) Len() int

Less​

func (a ByLow) Less(i, j int) bool

Swap​

func (a ByLow) Swap(i, j int)

ByN​

type ByN []Candle

ByN implements sort.Interface for []Candle based on the N field.

// Assuming the Candle struct has at least an N field of type int (or any comparable type)
candles := []Candle{
	{N: 3},
	{N: 1},
	{N: 2},
}

// Sorting the slice of Candle instances by their N field in ascending order
sort.Sort(ByN(candles))

// Printing out the sorted N values to demonstrate the order
for _, candle := range candles {
	fmt.Println(candle.N)
}

Output​

1
2
3

Len​

func (a ByN) Len() int

Less​

func (a ByN) Less(i, j int) bool

Swap​

func (a ByN) Swap(i, j int)

ByOpen​

type ByOpen []Candle

ByOpen implements sort.Interface for []Candle based on the Open field.

// Assuming the Candle struct has at least an Open field of type float64
candles := []Candle{
	{Open: 10.5},
	{Open: 8.2},
	{Open: 9.7},
}

// Sorting the slice of Candle instances by their Open field in ascending order
sort.Sort(ByOpen(candles))

// Printing out the sorted Open values to demonstrate the order
for _, candle := range candles {
	fmt.Printf("%.1f\n", candle.Open)
}

Output​

8.2
9.7
10.5

Len​

func (a ByOpen) Len() int

Less​

func (a ByOpen) Less(i, j int) bool

Swap​

func (a ByOpen) Swap(i, j int)

BySymbol​

type BySymbol []Candle

BySymbol implements sort.Interface for []Candle based on the Symbol field. Candles are sorted in ascending order.

// Create a slice of Candle instances with different symbols
candles := []Candle{
	{Symbol: "MSFT", Date: time.Date(2023, 4, 10, 0, 0, 0, 0, time.UTC), Open: 250.0, High: 255.0, Low: 248.0, Close: 252.0, Volume: 3000},
	{Symbol: "AAPL", Date: time.Date(2023, 4, 10, 0, 0, 0, 0, time.UTC), Open: 150.0, High: 155.0, Low: 149.0, Close: 152.0, Volume: 2000},
	{Symbol: "GOOGL", Date: time.Date(2023, 4, 10, 0, 0, 0, 0, time.UTC), Open: 1200.0, High: 1210.0, Low: 1195.0, Close: 1205.0, Volume: 1000},
}

// Sort the candles by their Symbol using sort.Sort and BySymbol
sort.Sort(BySymbol(candles))

// Print the sorted candles to demonstrate the order
for _, candle := range candles {
	fmt.Printf("Symbol: %s, Close: %.2f\n", candle.Symbol, candle.Close)
}

Output​

Symbol: AAPL, Close: 152.00
Symbol: GOOGL, Close: 1205.00
Symbol: MSFT, Close: 252.00

Len​

func (a BySymbol) Len() int

Less​

func (a BySymbol) Less(i, j int) bool

Swap​

func (a BySymbol) Swap(i, j int)

ByVWAP​

type ByVWAP []Candle

ByVWAP implements sort.Interface for []Candle based on the VWAP field.

// Assuming the Candle struct has at least a VWAP (Volume Weighted Average Price) field of type float64
candles := []Candle{
	{VWAP: 10.5},
	{VWAP: 8.2},
	{VWAP: 9.7},
}

// Sorting the slice of Candle instances by their VWAP field in ascending order
sort.Sort(ByVWAP(candles))

// Printing out the sorted VWAP values to demonstrate the order
for _, candle := range candles {
	fmt.Printf("%.1f\n", candle.VWAP)
}

Output​

8.2
9.7
10.5

Len​

func (a ByVWAP) Len() int

Less​

func (a ByVWAP) Less(i, j int) bool

Swap​

func (a ByVWAP) Swap(i, j int)

ByVolume​

type ByVolume []Candle

ByVolume implements sort.Interface for []Candle based on the Volume field.

// Assuming the Candle struct has at least a Volume field of type int
candles := []Candle{
	{Volume: 300},
	{Volume: 100},
	{Volume: 200},
}

// Sorting the slice of Candle instances by their Volume field in ascending order
sort.Sort(ByVolume(candles))

// Printing out the sorted volumes to demonstrate the order
for _, candle := range candles {
	fmt.Println(candle.Volume)
}

Output​

100
200
300

Len​

func (a ByVolume) Len() int

Less​

func (a ByVolume) Less(i, j int) bool

Swap​

func (a ByVolume) Swap(i, j int)