sayoi7799/moon_vegalite/value

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Value

pub(all) enum Value {
  Undef
  Null
  Bool(Bool)
  Num(Double)
  Str(String)
  Arr(Array[Value])
  Obj(Map[String, Value])
}

Value::coerce_boolean

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fn Value::coerce_boolean(self : Value) -> Value

vega-util toBoolean.

Value::coerce_date

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fn Value::coerce_date(self : Value) -> Value

vega-util toDate with the default parser: numbers pass through, strings go through Date.parse (NaN when unparsable).

Value::coerce_number

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fn Value::coerce_number(self : Value) -> Value

vega-util toNumber: null for null / "", else +v.

Value::coerce_string

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fn Value::coerce_string(self : Value) -> Value

vega-util toString: null for null / "", else v + "".

Value::is_valid

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fn Value::is_valid(self : Value) -> Bool

vega-lite / vega isValid: not null and not NaN.

Value::to_js_string

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fn Value::to_js_string(self : Value) -> String

String(value).

Value::to_number

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fn Value::to_number(self : Value) -> Double

+value: JavaScript's unary plus on a cell value.

Value::truthy

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fn Value::truthy(self : Value) -> Bool

JavaScript truthiness.

compare_values

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fn compare_values(u : Value, v : Value) -> Int

vega-util ascending: nulls first, then natural order; NaN after numbers.

from_json

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fn from_json(j : Json) -> Value

Convert JSON to a Value: objects keep their key order, numbers become doubles, true / false / null map to the matching variants.

get_field

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fn get_field(row : Map[String, Value], path : String) -> Value

Read a (possibly nested) field of a row; Undef when any step is missing.

parse_date

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fn parse_date(text : String) -> Double

JavaScript's Date.parse(text): epoch milliseconds, or NaN for an unrecognised string.

split_access_path

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fn split_access_path(path : String) -> Array[String]

Split an access path into its property names.

string_to_number

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fn string_to_number(s : String) -> Double

JavaScript's Number(string) (ToNumber applied to a String).

trim_js

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fn trim_js(s : String) -> String

Source Files

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#Value

#Value::coerce_boolean

#Value::coerce_date

#Value::coerce_number

#Value::coerce_string

#Value::is_valid

#Value::to_js_string

#Value::to_number

#Value::truthy

#compare_values

#from_json

#get_field

#parse_date

#split_access_path

#string_to_number

#trim_js

Source Files

Value

Value::coerce_boolean

Value::coerce_date

Value::coerce_number

Value::coerce_string

Value::is_valid

Value::to_js_string

Value::to_number

Value::truthy

compare_values

from_json

get_field

parse_date

split_access_path

string_to_number

trim_js