Built-in functions

This reference lists functions in the standard QuantFlow registry. A host may register additional functions; those are host-specific and are not language built-ins.

`math`

math.abs, math.min, math.max, math.to_integer, math.to_decimal, math.decimal_places_to_step, math.negate, math.round, math.floor, math.ceil, math.modulo, and math.clamp.

math.abs(value) returns the absolute decimal value.
math.min(value, ...) and math.max(value, ...) take one or more decimals.
math.to_integer(value) accepts a decimal or decimal text and errors unless the value is a whole number.
math.to_decimal(value) converts a decimal or decimal text to a decimal.
math.decimal_places_to_step(places) takes an integer from 0 through 28 and returns the corresponding step as text.
math.negate(value), math.round(value), math.floor(value), and math.ceil(value) each take one decimal.
math.modulo(dividend, divisor) takes two decimals and rejects a zero divisor.
math.clamp(value, minimum, maximum) takes three decimals and errors when minimum is greater than maximum.

`str`

str.to_text, str.lower_ascii, str.trim, str.concat, str.upper, str.lower, str.capitalize, str.strip, str.lstrip, str.rstrip, str.replace, str.split, str.join, str.startswith, str.endswith, str.contains, str.find, str.len, and str.is_empty.

str.to_text(value), str.lower_ascii(value), and str.trim(value) take a string, decimal, or boolean.
str.concat(value, ...) joins zero or more scalar values as text.
str.upper(value), str.lower(value), str.capitalize(value), str.len(value), and str.is_empty(value) each take one string.
str.strip(value[, characters]), str.lstrip(value[, characters]), and str.rstrip(value[, characters]) remove whitespace by default. When characters is provided, each removes any character in that set.
str.replace(value, old, new) replaces all occurrences. Its three values may be strings, decimals, or booleans.
str.split(value[, separator]) returns an array of strings. An omitted or null separator splits on whitespace; an empty separator is an error.
str.join(separator, values) joins an array of strings.
str.startswith(value, prefix), str.endswith(value, suffix), and str.contains(value, part) return booleans.
str.find(value, part) returns a zero-based character index or -1.

`array`

array.new, array.find, array.filter, and array.first_field.

array.new(value, ...) returns an array containing its arguments.
array.find(items, field, expected, ...) returns the first item whose field paths match every expected value, or null if no item matches.
array.filter(items, field, expected, ...) returns all items matching every field/value pair.
array.first_field(items, field) returns the named field from the first item, or null if it is missing.

For array.find and array.filter, provide one or more field/value pairs. Field paths may be dotted, such as state.side; matches use exact value equality.

`object`

object.get, object.set, and object.values.

object.get(value, key) returns the value for a key, or null when absent.
object.set(value, key, new_value) returns a copy with that key set.
object.values(value) returns an array of the object’s values.

`boolean`

boolean.to_boolean(value) accepts a boolean or the strings true and false (case-insensitive, surrounding whitespace ignored).

`datetime`

datetime.now, datetime.to_millis, and datetime.to_timestamp.

datetime.now() returns the current UTC time as milliseconds since the Unix epoch.
datetime.to_millis(value) accepts RFC3339 text and returns milliseconds since the Unix epoch.
datetime.to_timestamp(value[, format]) accepts RFC3339 text or a whole millisecond timestamp. An optional format accepts Chrono/strftime syntax; rfc3339 and rfc3339_millis select RFC3339 output.

`symbol`

symbol.key, symbol.provider, symbol.exchange_symbol, and symbol.instrument_type.

These are legacy format-conversion helpers. symbol.key trims and lowercases its three inputs; the extraction helpers normalize case as well. Provider codes and symbol keys are opaque identifiers in the trading system, so do not use these helpers to prepare values for API calls, matching, persistence, or display. Pass the original identifier through unchanged.