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RustAst/examples/object_records.myc
T
Michael Schimmel f7cb6655af feat: Specialize pipeline types for performance
Introduces type specialization for reactive pipeline nodes and their
data buffers. This eliminates the overhead of generic `Value` enums and
`SharedValueSeries` when dealing with known scalar or record types.

The architecture shifts buffer instantiation from the VM to the runtime
(RTL), leveraging type information from the AST. A new `out_type` field
is added to `BoundKind::Pipe` to store the static type of the pipeline's
output, determined by the type checker.

This enables the creation of specialized `RingBuffer<T>` and
`SharedRecordSeries` (for Struct-of-Arrays layout) when the output type
is known, significantly improving memory usage and processing speed for
time-series data, especially in financial analysis.
2026-03-02 22:03:24 +01:00

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;; Benchmark: 1.6us
;; Benchmark-Repeat: 1233
;; Output: [150 130 "Insufficient funds" 130]
; ---------------------------------------------------------
; Object-Oriented Records Example
; ---------------------------------------------------------
; This showcase treats a record as an object by storing
; closures that capture private state.
(do
; A factory function (Constructor) for a BankAccount object
(def make-account (fn [initial-balance]
(do
; 'balance' is a captured parameter, acting as private state
(def balance initial-balance)
{
; Method: Get current balance
:balance (fn [] balance)
; Method: Deposit money
:deposit (fn [amount]
(assign balance (+ balance amount)))
; Method: Withdraw money with validation
:withdraw (fn [amount]
(if (>= balance amount)
(assign balance (- balance amount))
"Insufficient funds"))
}
)))
; 1. Create an instance
(def my-acc (make-account 100))
; 2. Call 'deposit' method
; Note the double parens: (.deposit my-acc) gets the function, then we call it
(def b1 ((.deposit my-acc) 50)) ; balance is now 150
; 3. Call 'withdraw' method
(def b2 ((.withdraw my-acc) 20)) ; balance is now 130
; 4. Call 'withdraw' with invalid amount
(def error-msg ((.withdraw my-acc) 1000))
; 5. Call 'balance' getter
(def final-balance ((.balance my-acc)))
; Return summary of operations
[b1 b2 error-msg final-balance]
)