HACD Testnet - Contract Deploy & Test

Contract Code Editor

use pragma 0.1.0

contract MyContract {
    const COUNTER_KEY = "counter"

// storage: persistent state between transactions
    function external ircode increment() -> u64 {
        var v = storage_load(COUNTER_KEY)
        if v is nil {
            storage_save(COUNTER_KEY, 1)
            return 1
        }
        var n = v as u64
        n += 1
        storage_save(COUNTER_KEY, n)
        return n
    }

function external ircode get_counter() -> u64 {
        var v = storage_load(COUNTER_KEY)
        if v is nil {
            return 0
        }
        return v as u64
    }

// memory: contract-local, transaction lifetime
    function external ircode memory_set(v: u64) -> u64 {
        memory_put(0, v)
        return v
    }

function external ircode memory_get_value() -> u64 {
        var v = memory_get(0)
        if v is nil {
            return 0
        }
        return v as u64
    }

// global: transaction-wide scope
    function external ircode global_set(v: u64) -> u64 {
        global_put(1, v)
        return v
    }

function external ircode global_get_value() -> u64 {
        var v = global_get(1)
        if v is nil {
            return 0
        }
        return v as u64
    }

// heap: raw byte memory for current function call
    function external ircode heap_demo() -> u64 {
        heap_grow(1)
        heap_write(0, "abcd")
        var data = heap_read(0, 4)
        if size(data) == 4 {
            return 1
        }
        return 0
    }

function external ircode add(a: u64, b: u64) -> u64 {
        return a + b
    }
}

Account Information

Account Address

Deploy Nonce (Random)

Balance

HAC: - SAT: - HACD: -

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Deploy Result

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Contract Testing

Contract Address

Function Name

Arguments (comma separated)

Contract Address

Function Name

Arguments (comma separated)

Tip: default numeric args are parsed as u64. You can also pass typed args like 100:u32.

Maincall Assert (optional)

Uses variable r (the function return value). If provided, maincall runs assert ... then returns 0.

Gas Max

gas units

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Contract Testing