Hex to string or integer on map

🚧 Developers Coding Questions
1

I have a map of hex values, it there a easy way to convert them to numbers, I'm currently doing
HexUtils.hexStringToInt(data[9])
But would like to do all the values in the map without having to code each one , [1], [2],[3],etc

2

I think you can do this with the Map function .collectEntries.

Let's say you have the map where both the key and value are strings, like this:

Map myMap = ["orange":"0xAB", "yellow":"0x10"]

To get a new map with the value now in integer, I think you do:

Map newMap = myMap.collectEntries{ key, value -> [ key : HexUtils.hexStringToInt(value)]

See: Collection (Groovy JDK)

3

Its not a map like that its just a list separated with comas

4

Based on how you accessed it in your example, I assume it's an array of hex strings.

You can do something like these. The first is my quick and dirty method. The second is like the one @jvm33 recommended (thanks for the tip!)

def traceRandomCode()
{
    def inputData = ["0xDE", "0xAD", "0xBE", "0xEF"]
    def outputData = []
    
    for(thisIn in inputData)
    {
        outputData.add(hubitat.helper.HexUtils.hexStringToInt(thisIn))
    }
    log.debug "${outputData}"
    
    def outputData2 = inputData.collect() {thisIn -> hubitat.helper.HexUtils.hexStringToInt(thisIn)}
    log.debug "${outputData2}"
}
5

If you have a list and just want to run a transformation on each item in the list you can use collect and do it in one line. Assuming your hex list is called colors you can transform to a new list (in the same order) using:

colors.collect{c -> ​HexUtils.hexStringToInt(c) }​
1 Like
6

And the new list would be.. c ?

7

sorry for leaving that off; you'd just assign the return value to whatever you want. collect returns the transformed data so you'd do something like:

def values = colors.collect{c -> ​HexUtils.hexStringToInt(c)}

​

1 Like
8

Thanks worked like a treat, shame I still can't make any sense of the data coming back

9

What's the bigger picture? What are you trying to do with the data, and what isn't working?

10

I'm trying to decode a tuya zigbee TRV
I've managed to find the setpoint reports but the rest ..