Configurable Parameters are parameters that are linked to keys in the config.json file. You can edit them either by editing the config.json file directly and reloading, or using [AdvantageScope-3044](https://github.com/FRCTeam3044/AdvantageScope-3044).

If you have a group of configurable parameters, consider a [Configurable Class](Configurable-Classes.md) instead.

## Creating a configurable parameter

Configurable params are created like this:

```java
ConfigurableParameter<Type> = new ConfigurableParameter<Type>(defaultValue,
key, /* The json key */
consumer // (Optional) Setter method of the parameter (e.g. this::updateParam) */
```

> Please avoid using commas (,) in the key name, it can cause issues over the NT interface.

## Using a configurable paramter

To use a configurable parameter, simply call `param.get()`. This will retrieve the value of the parameter. This will **not** retrieve the latest value from the config file, only the value from the most recent reload. You will have to call reload manually or use the NT Interface.

## Full example

```java
// Declaration
ConfigurableParameter<Double> speedLimit = new ConfigurableParameter<Double>(5, "drive/speedLimit");

//...
// Usage
speed = Math.min(speedLimit.get(), speed)
```

### Example with a consumer

```java
// Declaration
ConfigurableParameter<Double> speedLimit = new ConfigurableParameter<Double>(5, "drive/speedLimit", this::setSpeedLimit);

//...
// Consumer
public void setSpeedLimit(double newLimit){
    driveHandler.speedLimit = newLimit;
}
```