First Sample Contract Template

// ContractTemplate.cdc

access(all) contract ContractTemplate {

    // constants
    pub let nameConstant: String

    //Arrays
    pub var nameArray: [String]
    pub var beerArray: [Beer]
    pub var location: Int

    ///Dictionaries
    pub var nameNumberDictionary: {String : Int}

    ///Structs
    pub struct Beer {
        pub var beername: String
        pub var style: String
        pub var abv: UFix64
        pub var ibu: UFix64

        init(_beername: String, _style: String, _abv: UFix64, _ibu: UFix64){
            self.beername = _beername
            self.style = _style
            self.abv = _abv
            self.ibu = _ibu
        }
    }

    pub var spikesCornersIPA: Beer

    // The init() function is required if the contract contains any fields.
    init() {
        self.nameConstant = "My name is Slim Shady Constant"
        self.nameArray = ["Init", "Init2"]
        self.beerArray = []
        self.nameNumberDictionary = {"One": 1}
        self.location = 0
        self.spikesCornersIPA = Beer(_beername: "Spikes Corners IPA", _style: "IPA", _abv: 6.2, _ibu: 55.0)
    }

    // Public function that returns our constant name!
    pub fun getNameConstant(): String {
        return self.nameConstant
    }

    ///
    /// ARRAYS
    ///
    pub fun addName(name: String) {
        self.nameArray.append(name)
    }
    pub fun AddNameAt(name: String, location: Int){
        self.nameArray.insert(at: location, name)
    }
    pub fun getNameArray(): [String] {
        return self.nameArray
    }
    pub fun getNameArrayLength(): Int{
        return self.nameArray.length
    }
    pub fun removeName(name: String){
       /// self.nameArray.remove()
       self.location = self.findName(name: name)
       if self.location != -1{
            self.nameArray.remove(at: self.location)
       }
    }
    pub fun findName(name: String): Int{
        self.location = 0
        for x in self.nameArray {
            if x == name{
                return self.location
            }
            self.location = self.location + 1
        }
        return -1
    }

    ///
    /// Dictionaries
    /// self.nameNumberDictionary.Keys  -> returns an array of keys
    /// self.nameNumberDictionary.Values -> returns array of values
    ///
    pub fun addNameNumber(name: String, number: Int) {

       /// pre {
       ///     self.nameNumberDictionary.containsKey(name): "This Name Does Not Exist"
       ///  }
        self.nameNumberDictionary[name] = number
    }
    pub fun removeNameNumber(name: String){
        self.nameNumberDictionary.remove(key: name)
    }
    pub fun getNameNumberDict(): {String : Int} {
        return self.nameNumberDictionary
    }
    pub fun getNameNumberDictLength(): Int{
        return self.nameNumberDictionary.length
    }


    ///Structs
    pub fun addBeer(_beerName: String, _beerStyle: String, _abv: UFix64, _ibu: UFix64)
    {   
        self.beerArray.append(Beer(_beername: _beerName, _style: _beerStyle, _abv: _abv, _ibu: _ibu))
    }
    pub fun getBeerArray(): [Beer]{
        return self.beerArray
    }
}