Cannot force unwrap non-optional value of rateValue in the "master" version

hatimmakki commented 2 years ago

when using the version of the master branch, and applying the demo code in the Readme, it raise error.

Description

Expected Behavior

It should show the chart as mentioned in the docs

Actual Behavior

error

cannot force unwrap value of non-optional type 'Int'

----------------------------------------

SchemeBuildError: Failed to build the scheme "ExpenseTracker"

cannot force unwrap value of non-optional type 'Int'

Compile LineChartView.swift (x86_64):
/Users/hatim.hoho/Library/Developer/Xcode/DerivedData/ExpenseTracker-hadicoqkbmqusxgevqqrsdohtnpk/SourcePackages/checkouts/ChartView/Sources/SwiftUICharts/LineChart/LineChartView.swift:84:50: error: cannot force unwrap value of non-optional type 'Int'
                                Text("\(rateValue!)%")
                                        ~~~~~~~~~^

/Users/hatim.hoho/Library/Developer/Xcode/DerivedData/ExpenseTracker-hadicoqkbmqusxgevqqrsdohtnpk/SourcePackages/checkouts/ChartView/Sources/SwiftUICharts/LineChart/LineChartView.swift:79:47: warning: left side of nil coalescing operator '??' has non-optional type 'Int', so the right side is never used
                                if (rateValue ?? 0 >= 0){
                                    ~~~~~~~~~ ^~~~~

/Users/hatim.hoho/Library/Developer/Xcode/DerivedData/ExpenseTracker-hadicoqkbmqusxgevqqrsdohtnpk/SourcePackages/checkouts/ChartView/Sources/SwiftUICharts/LineChart/LineChartView.swift:145:97: error: missing argument for parameter 'rateValue' in call
            LineChartView(data: [8,23,54,32,12,37,7,23,43], title: "Line chart", legend: "Basic")
                                                                                                ^
                                                                                                , rateValue: <#Int?#>
/Users/hatim.hoho/Library/Developer/Xcode/DerivedData/ExpenseTracker-hadicoqkbmqusxgevqqrsdohtnpk/SourcePackages/checkouts/ChartView/Sources/SwiftUICharts/LineChart/LineChartView.swift:36:12: note: 'init(data:title:legend:style:form:rateValue:dropShadow:valueSpecifier:)' declared here
    public init(data: [Double],
           ^
/Users/hatim.hoho/Library/Developer/Xcode/DerivedData/ExpenseTracker-hadicoqkbmqusxgevqqrsdohtnpk/SourcePackages/checkouts/ChartView/Sources/SwiftUICharts/LineChart/LineChartView.swift:148:213: error: missing argument for parameter 'rateValue' in call
            LineChartView(data: [282.502, 284.495, 283.51, 285.019, 285.197, 286.118, 288.737, 288.455, 289.391, 287.691, 285.878, 286.46, 286.252, 284.652, 284.129, 284.188], title: "Line chart", legend: "Basic")
                                                                                                                                                                                                                    ^
                                                                                                                                                                                                                    , rateValue: <#Int?#>
/Users/hatim.hoho/Library/Developer/Xcode/DerivedData/ExpenseTracker-hadicoqkbmqusxgevqqrsdohtnpk/SourcePackages/checkouts/ChartView/Sources/SwiftUICharts/LineChart/LineChartView.swift:36:12: note: 'init(data:title:legend:style:form:rateValue:dropShadow:valueSpecifier:)' declared here
    public init(data: [Double],
           ^

Possible Fix

use guard before the line where rateValue! is used

Steps to Reproduce

import the package, choose branch master
paste this code in the view

                        MultiLineChartView(data: [([8,32,11,23,40,28], GradientColors.green), ([90,99,78,111,70,60,77], GradientColors.purple), ([34,56,72,38,43,100,50], GradientColors.orngPink)], title: "Title")