Make MapVariableStorage concurrent-safe #6

README.md

@@ -32,7 +32,7 @@ commands to the handler.
 
 ## Usage
 
-1. Compile your `.yarn` file. You can probably get the compiled output from a  
+1. Compile your `.yarn` file. You can probably get the compiled output from a
    Unity project, or you can compile without using Unity with a tool like the
    [Yarn Spinner Console](https://github.com/YarnSpinnerTool/YarnSpinner-Console):
 
@@ -75,7 +75,7 @@ commands to the handler.
        return choice, nil
    }
 
-   // ... and also the other methods. 
+   // ... and also the other methods.
    // Alternatively you can embed yarn.FakeDialogueHandler in your handler.
    ```
 
@@ -85,9 +85,9 @@ commands to the handler.
 
    ```go
    package main
-   
+
    import "github.com/DrJosh9000/yarn"
-   
+
    func main() {
        // Load the files (error handling omitted for brevity):
        program, stringTable, _ := yarn.LoadFiles("Example.yarn.yarnc", "Example.yarn.csv", "en-AU")
@@ -99,7 +99,7 @@ commands to the handler.
        vm := &yarn.VirtualMachine{
            Program: program,
            Handler: myHandler,
-           Vars: make(yarn.MapVariableStorage), // or your own VariableStorage implementation
+           Vars:    yarn.NewMapVariableStorage(), // or your own VariableStorage implementation
            FuncMap: yarn.FuncMap{ // this is optional
                "last_value": func(x ...interface{}) interface{} {
                    return x[len(x)-1]
@@ -168,7 +168,7 @@ func (m *MyHandler) setWaiting(w bool) {
 func (m *MyHandler) Line(line yarn.Line) error {
     text, _ := m.stringTable.Render(line)
     m.dialogueDisplay.Show(text)
-    
+
     // Go into waiting-for-player-input state
     m.setWaiting(true)