Purchases.configure(withAPIKey: "my_api_key")

[RCPurchases configureWithAPIKey:@"my_api_key"];

Purchases.configure(PurchasesConfiguration.Builder(this, "api_key").build())

Purchases.configure(new PurchasesConfiguration.Builder(context, "api_key").build());

await Purchases.configure(PurchasesConfiguration("public_sdk_key"));

Purchases.setup("public_sdk_key");

Purchases.setup("public_sdk_key");

// The SDK can be configured through the Unity Editor. 
// See Unity installation instructions https://docs.revenuecat.com/docs/unity

// If you'd like to do it programmatically instead, 
// make sure to check "Use runtime setup" in the Editor and then: 

Purchases.PurchasesConfiguration.Builder builder = Purchases.PurchasesConfiguration.Builder.Init("api_key");
Purchases.PurchasesConfiguration purchasesConfiguration = builder.Build();
purchases.Configure(purchasesConfiguration);

Purchases.configure(withAPIKey: "my_api_key", appUserID: "my_app_user_id")

[RCPurchases configureWithAPIKey:@"my_api_key" appUserID:@"my_app_user_id"];

Purchases.configure(PurchasesConfiguration.Builder(this, "api_key").appUserID("my_app_user_id").build())

Purchases.configure(new PurchasesConfiguration.Builder(context, "api_key").appUserID("my_app_user_id").build());

await Purchases.configure(
    PurchasesConfiguration("public_sdk_key")
      ..appUserID = "my_app_user_id"
);

Purchases.setup("public_sdk_key", "my_app_user_id");

Purchases.setup("public_sdk_key", "my_app_user_id");

// The appUserID can be set through the Unity Editor. 
// See Unity installation instructions https://docs.revenuecat.com/docs/unity

// If you'd like to do it programmatically instead, 
// make sure to check "Use runtime setup" in the Editor and then: 

Purchases.PurchasesConfiguration.Builder builder = Purchases.PurchasesConfiguration.Builder.Init("api_key");
Purchases.PurchasesConfiguration purchasesConfiguration =
    builder.SetUserDefaultsSuiteName("user_default")
    .SetDangerousSettings(new Purchases.DangerousSettings(false))
    .SetObserverMode(true)
    .SetUseAmazon(false)
    .SetAppUserId(appUserId)
    .Build();
purchases.Configure(purchasesConfiguration);

// Configure Purchases on app launch
Purchases.configure(withAPIKey: "my_api_key")

//...

// Later log in provided user Id
Purchases.shared.logIn("my_app_user_id") { (customerInfo, created, error) in
    // customerInfo updated for my_app_user_id
}

// Configure Purchases on app launch
[RCPurchases configureWithAPIKey:@"my_api_key"];

//...

// Later log in provided user Id
[[RCPurchases sharedPurchases] logIn:@"my_app_user_id" completion:^(RCCustomerInfo *customerInfo, BOOL created, NSError *error) {
    // purchaserInfo updated for my_app_user_id
}];

// Configure Purchases on app launch
Purchases.configure(PurchasesConfiguration.Builder(this, "api_key").build())
  
//...

// Later log in provided user Id
Purchases.sharedInstance.loginWith("my_app_user_id", ::showError) { customerInfo, created ->
  // customerInfo updated for my_app_user_id
}

// Configure Purchases on app launch
Purchases.configure(new PurchasesConfiguration.Builder(context, "api_key").build());

//...

// Later log in provided user Id
Purchases.getSharedInstance().logIn("my_app_user_id", new LogInCallback() {
    @Override
    public void onReceived(@NotNull CustomerInfo customerInfo, boolean created) {
        // customerInfo updated for my_app_user_id
    }
  
  @Override
  public void onError(@NotNull PurchasesError error) {

  }
});

// Configure Purchases on app launch
await Purchases.configure(PurchasesConfiguration("public_sdk_key"));

//...

// Later log in provided user Id
LogInResult result = await Purchases.logIn("my_app_user_id");

// Configure Purchases on app launch
Purchases.setup("public_sdk_key");

//...

// Later log in provided user Id
const { purchaserInfo, created } = await Purchases.logIn("my_app_user_id");
// purchaserInfo updated for my_app_user_id

// Configure Purchases on app launch
Purchases.setup("public_sdk_key");

//...

// Later log in provided user Id

Purchases.logIn(
  "my_app_user_id", 
  ({ purchaserInfo, created }) => {
    // purchaserInfo updated for my_app_user_id
  },
  error => {
  }
);

// configure the SDK either through the Editor or through 
// programmatic setup (see section above), then:


var purchases = GetComponent<Purchases>();
purchases.LogIn("myAppUserUD", (customerInfo, created, error) =>
{
    if (error != null)
    {
        // show error
    }
    else
    {
        // show customerInfo
    }
});