refactor: Bringing the code in line with the linter's suggestions

lib/coingecko_result.dart

@@ -17,7 +17,7 @@ class CoinGeckoResult<T> {
     this.isError = false,
     this.errorMessage,
     this.errorCode,
-  }) {}
+  });
 
   @override
   String toString() {

lib/data/asset_platform.dart

@@ -19,7 +19,7 @@ class AssetPlatform {
       : this.id = Convert.toNotNullableString(json['id'], ''),
         this.chainIdentifier = Convert.toInt(json['chain_identifier']),
         this.name = Convert.toNotNullableString(json['name'], ''),
-        this.shortName = Convert.toNotNullableString(json['shortName'], '') {}
+        this.shortName = Convert.toNotNullableString(json['shortName'], '');
 
   @override
   String toString() {

lib/data/category.dart

@@ -28,8 +28,8 @@ class Category {
         this.marketCapChange24h =
             Convert.toDouble(json['market_cap_change_24h']) ?? 0,
         this.volume24h = Convert.toDouble(json['volume_24h']) ?? 0,
-        this.updatedAt = Convert.toDateTime(json['updated_at']) ??
-            Helpers.defaultDateTime() {}
+        this.updatedAt =
+            Convert.toDateTime(json['updated_at']) ?? Helpers.defaultDateTime();
 
   @override
   String toString() {

lib/data/category_short.dart

@@ -11,7 +11,7 @@ class CategoryShort {
 
   CategoryShort.fromJson(Map<String, dynamic> json)
       : this.id = Convert.toNotNullableString(json['category_id'], ''),
-        this.name = Convert.toNotNullableString(json['name'], '') {}
+        this.name = Convert.toNotNullableString(json['name'], '');
 
   @override
   String toString() {

lib/data/coin.dart

@@ -183,7 +183,7 @@ class Coin {
             : null,
         this.statusUpdates = _parseStatusUpdates(json['status_updates']),
         this.lastUpdated = Convert.toDateTime(json['last_updated']),
-        this.tickers = _parseTickers(json['tickers']) {}
+        this.tickers = _parseTickers(json['tickers']);
 
   @override
   String toString() {

lib/data/coin_community_data.dart

@@ -35,7 +35,7 @@ class CoinCommunityData {
         this.redditAccountsActive48h =
             Convert.toDouble(json['reddit_accounts_active_48h']),
         this.telegramChannelUserCount =
-            Convert.toInt(json['telegram_channel_user_count']) {}
+            Convert.toInt(json['telegram_channel_user_count']);
 
   @override
   String toString() {

lib/data/coin_developer_data.dart

@@ -50,7 +50,7 @@ class CoinDeveloperData {
                 : null,
         this.commitCount4Weeks = Convert.toInt(json['commit_count_4_weeks']),
         this.last4WeeksCommitActivitySeries =
-            Helpers.parseListInt(json['last_4_weeks_commit_activity_series']) {}
+            Helpers.parseListInt(json['last_4_weeks_commit_activity_series']);
 
   @override
   String toString() {

lib/data/coin_developer_data_code_changes.dart

@@ -11,7 +11,7 @@ class CoinDeveloperDataCodeChanges {
 
   CoinDeveloperDataCodeChanges.fromJson(Map<String, dynamic> json)
       : this.additions = Convert.toInt(json['additions']),
-        this.deletions = Convert.toInt(json['deletions']) {}
+        this.deletions = Convert.toInt(json['deletions']);
 
   @override
   String toString() {

lib/data/coin_history.dart

@@ -55,7 +55,7 @@ class CoinHistory {
             : null,
         this.publicInterestStats = json.containsKey('public_interest_stats')
             ? CoinPublicInterestsStats.fromJson(json['public_interest_stats'])
-            : null {}
+            : null;
 
   @override
   String toString() {

lib/data/coin_links.dart

@@ -56,7 +56,7 @@ class CoinLinks {
         this.subredditUrl = Convert.toNullableString(json['subreddit_url']),
         this.reposUrl = json.containsKey('repos_url')
             ? CoinReposUrl.fromJson(json['repos_url'])
-            : null {}
+            : null;
 
   @override
   String toString() {

lib/data/coin_market_data.dart

@@ -96,7 +96,7 @@ class CoinMarketData {
         this.sparkline7d = json.containsKey('sparkline_7d')
             ? MarketSparkline.fromJson(json['sparkline_7d'])
             : null,
-        this.lastUpdated = Convert.toDateTime(json['last_updated']) {}
+        this.lastUpdated = Convert.toDateTime(json['last_updated']);
 
   @override
   String toString() {

lib/data/coin_public_interests_stats.dart

@@ -11,7 +11,7 @@ class CoinPublicInterestsStats {
 
   CoinPublicInterestsStats.fromJson(Map<String, dynamic> json)
       : this.alexaRank = Convert.toInt(json['alexa_rank']),
-        this.bingMatches = Convert.toInt(json['bing_matches']) {}
+        this.bingMatches = Convert.toInt(json['bing_matches']);
 
   @override
   String toString() {

lib/data/coin_repos_url.dart

@@ -10,7 +10,7 @@ class CoinReposUrl {
 
   CoinReposUrl.fromJson(Map<String, dynamic> json)
       : this.github = Helpers.parseListString(json['homepage']),
-        this.bitbucket = Helpers.parseListString(json['bitbucket']) {}
+        this.bitbucket = Helpers.parseListString(json['bitbucket']);
 
   @override
   String toString() {

lib/data/coin_short.dart

@@ -19,7 +19,7 @@ class CoinShort {
       : this.id = Convert.toNotNullableString(json['id'], ''),
         this.symbol = Convert.toNotNullableString(json['symbol'], ''),
         this.name = Convert.toNotNullableString(json['name'], ''),
-        this.platforms = Helpers.parseMapStringString(json['platforms']) {}
+        this.platforms = Helpers.parseMapStringString(json['platforms']);
 
   @override
   String toString() {

lib/data/companies_data.dart

@@ -28,7 +28,7 @@ class CompaniesData {
         this.totalValueUsd = Convert.toDouble(json['total_value_usd']) ?? 0,
         this.marketCapDominance =
             Convert.toDouble(json['market_cap_dominance']) ?? 0,
-        this.companies = _parseCompanies(json['companies']) {}
+        this.companies = _parseCompanies(json['companies']);
 
   @override
   String toString() {

lib/data/company.dart

@@ -34,7 +34,7 @@ class Company {
         this.totalCurrentValueUsd =
             Convert.toDouble(json['total_current_value_usd']) ?? 0,
         this.percentageOfTotalSupply =
-            Convert.toDouble(json['percentage_of_total_supply']) ?? 0 {}
+            Convert.toDouble(json['percentage_of_total_supply']) ?? 0;
 
   @override
   String toString() {

lib/data/country.dart

@@ -11,7 +11,7 @@ class Country {
 
   Country.fromJson(Map<String, dynamic> json)
       : this.country = Convert.toNullableString(json['country']),
-        this.code = Convert.toNotNullableString(json['code'], '') {}
+        this.code = Convert.toNotNullableString(json['code'], '');
 
   @override
   String toString() {

lib/data/derivative.dart

@@ -62,7 +62,7 @@ class Derivative {
         this.volume24h = Convert.toDouble(json['volume_24h']) ?? 0,
         this.lastTradedAt = Convert.toDateTime(json['last_traded_at']) ??
             Helpers.defaultDateTime(),
-        this.expiredAt = Convert.toDateTime(json['expired_at']) {}
+        this.expiredAt = Convert.toDateTime(json['expired_at']);
 
   @override
   String toString() {

lib/data/derivative_exchange.dart

@@ -50,7 +50,7 @@ class DerivativeExchange {
         this.yearEstablished = Convert.toInt(json['year_established']) ?? 0,
         this.country = Convert.toNullableString(json['country']),
         this.description = Convert.toNotNullableString(json['description'], ''),
-        this.url = Convert.toNotNullableString(json['url'], '') {}
+        this.url = Convert.toNotNullableString(json['url'], '');
 
   @override
   String toString() {

lib/data/derivative_exchange_extended.dart

@@ -58,7 +58,7 @@ class DerivativeExchangeExtended {
         this.country = Convert.toNullableString(json['country']),
         this.description = Convert.toNotNullableString(json['description'], ''),
         this.url = Convert.toNotNullableString(json['url'], ''),
-        this.tickers = _parseTickers(json['tickers']) {}
+        this.tickers = _parseTickers(json['tickers']);
 
   @override
   String toString() {

lib/data/derivative_exchange_short.dart

@@ -11,7 +11,7 @@ class DerivativeExchangeShort {
 
   DerivativeExchangeShort.fromJson(Map<String, dynamic> json)
       : this.id = Convert.toNotNullableString(json['id'], ''),
-        this.name = Convert.toNotNullableString(json['name'], '') {}
+        this.name = Convert.toNotNullableString(json['name'], '');
 
   @override
   String toString() {

lib/data/derivative_ticker.dart

@@ -77,7 +77,7 @@ class DerivativeTicker {
             Helpers.parseMapStringDouble(json['converted_last']) ?? {},
         this.lastTraded = Convert.toDateTime(json['last_traded']) ??
             Helpers.defaultDateTime(),
-        this.expiredAt = Convert.toDateTime(json['expired_at']) {}
+        this.expiredAt = Convert.toDateTime(json['expired_at']);
 
   @override
   String toString() {

lib/data/event.dart

@@ -57,7 +57,7 @@ class Event {
         this.address = Convert.toNotNullableString(json['address'], ''),
         this.city = Convert.toNotNullableString(json['city'], ''),
         this.country = Convert.toNotNullableString(json['country'], ''),
-        this.screenshot = Convert.toNotNullableString(json['screenshot'], '') {}
+        this.screenshot = Convert.toNotNullableString(json['screenshot'], '');
 
   @override
   String toString() {

lib/data/exchange.dart

@@ -54,7 +54,7 @@ class Exchange {
         this.tradeVolume24hBtc =
             Convert.toDouble(json['trade_volume_24h_btc']) ?? 0,
         this.tradeVolume24hBtcNormalized =
-            Convert.toDouble(json['trade_volume_24h_btc_normalized']) ?? 0 {}
+            Convert.toDouble(json['trade_volume_24h_btc_normalized']) ?? 0;
 
   @override
   String toString() {

lib/data/exchange_extended.dart

@@ -120,7 +120,7 @@ class ExchangeExtended {
         this.tradeVolume24hBtcNormalized =
             Convert.toDouble(json['trade_volume_24h_btc_normalized']) ?? 0,
         this.tickers = _parseTickers(json['tickers']),
-        this.statusUpdates = _parseStatusUpdates(json['status_updates']) {}
+        this.statusUpdates = _parseStatusUpdates(json['status_updates']);
 
   @override
   String toString() {

lib/data/exchange_market.dart

@@ -20,7 +20,7 @@ class ExchangeMarket {
         this.identifier = Convert.toNotNullableString(json['identifier'], ''),
         this.hasTradingIncentive =
             Convert.toNotNullableBoolean(json['has_trading_incentive'], false),
-        this.logo = Convert.toNullableString(json['logo']) {}
+        this.logo = Convert.toNullableString(json['logo']);
 
   @override
   String toString() {

lib/data/exchange_rate.dart

@@ -19,7 +19,7 @@ class ExchangeRate {
       : this.name = Convert.toNotNullableString(json['name'], ''),
         this.unit = Convert.toNotNullableString(json['unit'], ''),
         this.value = Convert.toDouble(json['value']) ?? 0,
-        this.type = Convert.toNotNullableString(json['type'], '') {}
+        this.type = Convert.toNotNullableString(json['type'], '');
 
   @override
   String toString() {

lib/data/exchange_short.dart

@@ -11,7 +11,7 @@ class ExchangeShort {
 
   ExchangeShort.fromJson(Map<String, dynamic> json)
       : this.id = Convert.toNotNullableString(json['id'], ''),
-        this.name = Convert.toNotNullableString(json['name'], '') {}
+        this.name = Convert.toNotNullableString(json['name'], '');
 
   @override
   String toString() {

lib/data/exchange_volume_data.dart

@@ -11,7 +11,7 @@ class ExchangeVolumeData {
 
   ExchangeVolumeData.fromArray(List<dynamic> array)
       : this.date = Convert.toDateTime(array[0]) ?? Helpers.defaultDateTime(),
-        this.volume = Convert.toDouble(array[1]) ?? 0 {}
+        this.volume = Convert.toDouble(array[1]) ?? 0;
 
   @override
   String toString() {

lib/data/finance_platform.dart

@@ -24,8 +24,7 @@ class FinancePlatform {
         this.category = Convert.toNotNullableString(json['category'], ''),
         this.centralized =
             Convert.toNotNullableBoolean(json['centralized'], false),
-        this.websiteUrl =
-            Convert.toNotNullableString(json['website_url'], '') {}
+        this.websiteUrl = Convert.toNotNullableString(json['website_url'], '');
 
   @override
   String toString() {

lib/data/finance_product.dart

@@ -50,7 +50,7 @@ class FinanceProduct {
         this.startAt = _parseDate(json['start_at']),
         this.endAt = _parseDate(json['end_at']),
         this.valueAt = _parseDate(json['value_at']),
-        this.redeemAt = _parseDate(json['redeem_at']) {}
+        this.redeemAt = _parseDate(json['redeem_at']);
 
   @override
   String toString() {

lib/data/global_coin_data.dart

@@ -47,7 +47,7 @@ class GlobalCoinData {
             Helpers.parseMapStringDouble(json['market_cap_percentage']),
         this.marketCapChangePercentage24hUsd =
             Convert.toDouble(json['market_cap_change_percentage_24h_usd']),
-        this.updatedAt = Convert.toDateTime(json['updated_at']) {}
+        this.updatedAt = Convert.toDateTime(json['updated_at']);
 
   @override
   String toString() {

lib/data/global_defi_data.dart

@@ -33,7 +33,7 @@ class GlobalDefiData {
         this.defiDominance = Convert.toDouble(json['defi_dominance']) ?? 0,
         this.topCoinName = Convert.toNullableString(json['top_coin_name']),
         this.topCoinDefiDominance =
-            Convert.toDouble(json['top_coin_defi_dominance']) ?? 0 {}
+            Convert.toDouble(json['top_coin_defi_dominance']) ?? 0;
 
   @override
   String toString() {

lib/data/image_info.dart

@@ -15,7 +15,7 @@ class ImageInfo {
   ImageInfo.fromJson(Map<String, dynamic> json)
       : this.thumb = Convert.toNullableString(json['thumb']),
         this.small = Convert.toNullableString(json['small']),
-        this.large = Convert.toNullableString(json['large']) {}
+        this.large = Convert.toNullableString(json['large']);
 
   @override
   String toString() {

lib/data/localized_string.dart

@@ -20,7 +20,7 @@ class LocalizedString {
 
   LocalizedString.fromJson(Map<String, dynamic> json)
       : this.id = Convert.toNotNullableString(json['id'], ''),
-        this.translations = _parseTranslations(json) {}
+        this.translations = _parseTranslations(json);
 
   @override
   String toString() {

lib/data/market.dart

@@ -152,7 +152,7 @@ class Market {
             Convert.toDouble(json['price_change_percentage_1y_in_currency']),
         this.sparklineIn7d = json.containsKey('sparkline_in_7d')
             ? MarketSparkline.fromJson(json['sparkline_in_7d'])
-            : null {}
+            : null;
 
   @override
   String toString() {

lib/data/market_chart_data.dart

@@ -19,7 +19,7 @@ class MarketChartData {
     this.price,
     this.marketCap,
     this.totalVolume,
-  }) {}
+  });
 
   @override
   String toString() {

lib/data/market_data.dart

@@ -99,7 +99,7 @@ class MarketData {
     this.priceChangePercentage1yInCurrency,
     this.marketCapChange24hInCurrency,
     this.marketCapChangePercentage24hInCurrency,
-  }) {}
+  });
 
   @override
   String toString() {

lib/data/market_index.dart

@@ -20,7 +20,7 @@ class MarketIndex {
         this.market = Convert.toNotNullableString(json['market'], ''),
         this.last = Convert.toDouble(json['last']) ?? 0,
         this.isMultiAssetComposite =
-            Convert.toNullableBoolean(json['is_multi_asset_composite']) {}
+            Convert.toNullableBoolean(json['is_multi_asset_composite']);
 
   @override
   String toString() {

lib/data/market_index_identified.dart

@@ -24,7 +24,7 @@ class MarketIndexIdentified {
         this.market = Convert.toNotNullableString(json['market'], ''),
         this.last = Convert.toDouble(json['last']) ?? 0,
         this.isMultiAssetComposite =
-            Convert.toNullableBoolean(json['is_multi_asset_composite']) {}
+            Convert.toNullableBoolean(json['is_multi_asset_composite']);
 
   @override
   String toString() {

lib/data/market_index_short.dart

@@ -11,7 +11,7 @@ class MarketIndexShort {
 
   MarketIndexShort.fromJson(Map<String, dynamic> json)
       : this.id = Convert.toNotNullableString(json['id'], ''),
-        this.name = Convert.toNotNullableString(json['name'], '') {}
+        this.name = Convert.toNotNullableString(json['name'], '');
 
   @override
   String toString() {

lib/data/market_sparkline.dart

@@ -6,7 +6,7 @@ class MarketSparkline {
   final List<double> price;
 
   MarketSparkline.fromJson(Map<String, dynamic> json)
-      : this.price = Helpers.parseListDouble(json['price']) {}
+      : this.price = Helpers.parseListDouble(json['price']);
 
   @override
   String toString() {

lib/data/ohlc_info.dart

@@ -26,7 +26,7 @@ class OHLCInfo {
         this.open = Convert.toDouble(array[1]) ?? 0,
         this.high = Convert.toDouble(array[2]) ?? 0,
         this.low = Convert.toDouble(array[3]) ?? 0,
-        this.close = Convert.toDouble(array[4]) ?? 0 {}
+        this.close = Convert.toDouble(array[4]) ?? 0;
 
   @override
   String toString() {

lib/data/price_info.dart

@@ -36,6 +36,6 @@ class PriceInfo {
 
   @override
   String toString() {
-    return '${Helpers.getTypeName(PriceInfo)}: id = ${id}';
+    return '${Helpers.getTypeName(PriceInfo)}: id = $id';
   }
 }