model = Sequential()
model.add(Dense(24, input_dim=13, activation='relu'))
model.add(Dense(18, activation='relu'))
model.add(Dense(6, activation='softmax'))
model.compile(loss='categorical_crossentropy', optimizer='adam', metrics=['accuracy'])

-

history = model.fit(X_train, y_train, batch_size = 256, epochs = 10, verbose = 2, validation_split = 0.2)

-

score, acc = model.evaluate(X_test, y_test,verbose=2, batch_size= 256)
print('test accuracy:', acc)

-

yhat_classes = model.predict_classes(X_test)
 

Launching lib/main.dart on iPhone 13 in debug mode...
Running pod install...                                              5.3s
Running Xcode build...                                                  
Xcode build done.                                           104.1s
Failed to build iOS app
Error output from Xcode build:
↳
    objc[25282]: Class AMSupportURLConnectionDelegate is implemented in both /usr/lib/libamsupport.dylib (0x203913130) and
    /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x103bc02c8). One of the two will be used. Which one is undefined.
    objc[25282]: Class AMSupportURLSession is implemented in both /usr/lib/libamsupport.dylib (0x203913180) and
    /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x103bc0318). One of the two will be used. Which one is undefined.
    ** BUILD FAILED **

[✓] Flutter (Channel stable, 2.8.1, on macOS 12.0.1 21A559 darwin-arm, locale
    en-IN)
    • Flutter version 2.8.1 at
      /Users/macsystem/Documents/developer/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 77d935af4d (7 weeks ago), 2021-12-16 08:37:33 -0800
    • Engine revision 890a5fca2e
    • Dart version 2.15.1

[✓] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
    • Android SDK at /Users/macsystem/Library/Android/sdk
    • Platform android-32, build-tools 32.0.0
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.11.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2020.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[✓] Connected device (2 available)
    • iPhone 13 (mobile) • 05EC9698-3C26-44B9-8DB0-B53C7B6576F3 • ios
      • com.apple.CoreSimulator.SimRuntime.iOS-15-2 (simulator)
    • Chrome (web)       • chrome                               • web-javascript
      • Google Chrome 97.0.4692.99

ModuleBuildError: Module build failed (from ./node_modules/style-loader/dist/cjs.js):
TypeError: this.getOptions is not a function

"@storybook/preset-scss": "^1.0.3",
"css-loader": "^6.2.0",
"sass-loader": "^10.1.1",
"style-loader": "^3.2.1"

Data path "" must NOT have additional properties(extractCss).

  {
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "qiwkCollaborator": {
      "projectType": "application",
      "schematics": {
        "@schematics/angular:component": {
          "style": "scss"
        }
      },
      "root": "",
      "sourceRoot": "src",
      "prefix": "app",
      "architect": {
        "build": {

        /*  "configurations": {
            "fr": {
            "aot": true,
            "outputPath": "dist/qwikCollaborator/fr/",
            "i18nFile": "src/translate/messages.fr.xlf",      
            "i18nFormat": "xlf",      
            "i18nLocale": "fr",      
            "i18nMissingTranslation": "error"    
             },
             "en": {
            "aot": true,
            "outputPath": "dist/qwikCollaborator/en/",
            "i18nFile": "src/translate/messages.en.xlf",      
            "i18nFormat": "xlf",      
            "i18nLocale": "en",      
            "i18nMissingTranslation": "error"    
             }  
           },*/
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/qiwkCollaborator",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "aot": false,
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.scss",
              "src/assets/css/custom-mobile.css",
              "src/assets/css/custom.css"
            ],
            "scripts": [
              "node_modules/jquery/dist/jquery.min.js",
              "src/assets/js/qwikCollaborator.js"
            ]
          },
          "configurations": {
          "es5": {
        "tsConfig": "./tsconfig.es5.json"
      },
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "6kb",
                  "maximumError": "10kb"
                }
              ]
            }
          }
        },
        "serve": {
         /*  "configurations": {
            "fr": {
            "browserTarget": "qwikCollaborator:build:fr" 
            },
            "en": {
            "browserTarget": "qwikCollaborator:build:en" 
            } ,
            },*/
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "qiwkCollaborator:build"
          },
         
          "configurations": {
          "es5": {
        "browserTarget": "qiwkCollaborator:build:es5"
      },
            "production": {
              "browserTarget": "qiwkCollaborator:build:es5"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "qiwkCollaborator:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.spec.json",
            "karmaConfig": "karma.conf.js",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.scss"
            ],
            "scripts": ["../node_modules/jspdf/dist/jspdf.min.js"]
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "tsconfig.app.json",
              "tsconfig.spec.json",
              "e2e/tsconfig.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          }
        },
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "qiwkCollaborator:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "qiwkCollaborator:serve:production"
            }
          }
        }
      }
    }},
  "defaultProject": "qiwkCollaborator"
}

Native Memory Tracking:

(Omitting categories weighting less than 1KB)

Total: reserved=4431401KB, committed=1191617KB
-                 Java Heap (reserved=2097152KB, committed=479232KB)
                            (mmap: reserved=2097152KB, committed=479232KB) 
 
-                     Class (reserved=1052227KB, committed=22403KB)
                            (classes #29547)
                            (  instance classes #27790, array classes #1757)
                            (malloc=3651KB #79345) 
                            (mmap: reserved=1048576KB, committed=18752KB) 
                            (  Metadata:   )
                            (    reserved=139264KB, committed=130816KB)
                            (    used=130309KB)
                            (    waste=507KB =0.39%)
                            (  Class space:)
                            (    reserved=1048576KB, committed=18752KB)
                            (    used=18149KB)
                            (    waste=603KB =3.21%)
 
-                    Thread (reserved=387638KB, committed=40694KB)
                            (thread #378)
                            (stack: reserved=386548KB, committed=39604KB)
                            (malloc=650KB #2271) 
                            (arena=440KB #752)
 
-                      Code (reserved=253202KB, committed=76734KB)
                            (malloc=5518KB #23715) 
                            (mmap: reserved=247684KB, committed=71216KB) 
 
-                        GC (reserved=152419KB, committed=92391KB)
                            (malloc=40783KB #34817) 
                            (mmap: reserved=111636KB, committed=51608KB) 
 
-                  Compiler (reserved=1506KB, committed=1506KB)
                            (malloc=1342KB #2557) 
                            (arena=165KB #5)
 
-                  Internal (reserved=5579KB, committed=5579KB)
                            (malloc=5543KB #33822) 
                            (mmap: reserved=36KB, committed=36KB) 
 
-                     Other (reserved=231161KB, committed=231161KB)
                            (malloc=231161KB #347) 
 
-                    Symbol (reserved=30558KB, committed=30558KB)
                            (malloc=28887KB #769230) 
                            (arena=1670KB #1)
 
-    Native Memory Tracking (reserved=16412KB, committed=16412KB)
                            (malloc=575KB #8281) 
                            (tracking overhead=15837KB)
 
-        Shared class space (reserved=12288KB, committed=12136KB)
                            (mmap: reserved=12288KB, committed=12136KB) 
 
-               Arena Chunk (reserved=18743KB, committed=18743KB)
                            (malloc=18743KB) 
 
-                   Tracing (reserved=32KB, committed=32KB)
                            (arena=32KB #1)
 
-                   Logging (reserved=7KB, committed=7KB)
                            (malloc=7KB #289) 
 
-                 Arguments (reserved=1KB, committed=1KB)
                            (malloc=1KB #53) 
 
-                    Module (reserved=1045KB, committed=1045KB)
                            (malloc=1045KB #5026) 
 
-                 Safepoint (reserved=8KB, committed=8KB)
                            (mmap: reserved=8KB, committed=8KB) 
 
-           Synchronization (reserved=204KB, committed=204KB)
                            (malloc=204KB #2026) 
 
-            Serviceability (reserved=31187KB, committed=31187KB)
                            (malloc=31187KB #49714) 
 
-                 Metaspace (reserved=140032KB, committed=131584KB)
                            (malloc=768KB #622) 
                            (mmap: reserved=139264KB, committed=130816KB) 
 
-      String Deduplication (reserved=1KB, committed=1KB)
                            (malloc=1KB #8) 

[0x00007f6ccb970cbe] OopStorage::try_add_block()+0x2e
[0x00007f6ccb97132d] OopStorage::allocate()+0x3d
[0x00007f6ccbb34ee8] StackFrameInfo::StackFrameInfo(javaVFrame*, bool)+0x68
[0x00007f6ccbb35a64] ThreadStackTrace::dump_stack_at_safepoint(int)+0xe4
                             (malloc=6755KB type=Serviceability #10944)

java -Xmx512M -XX:NativeMemoryTracking=detail Test.java 

jcmd YOUR_PID VM.native_memory summary 

import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

public class Test {

    private static final int RUNNING = 40;
    private static final int WAITING = 460;

    private final Object monitor = new Object();
    private final ThreadMXBean threadMxBean = ManagementFactory.getThreadMXBean();
    private final ExecutorService executorService = Executors.newFixedThreadPool(RUNNING + WAITING);

    void startRunningThread() {
        executorService.submit(() -> {
            while (true) {
            }
        });
    }

    void startWaitingThread() {
        executorService.submit(() -> {
            try {
                monitor.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        });
    }

    void startThreads() {
        for (int i = 0; i < RUNNING; i++) {
            startRunningThread();
        }

        for (int i = 0; i < WAITING; i++) {
            startWaitingThread();
        }
    }

    void shutdown() {
        executorService.shutdown();
        try {
            executorService.awaitTermination(5, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    
    public static void main(String[] args) throws InterruptedException {
        Test test = new Test();

        Runtime.getRuntime().addShutdownHook(new Thread(test::shutdown));

        test.startThreads();

        for (int i = 0; i < 12000; i++) {
            ThreadInfo[] threadInfos = test.threadMxBean.dumpAllThreads(false, false);
            System.out.println("ThreadInfos: " + threadInfos.length);

            Thread.sleep(100);
        }

        test.shutdown();
    }
}

public static class StringCipher
{
    // This constant is used to determine the keysize of the encryption algorithm in bits.
    // We divide this by 8 within the code below to get the equivalent number of bytes.
    private const int Keysize = 128;

    // This constant determines the number of iterations for the password bytes generation function.
    private const int DerivationIterations = 1000;

    public static string Encrypt(string plainText, string passPhrase)
    {
        // Salt and IV is randomly generated each time, but is preprended to encrypted cipher text
        // so that the same Salt and IV values can be used when decrypting.  
        var saltStringBytes = Generate128BitsOfRandomEntropy();
        var ivStringBytes = Generate128BitsOfRandomEntropy();
        var plainTextBytes = Encoding.UTF8.GetBytes(plainText);
        using (var password = new Rfc2898DeriveBytes(passPhrase, saltStringBytes, DerivationIterations))
        {
            var keyBytes = password.GetBytes(Keysize / 8);
            using (var symmetricKey = Aes.Create())
            {
                symmetricKey.BlockSize = 128;
                symmetricKey.Mode = CipherMode.CBC;
                symmetricKey.Padding = PaddingMode.PKCS7;
                using (var encryptor = symmetricKey.CreateEncryptor(keyBytes, ivStringBytes))
                {
                    using (var memoryStream = new MemoryStream())
                    {
                        using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
                        {
                            cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
                            cryptoStream.FlushFinalBlock();
                            // Create the final bytes as a concatenation of the random salt bytes, the random iv bytes and the cipher bytes.
                            var cipherTextBytes = saltStringBytes;
                            cipherTextBytes = cipherTextBytes.Concat(ivStringBytes).ToArray();
                            cipherTextBytes = cipherTextBytes.Concat(memoryStream.ToArray()).ToArray();
                            memoryStream.Close();
                            cryptoStream.Close();
                            return Convert.ToBase64String(cipherTextBytes);
                        }
                    }
                }
            }
        }
    }

    public static string Decrypt(string cipherText, string passPhrase)
    {
        // Get the complete stream of bytes that represent:
        // [32 bytes of Salt] + [16 bytes of IV] + [n bytes of CipherText]
        var cipherTextBytesWithSaltAndIv = Convert.FromBase64String(cipherText);
        // Get the saltbytes by extracting the first 16 bytes from the supplied cipherText bytes.
        var saltStringBytes = cipherTextBytesWithSaltAndIv.Take(Keysize / 8).ToArray();
        // Get the IV bytes by extracting the next 16 bytes from the supplied cipherText bytes.
        var ivStringBytes = cipherTextBytesWithSaltAndIv.Skip(Keysize / 8).Take(Keysize / 8).ToArray();
        // Get the actual cipher text bytes by removing the first 64 bytes from the cipherText string.
        var cipherTextBytes = cipherTextBytesWithSaltAndIv.Skip((Keysize / 8) * 2).Take(cipherTextBytesWithSaltAndIv.Length - ((Keysize / 8) * 2)).ToArray();

        using (var password = new Rfc2898DeriveBytes(passPhrase, saltStringBytes, DerivationIterations))
        {
            var keyBytes = password.GetBytes(Keysize / 8);
            using (var symmetricKey = Aes.Create())
            {
                symmetricKey.BlockSize = 128;
                symmetricKey.Mode = CipherMode.CBC;
                symmetricKey.Padding = PaddingMode.PKCS7;
                using (var decryptor = symmetricKey.CreateDecryptor(keyBytes, ivStringBytes))
                {
                    using (var memoryStream = new MemoryStream(cipherTextBytes))
                    {
                        using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
                        {
                            var plainTextBytes = new byte[cipherTextBytes.Length];
                            var decryptedByteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
                            memoryStream.Close();
                            cryptoStream.Close();
                            return Encoding.UTF8.GetString(plainTextBytes, 0, decryptedByteCount);
                        }
                    }
                }
            }
        }
    }

    private static byte[] Generate128BitsOfRandomEntropy()
    {
        var randomBytes = new byte[16]; // 16 Bytes will give us 128 bits.
        using (var rngCsp = RandomNumberGenerator.Create())
        {
            // Fill the array with cryptographically secure random bytes.
            rngCsp.GetBytes(randomBytes);
        }
        return randomBytes;
    }
}

var input = "12345678901234567890";
var inputLength = input.Length;
var inputBytes = Encoding.UTF8.GetBytes(input);

var encrypted = StringCipher.Encrypt(input, "nzv86ri4H2qYHqc&m6rL");

var output = StringCipher.Decrypt(encrypted, "nzv86ri4H2qYHqc&m6rL");
var outputLength = output.Length;
var outputBytes = Encoding.UTF8.GetBytes(output);

var lengthDiff = inputLength - outputLength;

karar@Karars-MacBook-Air ios % pod install
Auto-linking React Native modules for target `ReactNativeStarter`: BVLinearGradient, RNCMaskedView, RNGestureHandler, RNLocalize, RNReanimated, RNScreens, RNVectorIcons, ReactNativeUiLib, react-native-safe-area-context, and toolbar-android
Analyzing dependencies
Fetching podspec for `DoubleConversion` from `../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec`
Fetching podspec for `Folly` from `../node_modules/react-native/third-party-podspecs/Folly.podspec`
Fetching podspec for `glog` from `../node_modules/react-native/third-party-podspecs/glog.podspec`
Downloading dependencies
Installing BVLinearGradient (2.5.6)
Installing DoubleConversion (1.1.6)
Installing FBLazyVector (0.63.1)
Installing FBReactNativeSpec (0.63.1)
Installing Folly (2020.01.13.00)
Installing RCTRequired (0.63.1)
Installing RCTTypeSafety (0.63.1)
Installing RNCMaskedView (0.1.10)
Installing RNGestureHandler (1.8.0)
Installing RNLocalize (1.4.2)
Installing RNReanimated (1.13.1)
Installing RNScreens (2.11.0)
Installing RNVectorIcons (6.7.0)
Installing React (0.63.1)
Installing React-Core (0.63.1)
Installing React-CoreModules (0.63.1)
Installing React-RCTActionSheet (0.63.1)
Installing React-RCTAnimation (0.63.1)
Installing React-RCTBlob (0.63.1)
Installing React-RCTImage (0.63.1)
Installing React-RCTLinking (0.63.1)
Installing React-RCTNetwork (0.63.1)
Installing React-RCTSettings (0.63.1)
Installing React-RCTText (0.63.1)
Installing React-RCTVibration (0.63.1)
Installing React-callinvoker (0.63.1)
Installing React-cxxreact (0.63.1)
Installing React-jsi (0.63.1)
Installing React-jsiexecutor (0.63.1)
Installing React-jsinspector (0.63.1)
Installing ReactCommon (0.63.1)
Installing ReactNativeUiLib (3.41.0)
Installing Yoga (1.14.0)
Installing boost-for-react-native (1.63.0)
Installing glog (0.3.5)
[!] /bin/bash -c 
set -e
#!/bin/bash
# Copyright (c) Facebook, Inc. and its affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.

set -e

PLATFORM_NAME="${PLATFORM_NAME:-iphoneos}"
CURRENT_ARCH="${CURRENT_ARCH}"

if [ -z "$CURRENT_ARCH" ] || [ "$CURRENT_ARCH" == "undefined_arch" ]; then
    # Xcode 10 beta sets CURRENT_ARCH to "undefined_arch", this leads to incorrect linker arg.
    # it's better to rely on platform name as fallback because architecture differs between simulator and device

    if [[ "$PLATFORM_NAME" == *"simulator"* ]]; then
        CURRENT_ARCH="x86_64"
    else
        CURRENT_ARCH="armv7"
    fi
fi

export CC="$(xcrun -find -sdk $PLATFORM_NAME cc) -arch $CURRENT_ARCH -isysroot $(xcrun -sdk $PLATFORM_NAME --show-sdk-path)"
export CXX="$CC"

# Remove automake symlink if it exists
if [ -h "test-driver" ]; then
    rm test-driver
fi

./configure --host arm-apple-darwin

# Fix build for tvOS
cat << EOF >> src/config.h

/* Add in so we have Apple Target Conditionals */
#ifdef __APPLE__
#include 
#include 
#endif

/* Special configuration for AppleTVOS */
#if TARGET_OS_TV
#undef HAVE_SYSCALL_H
#undef HAVE_SYS_SYSCALL_H
#undef OS_MACOSX
#endif

/* Special configuration for ucontext */
#undef HAVE_UCONTEXT_H
#undef PC_FROM_UCONTEXT
#if defined(__x86_64__)
#define PC_FROM_UCONTEXT uc_mcontext->__ss.__rip
#elif defined(__i386__)
#define PC_FROM_UCONTEXT uc_mcontext->__ss.__eip
#endif
EOF

# Prepare exported header include
EXPORTED_INCLUDE_DIR="exported/glog"
mkdir -p exported/glog
cp -f src/glog/log_severity.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/raw_logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/stl_logging.h "$EXPORTED_INCLUDE_DIR/"
cp -f src/glog/vlog_is_on.h "$EXPORTED_INCLUDE_DIR/"

checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for arm-apple-darwin-strip... no
checking for strip... strip
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for arm-apple-darwin-gcc... /Library/Developer/CommandLineTools/usr/bin/cc -arch armv7 -isysroot 
checking whether the C compiler works... no
xcrun: error: SDK "iphoneos" cannot be located
xcrun: error: SDK "iphoneos" cannot be located
xcrun: error: SDK "iphoneos" cannot be located
xcrun: error: unable to lookup item 'Path' in SDK 'iphoneos'
/Users/karar/Library/Caches/CocoaPods/Pods/External/glog/2263bd123499e5b93b5efe24871be317-40a13/missing: Unknown `--is-lightweight' option
Try `/Users/karar/Library/Caches/CocoaPods/Pods/External/glog/2263bd123499e5b93b5efe24871be317-40a13/missing --help' for more information
configure: WARNING: 'missing' script is too old or missing
configure: error: in `/Users/karar/Library/Caches/CocoaPods/Pods/External/glog/2263bd123499e5b93b5efe24871be317-40a13':
configure: error: C compiler cannot create executables
See `config.log' for more details

karar@Karars-MacBook-Air ios %