Adapter, Decorator and Flyweight + minor updates

README.md

@@ -5,7 +5,7 @@ Leonardo Viada - 2020
 ### Creazionali
 
 - [x] Factory method
-- [x] Singoletto
+- [x] Singleton
 - [x] Prototype
 - [x] Builder
 - [x] Abstract factory
@@ -15,12 +15,9 @@ Leonardo Viada - 2020
 - [x] Composite
 - [x] Proxy
 - [x] Facade
-- Flyweight
-- Adapter
-- Decorator
-
----
-
+- [x] Flyweight
+- [x] Adapter
+- [x] Decorator o Wrapper
 - Bridge
 - Twins
 
@@ -31,10 +28,10 @@ Leonardo Viada - 2020
 - Template
 - Null Object
 - State
+- [x] Chain of responsibility
 
 ---
 
-- [x] Chain of responsibility
 - Iterator
 - Mediator
 - Command

strutturali/Adapter.ts

@@ -0,0 +1,56 @@
+type IndiceBorsa = [number, string]
+type IndiceComprensibile = { nomeTitolo: string, valore: number }
+
+interface RestituisceDatiFinanziariComprensibili {
+  getAggiornamentoIndici(): IndiceComprensibile[];
+}
+
+class FornitoreDatiFinanziari {
+  getAggiornamentoIndici(): IndiceBorsa[] {
+    let ret = [];
+    for (let i = 1; i <= 25; i++) {
+      ret.push([i * Math.random() * 10, FornitoreDatiFinanziari.generaId()]);
+    }
+    console.log('indici brutti');
+    console.log(ret);
+    return ret;
+  };
+
+  static generaId = () => {
+    return '' + Math.random().toString(36).substr(2, 4).toUpperCase();
+  };
+}
+
+class AdapterDatiFinanziari implements RestituisceDatiFinanziariComprensibili {
+  constructor(public adattato: FornitoreDatiFinanziari) {};
+
+  getAggiornamentoIndici(): IndiceComprensibile[] {
+    let indici = this.adattato.getAggiornamentoIndici();
+    return indici.map(indice => {
+      return { nomeTitolo: indice[1], valore: indice[0] };
+    });
+  }
+}
+
+class LibreriaInfografica {
+  dati: IndiceComprensibile[];
+
+  constructor(public fornitoreDati: RestituisceDatiFinanziariComprensibili) {}
+
+  fetchDati() {
+    this.dati = this.fornitoreDati.getAggiornamentoIndici();
+  }
+
+  print() {
+    this.dati.forEach(dato => console.log(dato));
+  }
+}
+
+/* --- */
+
+const frntrDt = new FornitoreDatiFinanziari();
+const adapter = new AdapterDatiFinanziari(frntrDt);
+
+const laMiaLibreria = new LibreriaInfografica(adapter);
+laMiaLibreria.fetchDati();
+laMiaLibreria.print();

strutturali/Decorator.ts

@@ -0,0 +1,5 @@
+/* per esempio applicato al web vedi https://github.com/leonardoviada/kisspress/tree/master/src/controllers/decorators */
+
+/*
+* @todo inserire esempio più standard
+*/

strutturali/Flyweight.ts

@@ -0,0 +1,98 @@
+type Caratteristica = string | number;
+
+class Albero {
+  constructor(public x: number, public y: number, public modello: ModelloAlbero) {}
+
+  renderizza() {
+    console.log(`[${ this.x },${ this.y }] renderizzo albero`);
+  }
+}
+
+class ModelloAlbero {
+  constructor(public nome: string, public caratteristica: Caratteristica, public textureInOttoK: string) {}
+}
+
+class FabbricaDiAlberi {
+  modelli: ModelloAlbero[] = [];
+
+  addModel(model: ModelloAlbero): void {
+    this.modelli.push(model);
+  }
+
+  getModelByCaratteristica(caratteristica: Caratteristica): ModelloAlbero {
+    for (let modello of this.modelli) {
+      if (modello.caratteristica === caratteristica) return modello;
+    }
+
+    return new ModelloAlbero('', -1, '');
+    /* @todo aggiungere return in caso di modello non trovato */
+  }
+}
+
+
+class Foresta {
+  alberi: Albero[] = [];
+
+  piantaAlbero(albero: Albero): void {
+    this.alberi.push(albero);
+  }
+
+  renderizzaCampoDiGioco(): void {
+    this.alberi.forEach(albero => albero.renderizza());
+  }
+}
+
+/* --- */
+
+/*
+* @todo Formattare le enum
+* @body le enum dovrebbero essere capitalized e i valori TUTTI UPPERCASE
+*/
+enum Caratteristiche {
+  altissimo,
+  faOmbra,
+  potrebbeCadere
+}
+
+const fbrAlberi = new FabbricaDiAlberi();
+fbrAlberi.addModel(new ModelloAlbero('Pino', Caratteristiche.faOmbra, 'una texture pesantissima'));
+fbrAlberi.addModel(new ModelloAlbero('Sequoia', Caratteristiche.altissimo, 'altri miliardi di pixel'));
+
+const frst = new Foresta();
+
+for (let i = 0; i < 100; i++)
+  frst.piantaAlbero(new Albero(i, Math.pow(i, 2) + 3 * i, fbrAlberi.getModelByCaratteristica(Caratteristiche.faOmbra)));
+
+frst.renderizzaCampoDiGioco();
+console.log('---\nalberi renderizzati: 100');
+console.log(`texture pesantissime in memoria: ${ fbrAlberi.modelli.length }`);
+
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tsconfig.json

@@ -0,0 +1,77 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig.json to read more about this file */
+
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "es5",
+    /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+    "module": "commonjs",
+    /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    // "lib": [],                             /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    // "outDir": "./",                        /* Redirect output structure to the directory. */
+    // "rootDir": "./",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true,
+    /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true,
+    /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    "experimentalDecorators": true,
+    /* Enables experimental support for ES7 decorators. */
+    "emitDecoratorMetadata": true,
+    /* Enables experimental support for emitting type metadata for decorators. */
+
+    /* Advanced Options */
+    "skipLibCheck": true,
+    /* Skip type checking of declaration files. */
+    "forceConsistentCasingInFileNames": true
+    /* Disallow inconsistently-cased references to the same file. */
+  }
+}