char const* GetModelExtension( int aIndex ) { if( aIndex < 0 || aIndex >= NEXTS ) return NULL; return file_data.extensions[aIndex]; } // 返回该插件提供的筛选字符串数量 // return the number of filter strings string char const* GetFileFilter( int aIndex ) { if( aIndex < 0 || aIndex >= NFILS ) return NULL; return file_data.filters[aIndex]; } // 返回 false，因为此插件不提供可视化数据 // return false since this plugin not provide visualization data bool CanRender( void ) { return false; } // 返回 null，因为此插件不提供可视化数据 // return NULL since this plugin does not provide visualization data SCENEGRAPH* Load( char const*

and asteroids 2 this.game.physics.arcade.collide(this.player, this.asteroids, this.hitAsteroid, null, this); Define the hitAsteroid() method where we play an explosion sound, destroy the ship and emitter.maxParticleSpeed.setTo(200, 200); 10 emitter.gravity = 0; 11 emitter.start(true, 1000, null, 100); 12 this.player.kill(); 13 14 //call the gameOver method in 800 milliseconds, we particle emission (a single explosion), which will last 1 second (1000 milliseconds), then we put null because that’s also for repeating emissions (it defines how many per emission), lastly we’ll send

char const* GetModelExtension( int aIndex ) { if( aIndex < 0 || aIndex >= NEXTS ) return NULL; return file_data.extensions[aIndex]; } // return the number of filter strings provided by return NULL; return file_data.filters[aIndex]; } // return false since this plugin does not provide visualization data bool CanRender( void ) { return false; } // return NULL since this const* aFileName ) { // this dummy plugin does not support rendering of any models return NULL; } This source file meets all the minimum requirements to implement a 3D plugin. The plugin does

char const* GetModelExtension( int aIndex ) { if( aIndex < 0 || aIndex >= NEXTS ) return NULL; return file_data.extensions[aIndex]; } // return the number of filter strings provided by return NULL; return file_data.filters[aIndex]; } // return false since this plugin does not provide visualization data bool CanRender( void ) { return false; } // return NULL since this const* aFileName ) { // this dummy plugin does not support rendering of any models return NULL; } This source file meets all the minimum requirements to implement a 3D plugin. The plugin does

string char const* GetModelExtension( int aIndex ) { if( aIndex < 0 || aIndex >= NEXTS ) return NULL; return file_data.extensions[aIndex]; } // return the number of filter strings provided by this NFILS ) return NULL; return file_data.filters[aIndex]; } // return false since this plugin does not provide visualization data bool CanRender( void ) { return false; } // return NULL since this plugin char const* aFileName ) { // this dummy plugin does not support rendering of any models return NULL; } This source file meets all the minimum requirements to implement a 3D plugin. The plugin does

string char const* GetModelExtension( int aIndex ) { if( aIndex < 0 || aIndex >= NEXTS ) return NULL; return file_data.extensions[aIndex]; } // return the number of filter strings provided by this NFILS ) return NULL; return file_data.filters[aIndex]; } // return false since this plugin does not provide visualization data bool CanRender( void ) { return false; } // return NULL since this plugin char const* aFileName ) { // this dummy plugin does not support rendering of any models return NULL; } This source file meets all the minimum requirements to implement a 3D plugin. The plugin does

string char const* GetModelExtension( int aIndex ) { if( aIndex < 0 || aIndex >= NEXTS ) return NULL; return file_data.extensions[aIndex]; } // b'' 返 b''b'' 回 b''b'' 该 b''b'' 插 b''b'' 件 b''b'' 提 b''b'' filter string char const* GetFileFilter( int aIndex ) { if( aIndex < 0 || aIndex >= NFILS ) return NULL; return file_data.filters[aIndex]; } // b'' 返 b''b'' 回 b'' falseb ''，b''b'' 因 b''b'' 为 b''b'' 此 插 b''b'' 件 b''b'' 不 b''b'' 提 b''b'' 供 b''b'' 可 b''b'' 视 b''b'' 化 b''b'' 数 b''b'' 据 b'' // return NULL since this plugin does not provide visualization data SCENEGRAPH* Load( char const* aFileName )

que le exampleTypeId et que le description soient null. • ERROR_MESSAGE_LIST : pour obtenir un ErrorMessage list il faut; que le exampleTypeId soit null. 7.6. FrontJs Glossary watchers c’est nom du GenericValue in the database. Used instead of delegator.findList(entityName, inputMap, null, null, null, false) method name: 'select' type: 'org.apache.ofbiz.entity.util.EntityQuery' params: [entity: Groovy evaluates to a Boolean type // everything that is empty or false will turn into false: // null, [], [:], "", false -> false if (UtilValidate.isEmpty(fieldName)) {} 50 Minilang Groovy

GenericValue in the database. Used instead of delegator.findList(entityName, inputMap, null, null, null, false) method name: 'select' type: 'org.apache.ofbiz.entity.util.EntityQuery' params: [entity: Groovy evaluates to a Boolean type // everything that is empty or false will turn into false: // null, [], [:], "", false -> false if (UtilValidate.isEmpty(fieldName)) {} 39 Minilang Groovy operator="equals"> // this will even work, if product is not existent or null if (UtilValidate.areEqual(product ?.primaryProductCategoryId, parameters .productCategoryId)) {

Necessary for some applications like copy constructors. Makes it clear, unlike with pointers, that a null pointer is not a possible value. References can be confusing, as they have value syntax but pointer using const T* is preferable to const T& for input parameters. For example: • You want to pass in a null pointer. • The function saves a pointer or reference to the input. Remember that most of the time = 0; bool Derived::Equal(Base* other) { Derived* that = dynamic_cast(other); if (that == NULL) return false; ... } RTTI has legitimate uses but is prone to abuse, so you must be careful when