scala sheets review

= "Wkiol1wy7o_zxj0taad50i3lc4y415.jpg"/>④ClickSRC,PressAlt + Insert, first create Package, and then createScala Class650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/70/27/wKiom1Wy6xGRhgLHAAFGIw2NhXc042.jpg "title=" 5.png " alt= "Wkiom1wy6xgrhglhaafgiw2nhxc042.jpg"/>⑤ when you create a Scala class , select the Object650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/70/24/wKioL1Wy7QbA-4SHAACpuLm0Nug088.jpg "title=" 6.png " alt= "Wkio

= "Wkiol1wy7o_zxj0taad50i3lc4y415.jpg"/>④ClickSRC,PressAlt + Insert, first create Package, and then createScala Class650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/70/27/wKiom1Wy6xGRhgLHAAFGIw2NhXc042.jpg "title=" 5.png " alt= "Wkiom1wy6xgrhglhaafgiw2nhxc042.jpg"/>⑤ when you create a Scala class , select the Object650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/70/24/wKioL1Wy7QbA-4SHAACpuLm0Nug088.jpg "title=" 6.png " alt= "Wkio

=" wkiol1w1c1dyxvouaad8gzvpene977.jpg "/> mode 2: (Lists all files in the current directory)650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/70/3D/wKioL1W1C2rzPkWfAAIYoPv3veI083.jpg "title=" 8-2. PNG "alt=" wkiol1w1c2rzpkwfaaiyopv3vei083.jpg "/>6, exception handling Similar to Java, the exception is handled by Try,catch, but, unlikeScala, it uses a case to match a different exception, that is, in a catch can write many exceptions, as long as the first match succeeds, the following exce

.jpg "/> Because the methods and properties in object are static, this is the ideal vector for singleton objects, as shown in the example code:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/70/72/wKioL1W4ZYzjIBqKAAIO0Ll5BbQ797.jpg "title=" 3-7. PNG "alt=" wkiol1w4zyzjibqkaaio0ll5bbq797.jpg "/> In other words, Object itself is a singleton object. Resources:DT Big Data DreamWorks public number :D t_sparkThis article is from "My Heart Flying" blog, please make sure to keep this source

=" wkiol1w1c1dyxvouaad8gzvpene977.jpg "/> mode 2: (Lists all files in the current directory)650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/70/3D/wKioL1W1C2rzPkWfAAIYoPv3veI083.jpg "title=" 8-2. PNG "alt=" wkiol1w1c2rzpkwfaaiyopv3vei083.jpg "/>6, exception handling Similar to Java, the exception is handled by Try,catch, but, unlikeScala, it uses a case to match a different exception, that is, in a catch can write many exceptions, as long as the first match succeeds, the following exce