record

问题 I am new to spark and I am trying to run a simple spark streaming application that reads data from a csv file and displays it. Seems like spark streaming works but it still shows "0" records on the Streaming UI application.Here is my code: public class App { public static void main(String[] args) throws Exception { // Get an instance of spark-conf, required to build the spark session SparkConf conf = new SparkConf().setAppName("StreamingExample").setMaster("local"); JavaStreamingContext jsc =

问题 I am using RAD XE7. In my Delphi application I want to set default values for fields of Records. I tried following code, but it does not compile, I know it is wrong. I there any another way? TDtcData = record TableFormat : TExtTableFormat = fmNoExtendedData; DTC : integer = 0; Description : string = 'Dummy'; Status : TDtcStatus; OccurenceCnt : integer =20; FirstDTCSnapShot: integer; LastDTCSnapShot: integer; end; 回答1: If you want to define a partially initialized record, just declare a

问题 I've made the same dumb mistake many many times: (defrecord Record [field-name]) (let [field (:feld-name (->Record 1))] ; Whoops! (+ 1 field)) Since I misspelled the field name keyword, this will cause a NPE. The "obvious" solution to this would be to have defrecord emit namespaced keywords instead, since then, especially when working in a different file, the IDE will be able to immediately show what keywords are available as soon as I type ::n/ . I could probably with some creativity create

问题 public AudioRecord (int audioSource, int sampleRateInHz, int channelConfig, int audioFormat, int bufferSizeInBytes) This is the Public Constructor of AudioRecord , you can find the last parameter called bufferSizeInBytes , and it means "the total size (in bytes) of the buffer where audio data is written to during the recording." in android docs. I thought this is a buffer for storing all data which is sampled from audio hardware. i have a question : If the number of data which is sampled

问题 I have created a table named 'students'. It has following fields : roll_no <- type:Integer Not Null, course_name <- type:varchar(40) Not Null, std_surname <- type:varchar(40) Not Null, std_firstname <- type:varchar(40) Not Null, emailid <- type:varchar(40) , address <- type:varchar(40) Not Null, income <- type:Integer, gender <- type:varchar(10) Not Null, experience <- type:Integer, in the above fields mentioned some accept null values and most of them don't accept null values or null values

问题 While reviewing some code in our legacy Delphi 7 program, I noticed that everywhere there is a record it is marked with packed . This of course means that the record is stored byte-for-byte and not aligned to be faster for the CPU to access. The packing seems to have been done blindly as an attempt to outsmart the compiler or something -- basically valuing a few bytes of memory instead of faster access An example record: TFooTypeRec = packed record RID : Integer; Description : String;

问题 I'd like to put all mySql results in a html table. This is mySql: SELECT date(vwr_date) AS mon, date(vwr_date) AS date, count(vwr_cid) AS views FROM car_viewer WHERE Year(vwr_date)='2012' AND vwr_tid='18' GROUP BY date ORDER BY date DESC From the query above, it results like this: date views 2012-10-23 14 2012-10-22 339 2012-10-21 305 2012-10-20 354 .... 2012-10-01 291 2012-09-30 246 2012-09-29 297 ... 2012-09-01 281 The result from mysql is very good. And now this is a problem. I tried many

问题 Working on my project in XE8, i've faced a necessity to save and read custom project files, which store variables and records of different types. Initially, my approach to solving that problem seemed to work, but in actual project it proved faulty. My method for creating a file, storing a "Categories" record: var SavingStream: TFileStream; i,j: Integer; begin SavingStream:=TFileStream.Create('SAVE.test', fmCreate or fmOpenWrite or fmShareDenyWrite); SavingStream.Position:=0; i:=Length

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 12 days ago . I did not find any information available online on how to record a meeting(audio or video) scheduled using skype for business online (skype web sdk). All I see is information only on skype for business onpremises which full clients to record and store meeting in local storage. It will be very grateful if someone

问题 I have a requirement to split my input file which contains records of different length and type some beans. I am able to map each record to different bean using CompositeItemReader. But there is some parent-child relation exists between these records. I want to form a bean which contains child beans. Any help is appreciated. This is my sample input file. AB,01,05,HHGFG,05 CD,452,63,FDD,07,54,76,EQWED PT,GGG,76,YYY CD,08,06,ASW,97,55,66,BT AB,96,87,KKK,03 PT,TIPWQ,19,YEQ PT,ROPRG,39,PRVM CD,08