json.encode Problem in a Lua Scene

[muc 1]

json.encode Problem in a Lua Scene, HC2, 4.540

 

I can't understand why a table is encoded in two different ways.
Who can explain it?

 

szenen= api.get("/scenes")
for nn= 78, 81 do
  tId= {}
  for j= 1, nn do
    d= szenen[j]
    tId[d.id]= d.name
  end
  print("- - - - - - -", nn, "von", #szenen, "Szenen")
  stId= json.encode(tId)
  print(stId)
end

 

Debug window shows:

 

[DEBUG] 21:15:08: - - - - - - - 78 von 124 Szenen
[DEBUG] 21:15:08: {"13":"rechnen u.s.w.","15":"ThermoDirekt","17":"Sensor2Tasten","19":"Waschmaschine","20":"VdBt01","21":"WasserSensor","22":"DatumZeit TEST","25":"DatumZeit","31":"Dienste","32":"TempDiaZeit","33":"SonneAufUntBt","35":"-testen-","37":"SchaltUKontr2","43":"FBoxCall_os680","45":"Sensor1","49":"Sensor2Temp","53":"SonnenZeiten","55":"Schalter4x","56":"WaschEmailSms","57":"C","62":"FensterD","63":"SchaltuhrBt","65":"SchaltuhrParamBt","66":"SchreibeDatei","67":"HellAnzeige","68":"OAnzRelais","69":"OAnzSzenen","70":"Schaltuhr","72":"TestSzene1","73":"TestSzene2","74":"TestSzene3","75":"HellMWAufz","78":"SchalterXBt","79":"Helligkeit","81":"HellRaspberry","82":"KastlNotizen","84":"FensterD2","85":"SignalRoderTel","86":"TerrBewK10","87":"InfoHeizKastl--","88":"TerrBewX10","89":"KastlSchalter","90":"EingangAus","91":"TastenFolge","92":"TerrZusEmailSms","93":"ThermostateHTBt","94":"net.HTTPClient","95":"DimmerParamBt","96":"DimmerAenderung","97":"ntp","98":"apigetput","99":"SensorG","100":"SensorGTemp","101":"SensorGParamBt","102":"TemperaturEinstBt","103":"TerrBewAnz","104":"KTuer","105":"SchaltUKontr1","106":"FBoxCall","107":"TerrBew","108":"TerrBewBt","109":"TerrLichtAus","110":"TerrZusatz","111":"TerrZusatzAus","112":"SensorGSenden","113":"StarteSzeneZeit","114":"StartoAe","116":"SensorGIntZ","117":"SensorGInt","118":"SensorGIntM","119":"WaschZusatz","120":"WaschAufz","121":"SendeEmail","122":"Stromzange","123":"StarteSzene","124":"StromzangeAufz","125":"RaspiGVar","126":"Raspi"}
[DEBUG] 21:15:08: - - - - - - - 79 von 124 Szenen
[DEBUG] 21:15:08: {"13":"rechnen u.s.w.","15":"ThermoDirekt","17":"Sensor2Tasten","19":"Waschmaschine","20":"VdBt01","21":"WasserSensor","22":"DatumZeit TEST","25":"DatumZeit","31":"Dienste","32":"TempDiaZeit","33":"SonneAufUntBt","35":"-testen-","37":"SchaltUKontr2","43":"FBoxCall_os680","45":"Sensor1","49":"Sensor2Temp","53":"SonnenZeiten","55":"Schalter4x","56":"WaschEmailSms","57":"C","62":"FensterD","63":"SchaltuhrBt","65":"SchaltuhrParamBt","66":"SchreibeDatei","67":"HellAnzeige","68":"OAnzRelais","69":"OAnzSzenen","70":"Schaltuhr","72":"TestSzene1","73":"TestSzene2","74":"TestSzene3","75":"HellMWAufz","78":"SchalterXBt","79":"Helligkeit","81":"HellRaspberry","82":"KastlNotizen","84":"FensterD2","85":"SignalRoderTel","86":"TerrBewK10","87":"InfoHeizKastl--","88":"TerrBewX10","89":"KastlSchalter","90":"EingangAus","91":"TastenFolge","92":"TerrZusEmailSms","93":"ThermostateHTBt","94":"net.HTTPClient","95":"DimmerParamBt","96":"DimmerAenderung","97":"ntp","98":"apigetput","99":"SensorG","100":"SensorGTemp","101":"SensorGParamBt","102":"TemperaturEinstBt","103":"TerrBewAnz","104":"KTuer","105":"SchaltUKontr1","106":"FBoxCall","107":"TerrBew","108":"TerrBewBt","109":"TerrLichtAus","110":"TerrZusatz","111":"TerrZusatzAus","112":"SensorGSenden","113":"StarteSzeneZeit","114":"StartoAe","116":"SensorGIntZ","117":"SensorGInt","118":"SensorGIntM","119":"WaschZusatz","120":"WaschAufz","121":"SendeEmail","122":"Stromzange","123":"StarteSzene","124":"StromzangeAufz","125":"RaspiGVar","126":"Raspi","127":"RaspiArgs"}
[DEBUG] 21:15:08: - - - - - - - 80 von 124 Szenen
[DEBUG] 21:15:08: [null,null,null,null,null,null,null,null,null,null,null,null,"rechnen u.s.w.",null,"ThermoDirekt",null,"Sensor2Tasten",null,"Waschmaschine","VdBt01","WasserSensor","DatumZeit TEST",null,null,"DatumZeit",null,null,null,null,null,"Dienste","TempDiaZeit","SonneAufUntBt",null,"-testen-",null,"SchaltUKontr2",null,null,null,null,null,"FBoxCall_os680",null,"Sensor1",null,null,null,"Sensor2Temp",null,null,null,"SonnenZeiten",null,"Schalter4x","WaschEmailSms","C",null,null,null,null,"FensterD","SchaltuhrBt",null,"SchaltuhrParamBt","SchreibeDatei","HellAnzeige","OAnzRelais","OAnzSzenen","Schaltuhr",null,"TestSzene1","TestSzene2","TestSzene3","HellMWAufz",null,null,"SchalterXBt","Helligkeit",null,"HellRaspberry","KastlNotizen",null,"FensterD2","SignalRoderTel","TerrBewK10","InfoHeizKastl--","TerrBewX10","KastlSchalter","EingangAus","TastenFolge","TerrZusEmailSms","ThermostateHTBt","net.HTTPClient","DimmerParamBt","DimmerAenderung","ntp","apigetput","SensorG","SensorGTemp","SensorGParamBt","TemperaturEinstBt","TerrBewAnz","KTuer","SchaltUKontr1","FBoxCall","TerrBew","TerrBewBt","TerrLichtAus","TerrZusatz","TerrZusatzAus","SensorGSenden","StarteSzeneZeit","StartoAe",null,"SensorGIntZ","SensorGInt","SensorGIntM","WaschZusatz","WaschAufz","SendeEmail","Stromzange","StarteSzene","StromzangeAufz","RaspiGVar","Raspi","RaspiArgs","RaspiTafel"]
[DEBUG] 21:15:08: - - - - - - - 81 von 124 Szenen
[DEBUG] 21:15:08: [null,null,null,null,null,null,null,null,null,null,null,null,"rechnen u.s.w.",null,"ThermoDirekt",null,"Sensor2Tasten",null,"Waschmaschine","VdBt01","WasserSensor","DatumZeit TEST",null,null,"DatumZeit",null,null,null,null,null,"Dienste","TempDiaZeit","SonneAufUntBt",null,"-testen-",null,"SchaltUKontr2",null,null,null,null,null,"FBoxCall_os680",null,"Sensor1",null,null,null,"Sensor2Temp",null,null,null,"SonnenZeiten",null,"Schalter4x","WaschEmailSms","C",null,null,null,null,"FensterD","SchaltuhrBt",null,"SchaltuhrParamBt","SchreibeDatei","HellAnzeige","OAnzRelais","OAnzSzenen","Schaltuhr",null,"TestSzene1","TestSzene2","TestSzene3","HellMWAufz",null,null,"SchalterXBt","Helligkeit",null,"HellRaspberry","KastlNotizen",null,"FensterD2","SignalRoderTel","TerrBewK10","InfoHeizKastl--","TerrBewX10","KastlSchalter","EingangAus","TastenFolge","TerrZusEmailSms","ThermostateHTBt","net.HTTPClient","DimmerParamBt","DimmerAenderung","ntp","apigetput","SensorG","SensorGTemp","SensorGParamBt","TemperaturEinstBt","TerrBewAnz","KTuer","SchaltUKontr1","FBoxCall","TerrBew","TerrBewBt","TerrLichtAus","TerrZusatz","TerrZusatzAus","SensorGSenden","StarteSzeneZeit","StartoAe",null,"SensorGIntZ","SensorGInt","SensorGIntM","WaschZusatz","WaschAufz","SendeEmail","Stromzange","StarteSzene","StromzangeAufz","RaspiGVar","Raspi","RaspiArgs","RaspiTafel","B"]

 

The second way [null,null,...] was a real surprise, first detected with 4.540.
(What is the difference between 79 and 80?)

 

Thanks in advance

 

[jgab 2,642]

On 4/27/2019 at 9:50 PM, muc said:

json.encode Problem in a Lua Scene, HC2, 4.540

 

I can't understand why a table is encoded in two different ways.
Who can explain it?

 

szenen= api.get("/scenes")
for nn= 78, 81 do
  tId= {}
  for j= 1, nn do
    d= szenen[j]
    tId[d.id]= d.name
  end
  print("- - - - - - -", nn, "von", #szenen, "Szenen")
  stId= json.encode(tId)
  print(stId)
end

The second way [null,null,...] was a real surprise, first detected with 4.540.
(What is the difference between 79 and 80?)

 

Thanks in advance

 

 

You are storing strings as values with consecutive numbers as keys. If keys are numbers and consecutive, Lua can decide to store the values in an array, with holes...

Somehow when you store 80+ values, Lua decides that it's more efficient to make an array out of it.

I can't reproduce your output but if you have a string as key I'm quite sure you won't have the problem. 

tId[tostring(d.id)]= d.name

Edited May 9, 2019 by jgab