How to aggregate data in Spark using Scala?
| Scala |
https://codedump.io/share/JZJlqwc4c2kE
|
I have a data set test1.txt. It contain data like below
2::1::3
1::1::2
1::2::2
2::1::5
2::1::4
3::1::2
3::1::1
3::2::2
I have created data-frame u...
11 months ago
Idiomatic way of If none return false?
| Scala |
https://codedump.io/share/L5G4Dow95XhH
|
The java library I am dealing with, returns null on errors. Is there an Idiomatic way of saying:
val x:Option[T]
if(x.isEmpty)
false
else
x.get.is...
11 months ago
Map over CompactBuffer in an rdd
| Scala |
https://codedump.io/share/QPxQi52itMWq
|
I have an RDD which was groupByKey as below,
(1, CompactBuffer(2.0, 3.0, 4.0)),
(2, CompactBuffer(1.0, -1.0, -2.0))
And I wish to mapValues into (1...
11 months ago
Compress a Given Text of String in Scala
| Scala |
https://codedump.io/share/3iVEKfZN9j3E
|
I have been trying to compress a String. Given a String like this:
AAABBCAADEEFF, I would need to compress it like 3A2B1C2A1D2E2F
I was able to come...
11 months ago
Angular 1.0.7: Https api call in $resource
I have an Angular1.0.7 webapp that is making calls to an rails API listening in an specific port. We want to migrate to HTTPS protocol for security re...
11 months ago
How to Sum a part of a list in RDD
| Scala |
https://codedump.io/share/wETuFPFU55Za
|
I have an RDD, and I would like to sum a part of the list.
(key, element2 + element3)
(1, List(2.0, 3.0, 4.0, 5.0)), (2, List(1.0, -1.0, -2.0, -3.0)...
11 months ago
How does pass-by-reference work?
| Pascal |
https://codedump.io/share/8d4XZqUie5la
|
Pass-by-reference is easy to visualize with languages that use pointers mostly. But in Pascal, I can hardly see how the pointers pass around subroutin...
11 months ago
Hybris Create Web Service with Intellij
I'm really new in Hybris. I have Hybris commerce 6.4 and im working with Intellij.
Can anybody tell me how to create a web service rest?
I need th...
11 months ago
Show foreign key in DJANGO REST
My first question here. Glad to be part of this community.
My question: I'm using python3 and the django rest framework to create an API.
I have the ...
11 months ago
Probabilities of events grouped by their outcome
| R |
https://codedump.io/share/tHkTEjlwB6lp
|
Say there are $n$ independent events. Each has a probability $p_n$ and an associated loss $l_n$. My goal is to produce a list of all possible loss amo...
11 months ago
For loop returns last result
| R |
https://codedump.io/share/W6knzWoRTl09
|
I have a small number of csv files, each containing two columns with numeric values. I want to write a for loop that reads the files, sums the columns...
11 months ago