Python create list combination

Python
I have a dictionary contain element and sequence count of element. I want to create a list of list that combined from these elements Example Input: ...
8 months ago

plotting two vectors of data on a GGPLOT2 scatter plot using R

R
I've been experimenting with both ggplot2 and lattice to graph panels of data. I'm having a little trouble wrapping my mind around the ggplot2 model. ...
8 months ago

Dynamic number of actionButtons tied to unique observeEvent

R
I'd like to generate a dynamic number of actionButtons, and then have each generated button print its number to the console. This is my best attempt s...
8 months ago

Load dataset from "R" package using data(), assign it directly to a variable?

R
How do you load a dataset from an R package using the data() function, and assign it directly to a variable without creating a duplicate copy in your ...
8 months ago

Zooreg frequency warning

R
Suppose I have the following set of data: date <- structure(c(1986, 1986.08333333333, 1986.16666666667), class = "yearmon") return <- structur...
8 months ago

How to communicate between two siblings components without changing state of parent?

React JSX
I am new to ReactJS and I faced the following problem - I have Parent component, and two child components - List and Map. Both of these has children i...
8 months ago

Using lapply to output values between date ranges within different factor levels

R
I have 2 dataframes, one representing daily sales figures of different stores (df1) and one representing when each store has been audited (df2). I nee...
8 months ago

firebase :: Cannot read property 'props' of null

React JSX
Hello i am trying to use react-router with firebase. but it gives me this error. Cannot read property 'props' of null this is exactly code, wher...
8 months ago

R xgboost importance plot with many features

R
I am trying out the Kaggle housing prices challenge : https://www.kaggle.com/c/house-prices-advanced-regression-techniques Here is the script I wrote...
8 months ago

For each row of dataframe check if duplicate values exist (R)

R
I have a dataframe that contains following values: URL Response.Code Count www.site.com/page1 200 4 www.site.com/page1...
8 months ago

SQL code in Rnw document with knitr

R
I used the following sql code in .Rmd document. However, I want to use the same sql code in .Rnw document. Would highly appreciate if someone guide me...
8 months ago

ruby: share class variable inheritance

Ruby
In my Rails application, I got a concern which is included within a base class. The base class is then inherited. The included module defines a class...
8 months ago

Parse unpleasant string in ruby to derive a condition

Ruby
I have a response string that gets returned from a webservice that isn't JSON exactly, nor any other kind of hashable object, I can serialize. I'm new...
8 months ago

How can I enforce compile-time constraints on values for Scala methods?

Scala
I want to enforce constraints the parameter values for Scala methods at compile-time. For example: case class Foo(numberOfFoo: Int, ...) numberOfF...
8 months ago

How to require the same parameter type between scala traits?

Scala
I am working on a web server to process a registration form and save it to a datastore. I want this to be a library and work with different instances ...
8 months ago

How to search max value from group in sql

SQL
I am just learning some SQL, so I have a question. -I have a table with name TABL -a variable :ccname which has a value "Bottle" The table is as fo...
8 months ago

How to use sql to find parent directoryId

SQL
I have some data in a giant table that looks like this: directoryId Length Directory 7788 631 Y:\Foo 3606 70246 Y:\Foo\Bar How can I u...
8 months ago

Ordering dates for 4 weeks

SQL
I am writing a SQL query that pulls some information for the last 4 weeks. I am seeing two issues with my results (see below). First problem is tha...
8 months ago

How to set custom Dialog Box when my App is crashed

Android
I'm using ACRA lib 4.9.0 in my app. I just want to show dialog box to the user when my app is crashed. I am trying to do this. public class App exte...
8 months ago

Open ImageView with Zoom and Scroll

Android
I would like to open an Image, in ImageView, from a button press. I need the image to be zoomable and scrollable. How would I best go about accomplish...
8 months ago