Introduction Moju-kapu （モジュカプ） is shorthand for modular encapsulation （モジュラーカプセル化）. It is a software design paradigm which emphasises the inherent balance in building effective stand-alone tools that together form entire integrated systems. It requ...

A surprise I came to write this post because I was surprised by its findings. The seed for it came from a somewhat obscure source: the Tokyo.R slack channel. This is actually a fairly vibrant R community. In any case, there was a post by an R user s...

Shikokuchuo Persistent http(s) sessions is a new feature added in nanonext 0.7.3. This allows for efficient polling by keeping an open connection with the server, transacting as and when needed. Provides an ideal, low-latency solution to request...

Shikokuchuo The previous two articles have centered on the main uses which led to the creation of Nanonext - the desire to bridge code written in different languages, as well as the ability to perform actions concurrently. This article aims to highlight the additional features that have been built around ...

Shikokuchuo {mirai} is a minimalist async evaluation framework for R. 未来 みらい mirai is Japanese for ‘future’. mirai provides an extremely simple and lightweight method for concurrent / parallel code execution. Since the original ‘introduction’ ar...

Shikokuchuo The nanonext package, featured in RStudio’s Top 40 New CRAN Packages for January 2022 has been steadily evolving, adding significant new features, with the aysnc ‘Aio’ interface now considered complete since release 0.3.0 hit CRAN ear...

Shikokuchuo {mirai} is a minimalist async evaluation framework for R, released this week to CRAN. 未来 みらい mirai is Japanese for ‘future’. It provides an extremely simple and lightweight method for concurrent / parallel code execution. Design Note...

Shikokuchuo {nanonext} is an R package available on CRAN which provides bindings to the C library NNG (Nanomsg Next Gen), a successor to ZeroMQ. Designed for performance and reliability, the NNG library is written in C and {nanonext} is a lightwe...

sha256 1 6019ae519a7e66506bedd541440c2eb115163b6e0ea4c2b77538bfd64639b669 Shikokuchuo Setup The R-hub solarischeck repository1, provides a full set of instructions by Gábor Csárdi for se...

sha256 1 010e16069f8858640c2bb9af4a2293b720161b71d9d6e1f375c30237ea2b4123 Shikokuchuo Reverting Local Git Commits You have made a commit. You discover an error / something you left out /...

sha256 1 478ec2042047eb285ec4d30177a825af0f8b106a38ac1faeb863c6c1c9df407f Shikokuchuo About ichimoku The ichimoku R package provides tools for creating and visualising Ichimoku Kinko Hyo...

sha256 1 eb5d71529ab540bc4865c181a1129e03186e0959c76196a9fbc0c2a16c767856 Shikokuchuo About as.data.frame data.frame() or as.data.frame() are such ubiquitous functions that we rarely thi...

sha256 1 96e41b3b0fa827b7c9c1f4a7765667064026f9448a78327415264112f7f54dbe Shikokuchuo Introduction It seems that there is no base R function to generate exhaustive combinations of two id...

sha256 1 2074954df14cc65b017b3e9d4b291353151672d450f2b623acc2a5d253767e42 Shikokuchuo Use case The use of the do.call / lapply combination is a powerful way to leverage functional progra...

sha256 1 9b787ca60956d571ad9686d55815fcff38fce9d550ccb1310c0b9c11dfa8069e Shikokuchuo An implementation in R of the Ichimoku Kinkō Hyō (一目均衡表) charting system, also commonly known as ‘cl...

sha256 1 db79682f8bee39d7ed9231200fd076ebed92a4471a9f3ce611d0a5a28bb984a3 Shikokuchuo Created using Distill This website was created using Distill for R Markdown, a web publishing format...

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Shikokuchuo Github Actions with R Set up a cron job to run your R scripts at specified times. Enabled with a simple yaml configuration file. Save the following as main.yml in .github/workflows of your Github repository:

name: Raction
on:
  schedule:
    - cron: '30 22 * * 1-5'
jobs:
  render:
    runs-on: windows-latest
    steps:
      - uses: actions/checkout@v2
      - name: Set up R
        uses: r-lib/actions/setup-r@v1
      - name: Install dependencies
        run: |
          install.packages(c("magrittr", "purrr"), type = "win.binary")
        shell: Rscript {0}
      - name: Script
        run: Rscript nameofscript.R
      - name: Commit files
        run: |
          git config --local user.name github-actions
          git config --local user.email "actions@github.com"
          git add output/*
          git commit -am "commit on $(date)"
          git push origin main
        env:
          REPO_KEY: ${{secrets.GITHUB_TOKEN}}
          username: github-actions

This example cron job runs every Mon-Fri at 22.30. Customize your ...

sha256 1 809e2e2a3967742faea6f9e11e0a4c533511f9710ac41812dcbcae3c78913cac Shikokuchuo Use case Whenever you need to programmatically drive a web browser. Most often: to scrape informati...