http://yiufung.net/ Recent content on My portion Hugo -- gohugo.io zh_HK Sun, 12 Jan 2020 18:24:00 +0800 http://yiufung.net/post/anki-org/ Sun, 12 Jan 2020 18:24:00 +0800 http://yiufung.net/post/anki-org/ It’s been a while since the last post, one reason is that for the past few months I’ve been drawn to Anki, the spaced-repetition flashcard program. If you haven’t checked it out yet, I strongly recommended it. (Why? Read Michael Nielson’s article) One question recurred among Anki community is how to generate cards quickly. 3 approaches are common: Use Anki’s “Import” function to read csv/tsv Write Python scripts with genanki that generate . http://yiufung.net/about/ Sat, 01 Jun 2019 13:40:45 +0800 http://yiufung.net/about/ My name is Cheong Yiufung. I’m a data scientist based in Hong Kong. Here I post some of my thoughts. You may reach me via mail at yiufung.net. http://yiufung.net/post/org-mode-hidden-gems-pt4/ Thu, 30 May 2019 18:29:00 +0800 http://yiufung.net/post/org-mode-hidden-gems-pt4/ Use TODO keywords as types Turns out there are 2 interpretations of TODO keywords: sequence and type. The more commonly used one, sequence, cycles through keywords one by one with org-todo (C-c C-t) (except when fast access is assigned in the form of TODO(t)). The type interpretation, as the name suggests, regards each keyword as independent type. When org-todo, keyword will jump directly to DONE state. That’s the only difference. http://yiufung.net/post/org-mode-hidden-gems-pt3/ Tue, 14 May 2019 00:28:00 +0800 http://yiufung.net/post/org-mode-hidden-gems-pt3/ Internal Link Summary Previously I seldom used anything other than URLs, and this chapter taught me more on Internal Link. Several things are summarized in the video: Use # to locate heading with same CUSTOM_ID Plain text link [[textlink]] will follow below priority: Dedicated target (double angular brackets) Org element (table, list, etc w/ #+NAME) Heading with exact same text Radio Target (triple angular brackets): automatic links I find Radio Target most interesting. http://yiufung.net/post/org-mode-hidden-gems-pt2/ Sat, 11 May 2019 18:00:00 +0800 http://yiufung.net/post/org-mode-hidden-gems-pt2/ Region operations on cells Excel-like copy-pasting: C-c C-x M-w(copy)/C-w(cut)/C-y(paste). Create table from region Bound to C-c |, org-table-create-or-convert-from-region converts semi-formatted texts (esp. those copied from web) into Org table. This command rely on detecting delimiter TAB or comma in region. If conversion fails, check any minor modes or settings that may turn TAB character into space in the background. In my case, it’s whitespace-cleanup-mode. This can get tricky if enabled along with auto-save-mode, as copied text might be auto-saved and TABs stripped before conversion. http://yiufung.net/post/org-mode-hidden-gems-pt1/ Fri, 10 May 2019 11:25:00 +0800 http://yiufung.net/post/org-mode-hidden-gems-pt1/ Recently I started to read Org mode manual, and it surprises me there are so many useful options/commands/functionalities I wasn’t aware of even after using it daily for the past year, so I’d like to share some of the findings here. Each section is accompanied with a short demo video. Settings are based on my preference, but as the old saying goes, “a man’s Emacs is his own castle”, so do customize it for your own good. http://yiufung.net/post/pure-emacs-lisp-init-skeleton/ Fri, 19 Apr 2019 15:39:00 +0800 http://yiufung.net/post/pure-emacs-lisp-init-skeleton/ Last year I rewrote my configuration from scratch as I migrated from Spacemacs to vanilla Emacs. For config style, I chose Org Babel - which normally involves using a short Lisp file (init.el) to tangle and load actual config in Org mode (config.org) - for its readability and easy navigation. After a while, however, I find it not as handy as expected: At least 2 files are to be maintained, which adds unnecessary complexity config. http://yiufung.net/post/emacs-key-binding-conventions-and-why-you-should-try-it/ Fri, 14 Dec 2018 22:08:00 +0800 http://yiufung.net/post/emacs-key-binding-conventions-and-why-you-should-try-it/ This post describes my method to learn Emacs native keybindings from an ex-Vimmer’s perspective. It’s an extension from a Reddit post. Evil-mode journey My Emacs journey started with Spacemacs. At that time, I had the misconception that Emacs has lengthy and incomprehensible keybindings, so without a second thought, I chose to go with Vim-bindings, which I used for 6 years and even read a book about. Spacemacs is surely a great project, opening up all the goodies of Emacs to a Vimmer.