Frank inDev.

lifelong journey with

understanding and presenting

Thu, Dec 14, 2017
In-place swap

by Frank Lin

In-place swap

In-place swap is just a logic trick used to swap a content of two distinct variables without any temporary storage variable.

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Tue, Nov 28, 2017
Testing dialog in shell scripts

by Frank Lin

Testing dialog in shell scripts

Dialog is an utility for creating professional-looking dialog boxes within shell scripts, this article just follow the tutorial and present the examples of how and where it can be used.

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Mon, Nov 06, 2017
Bootstrap cards for showing colors

by Frank Lin

Bootstrap cards for showing colors

A few days ago, I built a website for showing traditional Chinese colors with bootstrap cards. Several issues I encountered during this process, just write them down for records.

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Mon, Oct 30, 2017
Query Yahoo finance historical data via python requests

by Frank Lin

Query Yahoo finance historical data via python requests

It is said Yahoo finance closed the historical data api on May 18th 2017, but we can still download the data from the webpage. Here showing the way to download data using python request.

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Thu, Oct 26, 2017
Upgrade Ruby to the lastest version on Mac OSX with Homebrew

by Frank Lin

Upgrade Ruby to the lastest version on Mac OSX with Homebrew

Recently when installing some gems, it popped out errors that telling the Ruby version is lower than required... I have to upgrade the shipped Ruby, version 2.0.0p648 (2015-12-16 revision 53162), on my machine. There are a few methods dealing with this, but I found the easiest way is using Homebrew.

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Sun, May 21, 2017
Build a personal Markdown notebook with Firebase Storage

by Frank Lin

Build a personal Markdown notebook with Firebase Storage

Just make the Markdown notebook on the cloud. Build for personal use.

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Mon, Apr 24, 2017
Common sorting algorithms, understand and implemention in C

by Frank Lin

Common sorting algorithms, understand and implemention in C

Understand the common sorting algorithms, just because recent take CS50 course.

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