Technical Feeder

Git How to update all repos in a directory

Are there many git repositories to update? This post is for you if you don't want to change the directory and git pull many times. Let's update them at once with find and xargs commands.

2023.03.13

Other techs

Flutter How to delete a row on DataTable by Delete button

When showing data on DataTable, we might want to have a feature that deletes selected rows by pressing a Delete key. How is it possible? Use KeyboardListener.I will show you where to put the widget and how to use it in this post.

2023.03.10

Dart and Flutter

Linux How to rename multiple files at once

I want to rename multiple files in the same directory at once with index. How can I do it on Linux? Let's combine use for-loop and ls command. Then, rename it in the loop.

2023.03.08

Other techs

Golang How to convert string to float, int

Do you want a cheat sheet to know how to convert value to another data type? This article covers what you want.

2023.03.06

Golang

Python Use lambda to create a function for simple logic

Using lambda is a good choice if a function requires a callback parameter and the logic in the callback is quite simple. Let's learn how to use it if you don't know it.

2023.03.03

Python

Python 4 ways to remove duplicates from an object list

Do you need to remove duplicates from a list? This post covers not only a literal list but also an object list. If it's an object list, it's harder to remove duplicates than the literal version. Let's check how to implement it!

2023.03.01

Python

Spread operator in Python? How to unpack list/dict

How can we write if we want to unpack a list in Python? Is there something like spread operator used in JavaScript? Yes. Use an asterisk to unpack the list. Use double asterisk for dict type. Let's look at the examples.

2023.02.27

Python

Python How to filter object list

Why doesn't Python provide a method to filter a list? It provides filter class instead. You can use it to filter a list/dict. You can also use basic for-loop to do the same thing. Let's learn how to filter a list in this post!

2023.02.24

Python

Python How to create multiple Threads for async

To make multiple tasks asynchronously, it's necessary to know how to create threads in Python. This post shows how to do it.

2023.02.22

Python

Golang Improper package structure exports unneeded members

Do you want to write unit tests for methods but don't want to expose them to outside of the package? Then, move the methods to internal package. The functions defined in internal package are not exposed. Let's learn how to use it.

2023.02.20

Golang