chaojian-zhang

• Convert images to video: ffmpeg -framerate 4 -start_number 51 -i _DSC12%d.jpg -c:v libx264 -r 4 output.mp4 (Recommendataion) Use Screen2Gif's editor instead.
• Convert video into gif
• Convert video into image sequence:
• Crop video: ffmpeg -i in.mp4 -vf crop=w:h:x:y out.mp4
• Change video frame rate:
• Scale video resolution: ffmpeg -i input.avi -vf scale=320:240 output.avi
• Scaleing while keeping aspect ratio: ffmpeg -i input.jpg -vf scale=320:-1 output_320.png
• Scale images: ffmpeg -i input.jpg -vf scale=320:240 output_320x240.png
• Multiple filters (separate using comma): ffmpeg -i 1.mp4 -vf "crop=720:720:264:0, scale=320:-1" 1.gif
• Trim/Cut video: ffmpeg -i input.mp4 -ss 00:05:20 -t 00:10:00 -c:v copy -c:a copy output1.mp4

chaojian-zhang

VirtualBox: https://www.virtualbox.org/

Debian 11 Image:

chaojian-zhang

int main()
{
    int a = 5;
    int* b = &a;
    int c[] = {1, 2, 3, 4, 5};
    return 0;
}

chaojian-zhang

• Put general language/usage notes here.

Snippets

• Put Snippets here.

Print value of Pi to Any Number of Accuracy

chaojian-zhang

Assume VS 2019 style shortcut preset.

• (Feature) Ctrl+T for Search Everywhere for symbols and definitions, which is different from Search from Files (Ctrl+Shift+F);
• (Code Navigation) Alt+Shift+L: Navigate to file in solution explorer;

chaojian-zhang

Visual Studio Shortcuts

Navigation

• Ctrl+-: Go to last cursor location (navigate back); Same effect if one has "Navigate back" mouse button;
• Alt+F12: Peek definition; Press again to peek declaration;
• Ctrl+K, O: Switch between header and cpp file;
• Ctrl+K, R: Find all references;
• Alt+*: Go (back to) current debug line;
• F9: Toggle breakpoint

chaojian-zhang

1. Minecraft Java Edition - E.g. 1.17
2. Forge - E.g. 1.17
3. OptiFine - E.g. 1.17
4. Download shaders (.zip) to put inside OptiFine folder: https://wiki.shaderlabs.org/wiki/Shaderpacks

chaojian-zhang

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s test

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Overview - Dwarf Fortress Play Notes

Notes for Dwarf Fortress, reminders of some things I tend to forget.

We play with Vanilla! It lacks the sound effect and Dwarf Therapist but is otherwise most integrated, feels natural, and had little distraction.

Git Dwarf Fortress Play Notes.

General Indexed Notes

chaojian-zhang

Basics

• docker run --name <your_container_name> alpine/git <git_command>
• docker run -it --name <your_container_name> alpine/git <git_command>: Run with tty interactive
• docker run -d --name couch -p 8091-8094:8091-8094 -p 11210:11210 couchbase: Run (e.g. a server) unattached
• docker cp container_name:/git/getting-started .: Copy files/folders between a container and the local filesystem
• docker start <your_container_name>: Start a stopped container
• docker attach <your_container_name>: Attach to running container