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A::B is a system with 4 tokens: `A#`, `#A`, `B#` and `#B`.
An A::B program is a sequence of tokens. Example:
B# A# #B #A B#
To *compute* a program, we must rewrite neighbor tokens, using the rules:
A# #A ... becomes ... nothing
A# #B ... becomes ... #B A#
# pretty sudo prompt
read -r -d '' SUDOPROMPT << EOM
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@xola139
xola139 / Invalid Host Header NGROK
Created February 19, 2018 19:17
When Invalid Host Header when ngrok tries to connect to Angular or React dev server
When Invalid Host Header when ngrok tries to connect to Angular or React dev server use this form for run ngrok.
ngrok http 8080 -host-header="localhost:8080"
ngrok http --host-header=rewrite 8080
@sharmaeklavya2
sharmaeklavya2 / cp_syllabus.md
Last active March 10, 2026 19:19
Competitive Programming Syllabus

Competitive Programming Syllabus

Geometry

  • Problems - Refer the article for a list of problems which can be solved using Rotating Calipers technique.
@amyjko
amyjko / cer.md
Last active December 16, 2020 19:14
@adamfeuer
adamfeuer / D3JS Tree Editor.md
Last active May 8, 2025 05:19
d3js tree editor with node create, delete, and rename
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