Tools
Jason Yang · 01 Dec, 2025
Fix the SecureCRT "Key exchange failed" error on Ubuntu 22.04. Learn how to enable compatible algorithms like curve25519-sha256 for a successful connection.
Programming Language
Jason Yang · 30 Nov, 2025
Pydantic vs dataclass: use Pydantic to validate incoming data, dataclasses for internal structures. Real examples and where each one breaks.
Cloud & DevOps
Jason Yang · 29 Nov, 2025
The OSI 7-layer model reference: each layer's function, protocols (HTTP, TCP/IP), PDUs, and devices in one table — great for CCNA and CompTIA prep.
Troubleshooting
Jason Yang · 29 Nov, 2025
Fix the ACPI BIOS Error when installing Ubuntu 22.04 on an ASUS GA502GU: bypass the install freeze with GRUB parameters and repair the bootloader after.
Coding Interview
Jason Yang · 29 Nov, 2025
Maximum Subarray (LeetCode 53): Kadane's algorithm explained as one decision — extend or restart — plus the O(n) to O(1) space drop and a full worked trace.
