Tuesday, January 31, 2023

Show HN: My kids interviewed Vint Cerf – this is what he said https://ift.tt/BcTHbsS

Show HN: My kids interviewed Vint Cerf – this is what he said https://www.youtube.com/watch?v=YNU71T1T1Zw January 31, 2023 at 10:57AM

Show HN: LangChain Tracing https://ift.tt/G5RczXe

Show HN: LangChain Tracing Something we've been working on for the past few weeks - an easy way to visualize, debug, and explore the execution trace of LangChain agents and chains https://ift.tt/A1tWbpQ January 30, 2023 at 08:24PM

Show HN: I built a bond screener where you can search over 120k instruments https://ift.tt/BXjOwtb

Show HN: I built a bond screener where you can search over 120k instruments https://ift.tt/Hp9ayqw January 31, 2023 at 03:00AM

A Day in History: Market Street Subway Milestone

A Day in History: Market Street Subway Milestone
By Jeremy Menzies

Forty-five years ago on January 31, 1978, San Francisco Muni and city officials along with members of the press took an inaugural ride in the brand new Market Street Subway from Castro Station to Embarcadero.

black and white image of Muni LRV on L Taraval Line waiting at platform inside Embarcadero Station

The inaugural run traveled roughly three miles from Castro Station to Embarcadero Station.

The three-mile-long Market Street Subway forms the backbone of the Muni Metro system. Built alongside the BART tunnel which runs below, the subway provided faster service through downtown for local and regional travelers.

black and white photo of Mayor George Moscone seated at controls of Muni LRV with SFPUC Commissioner Claire Pilcher standing

San Francisco Mayor George Moscone and Public Utilities Commissioner Claire Pilcher pose for a photo in the operator’s compartment of one of Muni’s first light rail vehicles.

In development for 50 years and under construction for another ten, the Market Street Subway took longer to implement than any other transit project before or after.

black adnw hite photo looking down to platform at Embarcadero Station to crowd of people next to LRV and speaking podium

A large crowd of people and press came out for the ride and press conference at Embarcadero Station.

At the time of this event, San Francisco’s main transit tunnel was the Twin Peaks Tunnel, which opened in 1918. The Twin Peaks Tunnel shuttled people on the K, L, and M Lines from the Castro to West Portal, decreasing travel time from the southwest side of town significantly. Streetcars exited the tunnel at Castro Street and travel along Market to downtown. This trip along the busiest street in the city frequently negated any travel time savings in the tunnel.

black and white photo of Mayor George Moscone cutting ribbon with scissors

Capping off the celebration was a ribbon cutting led by Mayor Moscone.

With the Market Street Subway linked to the Twin Peaks Tunnel, Muni began a new era of rail service using Light Rail Vehicles. Designed to increase capacity, LRVs could run on the surface then enter the subway and travel unimpeded by street traffic five miles from downtown to West Portal and back. This first train ride and ribbon cutting marked the end of a long wait and the beginning of a new subway system for San Francisco.



Published January 31, 2023 at 03:50AM
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Show HN: Merit – Career mentorship for tech workers https://ift.tt/Bs9SigZ

Show HN: Merit – Career mentorship for tech workers Hello Hacker News! I built a free service where you can schedule 1:1 video mentorship calls with senior ICs and managers in software engineering, product management, and design. The goal is to remove barriers to building a professional network that can help you grow your career like building skills and getting referrals. Right now we’re limited to folks living or working in the US or Canada, but we’re working on expanding beyond that one day. Without logging in, you can browse mentors here: https://ift.tt/VErYbiP Between tech layoffs, hybrid work, and an uncertain industry outlook, I hope this can be a useful resource for you or someone you know, especially if you do not have a large professional network. I would love to hear your feedback! https://ift.tt/KulnehX January 31, 2023 at 02:27AM

Show HN: Chromium running inside your terminal https://ift.tt/L5y3VGA

Show HN: Chromium running inside your terminal https://ift.tt/a32rO5x January 30, 2023 at 11:11PM

Monday, January 30, 2023

Show HN: A parser and browser for the recently published Lisa Source Code https://ift.tt/c72gH41

Show HN: A parser and browser for the recently published Lisa Source Code https://ift.tt/uAEIbBl January 30, 2023 at 07:24AM

Show HN: Pocket2Linkding – Migrate from Mozilla Pocket to Linkding https://ift.tt/IwYJfju

Show HN: Pocket2Linkding – Migrate from Mozilla Pocket to Linkding With the Mozilla Pocket shutdown coming up in about two weeks, I thought ...