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douglascrockford
TDOP
HTML2014–2015
douglascrockford / TDOP

TDOP

Top Down Operator Precedence

Explore on GitHubRead Hacker News discussions
2Distinct people
2Mentions
0Explicit recommenders
157GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Top Down Operator Precedence

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by week2 dated mentions

Observed mentions: 2014-12-08 16:08:00 UTC to 2015-05-25 15:02:04 UTC. Weeks start Monday, UTC.

012014-12-08 00:00:00 UTC to 2014-12-15 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsDec 82014-12-15 00:00:00 UTC to 2014-12-22 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2014-12-22 00:00:00 UTC to 2014-12-29 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2014-12-29 00:00:00 UTC to 2015-01-05 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-01-05 00:00:00 UTC to 2015-01-12 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-01-12 00:00:00 UTC to 2015-01-19 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-01-19 00:00:00 UTC to 2015-01-26 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-01-26 00:00:00 UTC to 2015-02-02 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-02-02 00:00:00 UTC to 2015-02-09 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-02-09 00:00:00 UTC to 2015-02-16 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-02-16 00:00:00 UTC to 2015-02-23 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-02-23 00:00:00 UTC to 2015-03-02 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-03-02 00:00:00 UTC to 2015-03-09 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsMar 22015-03-09 00:00:00 UTC to 2015-03-16 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-03-16 00:00:00 UTC to 2015-03-23 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-03-23 00:00:00 UTC to 2015-03-30 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-03-30 00:00:00 UTC to 2015-04-06 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-04-06 00:00:00 UTC to 2015-04-13 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-04-13 00:00:00 UTC to 2015-04-20 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-04-20 00:00:00 UTC to 2015-04-27 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-04-27 00:00:00 UTC to 2015-05-04 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-05-04 00:00:00 UTC to 2015-05-11 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-05-11 00:00:00 UTC to 2015-05-18 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-05-18 00:00:00 UTC to 2015-05-25 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2015-05-25 00:00:00 UTC to 2015-06-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsMay 25

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Dec 82014-12-08 00:00:00 UTC2014-12-15 00:00:00 UTC101
Dec 152014-12-15 00:00:00 UTC2014-12-22 00:00:00 UTC000
Dec 222014-12-22 00:00:00 UTC2014-12-29 00:00:00 UTC000
Dec 292014-12-29 00:00:00 UTC2015-01-05 00:00:00 UTC000
Jan 52015-01-05 00:00:00 UTC2015-01-12 00:00:00 UTC000
Jan 122015-01-12 00:00:00 UTC2015-01-19 00:00:00 UTC000
Jan 192015-01-19 00:00:00 UTC2015-01-26 00:00:00 UTC000
Jan 262015-01-26 00:00:00 UTC2015-02-02 00:00:00 UTC000
Feb 22015-02-02 00:00:00 UTC2015-02-09 00:00:00 UTC000
Feb 92015-02-09 00:00:00 UTC2015-02-16 00:00:00 UTC000
Feb 162015-02-16 00:00:00 UTC2015-02-23 00:00:00 UTC000
Feb 232015-02-23 00:00:00 UTC2015-03-02 00:00:00 UTC000
Mar 22015-03-02 00:00:00 UTC2015-03-09 00:00:00 UTC000
Mar 92015-03-09 00:00:00 UTC2015-03-16 00:00:00 UTC000
Mar 162015-03-16 00:00:00 UTC2015-03-23 00:00:00 UTC000
Mar 232015-03-23 00:00:00 UTC2015-03-30 00:00:00 UTC000
Mar 302015-03-30 00:00:00 UTC2015-04-06 00:00:00 UTC000
Apr 62015-04-06 00:00:00 UTC2015-04-13 00:00:00 UTC000
Apr 132015-04-13 00:00:00 UTC2015-04-20 00:00:00 UTC000
Apr 202015-04-20 00:00:00 UTC2015-04-27 00:00:00 UTC000
Apr 272015-04-27 00:00:00 UTC2015-05-04 00:00:00 UTC000
May 42015-05-04 00:00:00 UTC2015-05-11 00:00:00 UTC000
May 112015-05-11 00:00:00 UTC2015-05-18 00:00:00 UTC000
May 182015-05-18 00:00:00 UTC2015-05-25 00:00:00 UTC000
May 252015-05-25 00:00:00 UTC2015-06-01 00:00:00 UTC101

What Hacker News says

2 sources
Udo·May 25, 2015
Worth noting is Doug Crockford's TDOP parser implementation in JavaScript, it's quite elegant: https://github.com/douglascrockford/TDOP/ As well as his accompanying talk, titled Syntaxation: https://www.youtube.com/watch?v=9e_oEE72d3U (sadly, the recording has gaps and is generally horrible; as far as I know he gave the talk only once). Crockford's talk led me to the original paper and together they really expanded my horizon on how to make maintainable parsing engines. Thanks for putting in the effort and making it more accessible!
In Top Down Operator Precedence (1973)

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