syntax - Usage of "red in |- *": What does bar hyphen star mean? -


in lot of coq code, in the definition of sets in standard library, i've seen sort of notation:

 red in |- *.

what |-* (bar-hyphen-star) mean?

my searching hasn't turned results, it's hard search punctuation, please excuse me if duplicate!

it's called occurrence clause ,

the role of occurrence clause select set of occurrences of term in goal.

i'd add "to tactic going applied" above quote (the coq reference manual, sect. 8.1.4).

then manual proceeds following:

if * mentioned on right of |-, occurrences of conclusion of goal have selected.

let's @ simple cases:

  • <tactic> in * |-. applies <tactic> every hypothesis, not current goal.

  • <tactic> in h1, h2 |- *. applies <tactic> hypotheses h1 , h2 and goal.

  • <tactic> in * |- *. applies <tactic> everywhere. there shortcut case: <tactic> in *.

for many tactics <tactic> in |- *. equivalent <tactic>. if, example, delete occurrences of in |- * linked file still compile.


Comments

Post a Comment

Popular posts from this blog

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more