christroutner

SLP Indexing Review

Overview

This report was sponsored by an anonymous donor. I'd like to thank them for the generous contribution to the industry, the PSF, and to me.

The purpose of the report is to:

• Assess the current state of SLPDB and SLP indexing in the industry.
• Explore the costs of improving the indexer or creating a new one.

The SLPDB indexer gave rise to a prolific token economy on the Bitcoin Cash blockchain. eCash, a fork of Bitcoin Cash, also makes use of SLP tokens as well. Both ecosystems require a robust indexer in order to sustain their token economies.

rtfeldman

module GameState
    exposing
        ( Game(..)
        , GameDefinition
        , PlayState
        , loading
        , updateGameDefinition
        , updatePlayState
        , updateScore
        , toReady

siraben

module Nat exposing (..)

-- Example of inductively defined data type.
type Nat = O | S Nat

toNat : Int -> Nat
toNat n = case n of
            0  -> O
            sn -> S (toNat (sn - 1))

pablen

-- Somewhere in you Elm app you can add editor by adding an empty node with the correct attributes.
-- The JS library will be initialized and destroyed automatically!

view : Model -> Html Msg
view model =
    div []
        [ div
          [ attribute "data-ace" ""
          , attribute "data-ace-theme" "monokai"
          , attribute "data-ace-mode" "javascript"

garybernhardt

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

yang-wei

Should be work with 0.18

Destructuring(or pattern matching) is a way used to extract data from a data structure(tuple, list, record) that mirros the construction. Compare to other languages, Elm support much less destructuring but let's see what it got !

Tuple

myTuple = ("A", "B", "C")
myNestedTuple = ("A", "B", "C", ("X", "Y", "Z"))

mwise

To use this hook:

• add the prepare-commit-msg file at .git/hooks/prepare-commit-msg and edit as needed
• make it executable: chmod +x .git/hooks/prepare-commit-msg
• disable fast-forward merges: git config branch.master.mergeoptions "--no-ff"
• that's it!

NOTE: after a failed merge from a forbidden branch, the working tree will still be in a MERGING state. To discard the local working copy state, run: git reset --merge

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'