Mangle 
to injure severely, disfigure, or mutilate by cutting, slashing, or crushing
Attempt at a streaming lib
Examples
- Simple playing around
import
mangle
infinity()
.drop(1337)
.mapIt(it * it)
.filterIt(it %% 2 == 0)
.take(9999)
.concat(infinity()
.drop(2000)
.mapIt(it * 2)
.take(42))
.unique
.reduceIt(0, acc + it)
.echo # 1618153964826- Downloading football and hockey information and concatenating it
import
httpclient,
json,
mangle,
strutils
proc getTeamData(api: string): auto =
api.getContent.parseJson
proc getFootballTeams(): auto =
proc get(node: JsonNode, key: string): JsonNode = node[key] # This should really be in the json module
getTeamData("http://api.football-data.org/v1/soccerseasons/351/teams")
.get("teams")
.getElems
.mangle
.mapIt((
id: it["code"],
name: it["shortName"]))
proc getIcehockeyTeams(): auto =
const api = "http://www.nicetimeonice.com/api/teams"
api.getTeamData
.getElems
.mangle
.mapIt((
id: it["teamID"].getStr,
name: it["name"].getStr,
seasons: (api & "/" & it["teamID"].getStr & "/seasons")
.getContent
.parseJson
.getElems
.mangle
.mapIt(it["seasonID"].getStr)
.collect
.join(", ")))
# Make a lazy generator of team names
var idGenerator = infinity()
.drop(1)
.mapIt("Teams " & $it)
# Combine football and hockey
zip(getFootballTeams(), getIcehockeyTeams())
.mapIt((
id: idGenerator.invoke,
football: it[0],
hockey: it[1]))
.eachIt(it.echo)
# Echoes:
# (id: Teams 1, football: (id: "FCB", name: "Bayern"), hockey: (id: ANA, name: Anaheim Ducks, seasons: 20112012, 20122013, 20132014, 20142015))
# (id: Teams 2, football: (id: "WOB", name: "Wolfsburg"), hockey: (id: ARI, name: Arizona Coyotes, seasons: 20112012, 20122013, 20132014, 20142015))
# (id: Teams 3, football: (id: "SGE", name: "Eintr. Frankfurt"), hockey: (id: BOS, name: Boston Bruins, seasons: 20112012, 20122013, 20132014, 20142015))
# ...