小编Emi*_*mil的帖子

我从GitHub分叉了一个Scala库,我想将它导入另一个项目.

我怎么能告诉sbt在哪里找到这个包？

例如,我正在编写一个程序~/code/scala/myProgram,我想从中导入一个库~/code/scala/otherlib.

使用这个答案的代码,我有

(defn repeat-image [n string]
  (println (apply str (repeat n string))))

(defn tile-image-across [x filename]
  (with-open [rdr (reader filename)]
    (doseq [line (line-seq rdr)]
      (repeat-image x line))))

...水平平铺ascii图像 现在,我怎么能"忽略"第一行？我这样做的原因是每个图像都有坐标(例如"20 63")作为第一行,我不需要该行.我尝试了一些方法(保持索引,模式匹配),但我的方法感觉做作.

我分叉了btce-scala,所以我可以在交易机器人上工作.我正在通过添加正常的sbt项目结构,制作build.sbt等来清理这个库:

~/code/scala/btce-scala) cat build.sbt
name := "btce-scala"

version := "0.1"

resolvers += "Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/"

scalaVersion := "2.10.3"

libraryDependencies ++= Seq(
    "net.liftweb" % "lift-json_2.9.1" % "2.6-M2",
    "org.specs2" %%  "specs2" % "2.3.8" % "test",
    "joda-time" % "joda-time" % "2.3",
    "org.joda" % "joda-convert" % "1.6",
    "commons-codec" % "commons-codec" % "1.9",
    "com.typesafe.play" % "play_2.2.2" % "2.2.2"
)

我的问题是我不确定如何导入最新版本的Play框架.我需要它才能使用play.api.libs.ws.WS.

~/code/scala/btce-scala   sbt run
[info] Set current project to btce-scala (in build file:/Users/bryangarza/code/scala/btce-scala/)
[info] Updating {file:/Users/bryangarza/code/scala/btce-scala/}btce-scala...
[info] Resolving com.typesafe.play#play_2.2.2;2.2.2 ...
[warn] …

出于某种原因,我从乘法函数中得到了奇怪的结果.这是该计划:

(ns scalc.core)

(defn add [numbers]
  (reduce + numbers))

(defn sub [numbers]
  (reduce - numbers))

(defn mul [numbers]
  (reduce * numbers))

(defn div [numbers]
  (reduce / numbers))

(defn numchoose []
  (let [nums (re-seq #"\d+" (read-line))]
    (map #(Float/parseFloat %) nums)))

(defn delegate []
  (println "What operation would you like to do?: ")
  (let [operation (read-line)]

    (when (= operation "add")
      (println "You chose to add.")
      (println "What numbers? ")
      (println (add (numchoose))))

    (when (= operation "mul")
      (println "You chose to multiply.")
      (println …