小编cie*_*bor的帖子

a = [1, 2, 3]
a.each do |x| x+=10 end

在此操作之后,阵列a仍然是[1, 2, 3].如何将其转换为[11, 12, 13]？

我想制作几个面板的窗口.我可以将一个附加到MainFrame的内容:import swing._

class View(model:Model) extends MainFrame {
  title = "app"

  val parameters = new FlowPanel() {
    contents += new Label("Tempo: ")
    contents += new ComboBox(Seq("80", "100", "120", "140"))
    contents += new Label("Metric: ")
    contents += new Label("Note: ")
  }

  contents = parameters
}

但是当我试图追加另一个时:

    class View(model:Model) extends MainFrame {
      title = "app"

      val parameters = new FlowPanel() {
        contents += new Label("Tempo: ")
        contents += new ComboBox(Seq("80", "100", "120", "140"))
        contents += new Label("Metric: ")
        contents += new Label("Note: ") …

这是我的代码(几乎完整版@cdhowie :)):

def getResult(method, argument=None):
  result = None

  while True:
    print('### loop')
    try:
      print ('### try hard...')
      if argument:
        result = method(argument)
      else:
        result = method()
      break
    except Exception as e:
      print('### GithubException')
      if 403 == e.status:
        print('Warning: ' + str(e.data))
        print('I will try again after 10 minutes...')
      else:
        raise e

  return result

def getUsernames(locations, gh):
  usernames = set()

  for location in locations:
    print location
    result = getResult(gh.legacy_search_users, location)
    for user in result:
      usernames.add(user.login)
      print user.login,

  return usernames

# "main.py" …

我有这样的dir层次结构:

src
src/Model
src/View
src/Controller

现在我想构建我的应用程序.如何从模型视图和控制器导入/包含类,因为编译器无法看到它们？

//编辑

SRC/App.scala

import swing._

object App extends Application {

  val model       = new Model
  val view        = new View(model)
  val controller  = new Controller(model, view)

  view.visible = true

}

SRC /型号/ Model.scala

class Model {
  // some code
}

SRC /查看/ View.scala

import swing._

class View(model:Model) extends MainFrame {
  // some code
}

SRC /控制器/ Controller.scala

class Controller(model:Model, view:View) {
  // some code
}

这是一个构建脚本

#!/bin/bash

source ${0%/*}/config.inc.sh

if [ ! -d $CLASSES_PATH ]; …

可能重复:
C动态增长的数组

我有一个程序,我需要从文件中读取浮点数.每行是一个浮点数.问题是这个文件可能非常大

 float tab[1000];     
 
 f = fopen ("data.txt", "r");
 i=0;   
 while (feof(f) == 0) {        
   fscanf (f, "%f\n", &tab[i]);                
   i++;    
 }

如果它太小,我怎么能动态改变数组的大小呢？

我有这个功能,负责网络聊天中的通信.一切正常没有t <- getClockTime(这里是代码):

talk :: WS.Protocol p => MVar State -> Client -> WS.WebSockets p ()
talk state client@(user, sink) = flip WS.catchWsError catchDisconnect $ 
  forever $ do
    t <- getClockTime
    msg <- WS.receiveData
    case () of
      () | T.unpack(msg) == "#list" -> liftIO $ readMVar state >>= listClients client
        | T.unpack(msg) == "#time" -> liftIO (sendTime client)
        | "#name" `T.isPrefixOf` msg -> liftIO (command msg client)
        | otherwise -> liftIO $ readMVar state >>= broadcast
          (user `mappend` …