Scala 2.9中的settings.maxPrintString REPL

我想在Scala REPL中禁用字符串值的截斷。Scala 2.9中的settings.maxPrintString REPL

以下螺紋提示輸入settings.maxPrintString = 0：

How to force interpreter show complete stack trace?

不幸的是，這似乎並沒有使用Scala 2.9的工作：

Welcome to Scala version 2.9.1.final (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_29). 
Type in expressions to have them evaluated. 
Type :help for more information. 

scala> settings.maxPrintString = 0 
<console>:10: error: not found: value settings 
val $ires0 = settings.maxPrintString 
      ^
<console>:7: error: not found: value settings 
     settings.maxPrintString = 0 
    ^

有什麼我需要進口？

我試過:power，這使得settings可用，但它似乎並不支持maxPrintString：

scala> :power 
** Power User mode enabled - BEEP BOOP SPIZ ** 
** :phase has been set to 'typer'.   ** 
** scala.tools.nsc._ has been imported  ** 
** global._ and definitions._ also imported ** 
** Try :help, vals.<tab>, power.<tab> ** 

scala> settings 
res0: scala.tools.nsc.Settings = 
Settings { 
    -d = . 
    -Yrich-exceptions = true 
    -classpath = bin:lib/* 
    -encoding = UTF-8 
} 


scala> settings.maxPrintString = 0 
<console>:31: error: value maxPrintString is not a member of scala.tools.nsc.Settings 
val $ires9 = settings.maxPrintString 
        ^
<console>:28: error: value maxPrintString is not a member of scala.tools.nsc.Settings 
     settings.maxPrintString = 0

我看到scala.tools.nsc.InterpreterSettings.maxPrintString存在，但我不知道怎麼弄的InterpreterSettings適當的實例修改。

來源

2012-03-01 mrg

~/code/scala scala29 
Welcome to Scala version 2.9.1.final (Java HotSpot(TM) 64-Bit Server VM, Java 1.6.0_29). 
Type in expressions to have them evaluated. 
Type :help for more information. 

scala> :power 
** Power User mode enabled - BEEP BOOP SPIZ ** 
** :phase has been set to 'typer'.   ** 
** scala.tools.nsc._ has been imported  ** 
** global._ and definitions._ also imported ** 
** Try :help, vals.<tab>, power.<tab> ** 

    scala> vals.isettings.maxPrintString 
maxPrintString  maxPrintString_= 

scala> vals.isettings.maxPrintString = 10000 
vals.isettings.maxPrintString: Int = 10000

或

$ scala -uniqid -Xprint:typer -Yshow-syms -Dscala.repl.maxprintstring=64000

其中樣本輸出將顯示截斷沒有更高的限制。

來源

2012-03-01 21:00:17 retronym

謝謝retrony！我應該嘗試它所說的嘗試！我發現設置0現在似乎確實意味着零。有沒有什麼辦法可以設置無限的這些日子，或者你只需要選擇一個大數字，就像你以上所做的那樣（我嘗試了-1，但沒有運氣） – mrg 2012-03-02 08:53:39

沒關係。 Int.MaxValue會很好，並且有很好的Ctrl-R支持，我不會經常輸入它。或者我可以使用-i，使用-Yrepl-sync解決方法，因此不會掛起。 – mrg 2012-03-02 09:00:53

在Scala 2.10.3中也可以:) – 2014-03-25 22:44:49

Scala 2.9中的settings.maxPrintString REPL

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