例如,我是否进入国际劳工局,并做以下工作:
jruby-1.6.7 :026 > puts [1,2,3,4,5]
1
2
3
4
5
=> nil
是否有任何途径来压制<代码>nil? 问题在于,如果我投入一个庞大的数据结构,就会引发另一个不相干的回返反应。 我更有兴趣看到从小数报表中得出的产出,我通过一个整体运行,必须不断更新和寻找真实数据。
如果你只想用<代码>、0等时间压制长期产出:
a = [*1..10000];0
# => 0
如果你想普遍加以压制,就使用“~”文档。 The IRB.conf[:INSPECT_MODE] and IRB.conf[:PROMPT][your_prompt][:RETURN] control what is home. 你们可以看一看一下,通过检查IRB.conf[:PROMPT_MODE]。
例:
IRB.conf[:PROMPT][:DEFAULT][:RETURN] = "" # suppress return value completely
在改变价值后,你需要重新启动。
You can also supress the output with the following command as irb --simple-prompt --noecho.
摘录如下:
@ubuntu:~$ irb --simple-prompt
>> puts "hi"
hi
=> nil
>> p "hi"
"hi"
=> "hi"
>> exit
@ubuntu:~$ irb --simple-prompt --noecho
>> puts "hi"
hi
>> p "hi"
"hi"
>>
希望会被罚款。
我使用废墟如下:
@ubuntu:~$ ruby -v
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
从@Tallboy死亡链条
To suppress the return value in Rails console, enter
conf.return_format = ""
Default (Print the return value)
conf.return_format = "=> %s
"
i 继承:
irb_context.echo = false
e.g.
$ irb
> "foo"
=> "foo"
> irb_context.echo = false
> "foo"
>
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