后来因为某种原因,突然不会读书了,也许得了什么怪病吧:) end #aPerson.read #这里将报错"undefined method `read' for #<Person:0x39162f0> (NoMethodError 当然就不能随便给陌生人看自己的身体了 :) end #aPerson.showbody #将报错:private method `showbody' called for #<Person:0x35d5f70> (NoMethodError
2016-09-12 Updated 2016-10-07 Updated 2016-10-07 Error: undefined method `size' for nil:NilClass (NoMethodError 注意要设置到系统变量而不是用户变量 2016-10-07 Error: undefined method `size' for nil:NilClass (NoMethodError) gem install invalid gem: package is corrupt, exception while verifying: undefined method `size' for nil:NilClass (NoMethodError Download a cacert.pem for RailsInstaller gem 安装时出现 undefined method `size' for nil:NilClass (NoMethodError
前置库 yum install zlib-devel yum install zlib-devel 如果不安装,后面会遇到这个问题: ERROR: While executing gem … (NoMethodError Loading command: install (LoadError) cannot load such file — zlib ERROR: While executing gem … (NoMethodError
-1.1.3/lib/gh_inspector/sidekick.rb:95:in `parse_results': undefined method `map' for nil:NilClass (NoMethodError
传递消息给对象时,对象会执行相应的方法,如果对象没有对应的方法则会报错 NoMethodError。
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