Ruby 线程 add_trace_func函数

Thread#add_trace_func() : add_trace_func() 是Thread类的一个方法，用于添加进程作为追踪的处理程序。

语法。Thread.add_trace_func()

参数。线程值

返回：添加进程作为追踪的处理程序。

例子 #1 :

# Ruby code for Thread.add_trace_func() method
  
# declaring Thread 
a = Thread.new { print "a"; Thread.stop; print "c" }
  
prc = lambda {puts 'Hello'}  
  
# add_trace_func form
puts "Thread a add_trace_func() form : #{a.add_trace_func(prc)}\n\n"

输出:

Thread a add_trace_func() form : #

例子 #2 :

# Ruby code for Thread.add_trace_func() method
  
# declaring Thread 
a = Thread.new { puts "HI! I am learning to code"}
  
prc = lambda {puts 'Hello'}  
  
# add_trace_func form
puts "Thread a add_trace_func() form : #{a.add_trace_func(prc)}\n\n"

输出:

Thread a add_trace_func() form : #