Ruby Array select!()函数

Array#select!() : select!()是一个Array类的方法，它返回给定的块，从自我中连续传入元素，删除块返回假值的元素。

语法。Array.select!()

参数。数组

返回：给定的块从自身连续输入元素，删除该块返回假值的元素。

例子 #1 :

# Ruby code for select!() method
  
# declaring array
a = [18, 22, 33, 3, 5, 6]
  
# declaring array
b = [1, 4, 1, 1, 88, 9]
  
# declaring array
c = [18, 22, 3, 3, 50, 6]
  
# select!
puts "select! method : #{a.select! {|num| num > 10 }}\n\n"
  
# select!
puts "select! method : #{b.select! {|x| x.odd? }}\n\n"

输出:

select! method : [18, 22, 33]

select! method : [1, 1, 1, 9]

例子 #2 :

# Ruby code for select!() method
  
# declaring array
a = [18, 22, 33, 3, 5, 6]
  
# declaring array
b = [1, 4, 1, 1, 88, 9]
  
# declaring array
c = [18, 22, 3, 3, 53, 6]
  
# select!
puts "select! method : #{c.select! {|num| num > 10 }}\n\n"
  
# select!
puts "select! method : #{c.select! {|num| num.even? }}\n\n"

输出:

select! method : [18, 22, 53]

select! method : [18, 22]