ruby-on-rails - 如何从文本中提取这些

Question

我想提取字符串中的赋值。

"a=b  xxxxxx c = d xxxxxxxxx  e= f    g =h"

像这样在 RUBY 中使用正则表达式

["a=b","c=d","e=f", "g=h"]

我试过了：

'a= b sadfsf c= d'.scan(/\w=(\w+)/) 

Answer 1

"a=b  xxxxxx c = d xxxxxxxxx  e= f    g =h"
.scan(/(\w+)\s*=\s*(\w+)/).map{|kv| kv.join("=")}

# => ["a=b", "c=d", "e=f", "g=h"]

Answer 2

它用正则表达式拆分字符串，然后将其存储在一个数组中

然后它会删除 = 符号周围的空白

str = "a=b  xxxxxx c = d xxxxxxxxx  e= f    g =h"
results = str.scan(/[\w]+\s*\=\s*[\w]+/)
results.each { |x| x.gsub!(/\s+/, "")}

Answer 3

s = "a=b  xxxxxx c = d xxxxxxxxx  e= f    g =h"
s.scan(/[[:alpha:]][[:blank:]]*=[[:blank:]]*[[:alpha:]]/).map{|e| e.delete(" ")}
# => ["a=b", "c=d", "e=f", "g=h"]