I need to write a regular expression for lines of expression such as these:
我需要为表达式行编写正则表达式,例如:
constraint :name, 'name != nil'
constraint :name, 'name =~/^[A-Z]/'
constraint :age, 'age >= 0'
A line always contains the word "constraint :", and any word can come after ":" followed by ",".
一行总是包含单词“constraint:”,任何单词都可以在“:”后跟“,”。
A conditional expression will then appear inside ' '.
然后条件表达式将出现在''中。
I have written a regex like this:
我写了一个像这样的正则表达式:
/^constraint :(\w*),'(.*)'$/
And it doesn't match. I am new to Ruby and regular expression. Can anyone please help me?
它不匹配。我是Ruby和正则表达的新手。谁能帮帮我吗?
1 个解决方案
#1
3
You forgot the space after the comma. Try /^constraint :(\w*), '(.*)'$/
你忘了逗号后面的空格。尝试/ ^约束:(\ w *),'(。*)'$ /
Although to be more general, I'd go with this: /^constraint :([^,]+),\s*'(.*)'$/.
虽然更一般,但我会选择:/ ^约束:([^,] +),\ s *'(。*)'$ /。
#1
3
You forgot the space after the comma. Try /^constraint :(\w*), '(.*)'$/
你忘了逗号后面的空格。尝试/ ^约束:(\ w *),'(。*)'$ /
Although to be more general, I'd go with this: /^constraint :([^,]+),\s*'(.*)'$/.
虽然更一般,但我会选择:/ ^约束:([^,] +),\ s *'(。*)'$ /。