github.com/solo-io/cue@v0.4.7/doc/tutorial/basics/6_expressions/70_regexp.txt (about) 1 cue eval -i regexp.cue 2 cmp stdout expect-stdout-cue 3 4 -- frontmatter.toml -- 5 title = "Regular expressions" 6 description = "" 7 8 -- text.md -- 9 The `=~` and `!~` operators can be used to check against regular expressions. 10 11 The expression `a =~ b` is true if `a` matches `b`, while 12 `a !~ b` is true if `a` does _not_ match `b`. 13 14 Just as with comparison operators, these operators may be used 15 as unary versions to define a set of strings. 16 17 -- regexp.cue -- 18 a: "foo bar" =~ "foo [a-z]{3}" 19 b: "maze" !~ "^[a-z]{3}$" 20 21 c: =~"^[a-z]{3}$" // any string with lowercase ASCII of length 3 22 23 d: c 24 d: "foo" 25 26 e: c 27 e: "foo bar" 28 29 -- expect-stdout-cue -- 30 a: true 31 b: true 32 c: =~"^[a-z]{3}$" 33 d: "foo" 34 e: _|_ // invalid value "foo bar" (does not match =~"^[a-z]{3}$")