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kotlinlang

i'm probably doing something very dumb here (trying to match a literal dollar followed by chars in a string)...
```println("Hello \$name".contains(Regex("[a-zA-Z0-9]+"))) // true
println("Hello \$name".contains(Regex("\$[a-zA-Z0-9]+"))) // false```
have to escape the dollar in the string literal or Kotlin will treat it as a reference
and have to escape the dollar in the pattern or that means end of string

What you use `\\$` or `[$]` instead of `\$` ?

even better: use `Regex("""\$\w+""")` because you don't have to double the `\` in raw string lterals