Regular Expression Note
| symbol | description |
|---|---|
| . | $x=1$ |
| ? | $x==1\shortmid x==0$ |
| + | $x\geq 1$ |
| * | $x\geq 0$ |
| {n} | $x=n$ |
| {min,} | $x\geq min$ |
| {min,max} | $min<x<max$ |
| $[ ]$ | Match a single character in |
| $[\text{^} ]$ | Match a single character not in |
| symbol | description |
|---|---|
| . | $x=1$ |
| ? | $x==1\shortmid x==0$ |
| + | $x\geq 1$ |
| * | $x\geq 0$ |
| {n} | $x=n$ |
| {min,} | $x\geq min$ |
| {min,max} | $min<x<max$ |
| $[ ]$ | Match a single character in |
| $[\text{^} ]$ | Match a single character not in |