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Ilya Kantor 2019-06-25 16:25:50 +03:00
parent 69fbb63bc4
commit 4f2a90854d
4 changed files with 33 additions and 26 deletions
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9-regular-expressions/09-regexp-groups/5-parse-expression/solution.md
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@ -1,8 +1,10 @@
A regexp for a number is: `pattern:-?\d+(\.\d+)?`. We created it in previous tasks.
An operator is `pattern:[-+*/]`. We put the dash `pattern:-` first, because in the middle it would mean a character range, we don't need that.
An operator is `pattern:[-+*/]`.
Note that a slash should be escaped inside a JavaScript regexp `pattern:/.../`.
Please note:
- Here the dash `pattern:-` goes first in the brackets, because in the middle it would mean a character range, while we just want a character `-`.
- A slash `/` should be escaped inside a JavaScript regexp `pattern:/.../`, we'll do that later.
We need a number, an operator, and then another number. And optional spaces between them.