How to make word boundary all elements concat with `|`?

Asked Jun 18 '20 at 08:07

Active Jun 18 '20 at 08:07

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In this statement, do Output.printString("THE AVERAGE IS: ");, int matches int in printString, but if we add ^ at front it will work as expected.

Is there a way to add ^ to all elements in |? I'm doing a tokenizer and there are actually many keywords and I don't want to add ^ to each keyword.

asked Jun 18 '20 at 08:07

Henok Tesfaye

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Use word boundaries `\b` instead of `^` and `$` or surround the alternatives with a group `^(?:a|b|c)` if you want to use the anchor `^` – The fourth bird Jun 18 '20 at 08:09
`^(word1|word2|wordN)` – Wiktor Stribiżew Jun 18 '20 at 08:11
@WiktorStribiżew `^(word1|word2|wordN)` will only match the first token, `class`. – Henok Tesfaye Jun 18 '20 at 08:12
It does not matter, you just need to group the patterns in order to anchor them at a single common location. – Wiktor Stribiżew Jun 18 '20 at 08:14
How can I do that? – Henok Tesfaye Jun 18 '20 at 08:23

How to make word boundary all elements concat with `|`?

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