B4X FEED [B4X] Regular expressions (RegEx) tutorial

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نام موضوع [B4X] Regular expressions (RegEx) tutorial
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آخرین ارسال توسط PracticalSoft
Jun 6, 2020
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Regular expressions are very powerful and make complicate parsing challenges much easier.
This short tutorial will describe the usage of regular expressions in Basic4android.
If you are not familiar with regular expressions you can find many good tutorials online. I recommend you to start with this one:

Basic4android uses Java regular expression engine. See this page for specific nuances related to this engine:

Regular expressions methods in Basic4android start with the predefined object named Regex. You can write Regex followed by a dot to see the .

All methods accept a pattern string. This is the regular expression pattern. Note that internally the compiled patterns are cached. So there is no performance loss when using the same patterns multiple times.

For each method there are two variants. The difference between the variants is that the second...



 

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