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Regular Expressions

No, this isn’t about what Tolii and Tosha say to us every evening after being told its bath time!

Instead, its a post to refer you to this excellent tutorial on the computer kind of “regular expressions”, a way of expressing to a computer what to search for.

For example, here’s how to search for an email address using a regular expression:

  • It describes a series of letters, digits, dots, underscores, percentage signs and hyphens, …
  • followed by an at sign, …
  • followed by another series of letters, digits and hyphens, ..
  • finally followed by a single dot and between two and four letters
  • e.g. “”

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