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Aral Balkan

So, challenge to the wizards out there: is this the best we can do to count Unicode glyphs in a string (equivalent of string.characters.count in Swift) or is there a more performant way I don’t know about?

(It’s fast enough for my needs but not ideal by any means.)

ar.al/2021/10/31/how-to-count-

Aral BalkanHow to count Unicode glyphs in Vala using GtkWant to try something really scary this Halloween? Try counting the characters in a string in Vala. For example, how many characters do you think there are in the following string? var zombie = "🧟‍♀️️"; One? You’re right! So how would you go about getting this result in Vala? Use zombie.length, did I hear you say? Oh, you poor, dear, naïve, sweet thing… "🧟‍♀️️".length // 13 What’s that? What about char_count ()?
Nov 03, 2021, 09:11 AM·Public·Web
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bryan

@aral

never used Vala personally but curious if `char_count()` may do what you are looking for. It appears `length()` returns the number of bytes.

valadoc.org/glib-2.0/string.le

valadoc.orgstring.length – glib-2.0The canonical source for Vala API references.
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Aral Balkan

@bmallred Nope, sadly char_count does not take grapheme clusters into consideration. Did try :)

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Elias Mårtenson

@aral Unicode does not have a concept of glyph, so it's an incorrect question to ask.

In all cases, one has to look at what one actually needs, and decide on the solution based on that. Sometimes it's bytes, sometimes it's unicode codepoints, sometimes it's grapheme clusters, or could could be something entirely different.

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