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Rename startsWithCodePt to startsWithScalar

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Richard Feldman 2022-07-02 15:19:04 -04:00
parent c9e52b8311
commit af05723d35
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13 changed files with 30 additions and 30 deletions
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12
crates/compiler/builtins/roc/Str.roc
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@ -9,7 +9,7 @@ interface Str
split,
repeat,
countGraphemes,
startsWithCodePt,
startsWithScalar,
toUtf8,
fromUtf8,
fromUtf8Range,
@ -165,13 +165,13 @@ countGraphemes : Str -> Nat
##
## **Performance Note:** This runs slightly faster than [Str.startsWith], so
## if you want to check whether a string begins with something that's representable
## in a single code point, you can use (for example) `Str.startsWithCodePt '鹏'`
## instead of `Str.startsWithCodePt "鹏"`. ('鹏' evaluates to the [U32]
## in a single code point, you can use (for example) `Str.startsWithScalar '鹏'`
## instead of `Str.startsWithScalar "鹏"`. ('鹏' evaluates to the [U32]
## value `40527`.) This will not work for graphemes which take up multiple code
## points, however; `Str.startsWithCodePt '👩‍👩‍👦‍👦'` would be a compiler error
## points, however; `Str.startsWithScalar '👩‍👩‍👦‍👦'` would be a compiler error
## because 👩‍👩‍👦‍👦 takes up multiple code points and cannot be represented as a
## single [U32]. You'd need to use `Str.startsWithCodePt "🕊"` instead.
startsWithCodePt : Str, U32 -> Bool
## single [U32]. You'd need to use `Str.startsWithScalar "🕊"` instead.
startsWithScalar : Str, U32 -> Bool
## Return a [List] of the [unicode scalar values](https://unicode.org/glossary/#unicode_scalar_value)
## in the given string.