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https://github.com/rjNemo/underscore
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Ruidy
3617c2de8f
Document that Last panics on empty slices with a clear error message. Add examples for single element and empty slice cases. Related to Issue 13 (PR #41) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
25 lines
635 B
Markdown
25 lines
635 B
Markdown
---
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title: "TakeWhile"
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date: 2025-01-16T00:00:00-00:00
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---
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`TakeWhile` returns elements from the beginning of the slice while the predicate returns true. It stops at the first element where the predicate returns false.
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```go
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package main
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import (
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"fmt"
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u "github.com/rjNemo/underscore"
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)
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func main() {
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nums := []int{1, 2, 3, 4, 5, 6, 7, 8, 9}
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lessThan5 := func(n int) bool { return n < 5 }
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fmt.Println(u.TakeWhile(nums, lessThan5)) // [1, 2, 3, 4]
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words := []string{"apple", "banana", "cherry", "date"}
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shortWords := func(s string) bool { return len(s) < 6 }
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fmt.Println(u.TakeWhile(words, shortWords)) // ["apple"]
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}
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```
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