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20 lines
1.1 KiB
Markdown
20 lines
1.1 KiB
Markdown
# Functional Language Features: Iterators and Closures
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Rust's design has taken inspiration from many exisitng languages and techniques
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One significant influence is *functional programming*
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Programming in a functional style often include using functions as values by passing them in args, returning them form other unfcitons, assigning them to varaibles for later execution and so forth.
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This chapter/section won't debate the issue of what functional programming is or isn't.
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It will discuss some features of Rust that are similar to features in many languages often referred to as functional
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It will cover:
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- [*Closures*](./Closures.md) - a function-like construct you can store in a variable
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- [*Iterators*](./Iterators.md) - a way of processing a series of elements
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- How to use colsure and iterators to improve the I/O project (minigrep)
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- The preformance of closures and iterators (Spoiler alert: they are faster than you might think!)
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We have already covered some other Rust freatures, such as pattern matchin and enums, that are also influenced by the functional style.
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Mastering closures and iterators is an improtant part of wiritng idiomatic, fast Rust code. |