# Indices in Strings
URL:: https://brilliant.org/practice/slicing/?p=2
Author:: brilliant.org
## Highlights
> If you read our quiz on functions, you'll know that they take in arguments inside their parenthesis and output a value.
> As of now, `find` is for all intents and purposes a function, except that it uses a different syntax. Instead of writing `find(str1, str2)` or something similar, the command is written `str1.find(str2)`.
> There are technical reasons behind this, which we'll dive into in later chapters. But there is also a practical reason: in the notation `find(str1, str2)`, one can easily forget in which order the strings have to be written. The proper syntax `str1.find(str2)` reads more like a sentence:
> "Inside `str1`, find `str2`."
> We call commands like these, that use the dot notation, **methods**. They are essentially functions that are only defined in the context of some variable (more precisely, an *object*) in the program. ([View Highlight](https://read.readwise.io/read/01gfpj2s3b1jekdnfwandv0ma6))
---
Title: Indices in Strings
Author: brilliant.org
Tags: readwise, articles
date: 2024-01-30
---
# Indices in Strings
URL:: https://brilliant.org/practice/slicing/?p=2
Author:: brilliant.org
## AI-Generated Summary
There are technical reasons behind this, which we'll dive into in later chapters.
## Highlights
> If you read our quiz on functions, you'll know that they take in arguments inside their parenthesis and output a value.
> As of now, `find` is for all intents and purposes a function, except that it uses a different syntax. Instead of writing `find(str1, str2)` or something similar, the command is written `str1.find(str2)`.
> There are technical reasons behind this, which we'll dive into in later chapters. But there is also a practical reason: in the notation `find(str1, str2)`, one can easily forget in which order the strings have to be written. The proper syntax `str1.find(str2)` reads more like a sentence:
> "Inside `str1`, find `str2`."
> We call commands like these, that use the dot notation, **methods**. They are essentially functions that are only defined in the context of some variable (more precisely, an *object*) in the program. ([View Highlight](https://read.readwise.io/read/01gfpj2s3b1jekdnfwandv0ma6))