From b01ee98f86f3209fe1602c673b41e558f2d8efef Mon Sep 17 00:00:00 2001
From: "dr. mia von steinkirch, phd"
 <1130416+mvonsteinkirch@users.noreply.github.com>
Date: Fri, 17 Feb 2023 18:22:21 -0800
Subject: [PATCH] Create README.md

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 calldata/README.md | 22 ++++++++++++++++++++++
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 create mode 100644 calldata/README.md

diff --git a/calldata/README.md b/calldata/README.md
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+## calldata
+
+<br>
+
+### tl; dr
+
+<br>
+
+* calldata is the encoded parameter(s) sent on functions by smart contracts to the evm (for example, through `abi.econde()`,`abi.econcdeWithSelector() for a particular interfaced function, or `abi.encodePacked()` for efficient dynamic variables). 
+* `selector()` generates the 4-bytes representing the method in the interface: this is how the evm knows which function is being interacted.
+
+* each piece of calldata is 32 bytes long (64 chars), where 20 hex == 32-bytes
+* types:
+   - static variables: the encoded representation of `uint`, `address`, `bool`, `bytes`, `tuples`
+   - dynamics variables: non-fixed-size types: `bytes`, `string`, dynamic and fixed arrays `<T>[]`
+
+<br>
+
+
+---
+
+### resources