Extend standard library

[turbolent]

Issue To Be Solved

The standard library is fairly basic at the moment.

Extend the standard library so it provides most functions a developer needs.

Suggested Solution

• Gather missing functionality and decide what is worth prioritizing
• Document how implementations can be contributed
• Implement missing functionality

Inspiration

• Other language standard libraries
• https://github.com/green-goo-dao/flow-utils/blob/main/cadence/contracts/ArrayUtils.cdc
• https://github.com/green-goo-dao/flow-utils/blob/main/cadence/contracts/StringUtils.cdc
• https://github.com/green-goo-dao/flow-utils/blob/main/cadence/contracts/AddressUtils.cdc

Grant

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1. Add fromString conversion function to Address type #2154
   Feature Feedback Good First Issue +3
2. Add fromBigEndianBytes conversion function to Number types #2448
   Feature Good First Issue +2
3. Add check functionality to AuthAccount #564
   Feature Feedback Good First Issue +3
4. Return overflowing value when multiplying for UInt256 and Int256 #2389
   Feature Feedback Good First Issue P-Low +4
5. Add a Range<T: Integer> type and allow in for-loop #2482
   4 of 5
   Feature Feedback Good First Issue +3
   

Other

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1. Add Character.utf8 similar to String.utf8 field #2604
   Feature Feedback +2
   
2. Add basic types for manipulating dates and times #843
   Feature Feedback Good First Issue +3
3. Request for additional math functions: ln(x), log(x,b), pow(x,y), sqrt(x), exp(x) #1151
   Feature Feedback Good First Issue +3
4. Allow conversion between constant-size and variable-size arrays #2530
   Feature Feedback Good First Issue +3
5. Enhancing Cadence/Flow with Expanded Elliptic Curve Operations Support for Zero-Knowledge Proofs #2576
   Feature Feedback +2