Component introduction

The smart contract library template covers common codes from basic types to upper-level business, and users can refer to and reuse them according to actual needs.

Environmental requirements

Dependent software	Description	Remark
Solidity	0.4.25
Git	Download requires Git

Documentation

Contribute code

Welcome to participate in the community construction of this project:

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Welcome to submit code(Pull requests)。

Solicitation of contract

In order to cover and meet the demands of increasingly rich developers and industries, the smart contract code solicitation order is now issued to the majority of blockchain-loving developers and partners.

This event is based on the Solidity language soliciting smart contract codes. Version range: 0.4.25-0.6.10.

In order to facilitate participation, we have drawn up a partial task list (as shown in the table below). Each participant can choose the task he or she is interested in to receive and develop, or it can be a development task based on a specific business scenario. In principle, no code function is required. The limit. At the same time, since each task is an overview description and contains more content, each task can be picked up by multiple participants.

Task ID	Task category	Task name	Task description
1	Original contract function	Optimization and enhancement of the original contract library	Supplement and enhance the functions of existing contracts in the smart contract library, such as providing arrays, strings, addresses, mathematical calculations and other operations for different data types.
2	Original contract function	Floating point, fixed point	Solidity itself has no relevant support, and needs to allow functions such as specified precision and four arithmetic operations.
3	Original contract function	Math enhancement	Provide square root, exponent, logarithm and other operations.
4	Original contract function	Bit manipulation	Provides various bit operations, such as taking the leftmost or rightmost 1 of an integer, etc.
5	New data structure	Two-dimensional array	For different data types, it provides operations such as adding, deleting, modifying, checking, traversing, and existence of a two-digit array.
6	New data structure	Collection	For different data types, it provides operations such as creation, addition, deletion, modification, search, traversal, and existence of a set (Set).
7	New built-in functions	Built-in function	Provide corresponding functions based on built-in functions such as block, msg, tx, etc.
8	New built-in functions	Time operation	Provide year, month and day time calculation, conversion and query functions
9	New function module	Counter operation	Provide counter function based on solidity
10	New function module	Privacy computing	Provide contracts related to privacy calculations, such as zero-knowledge proofs, etc.
11	New function module	Anonymous voting	Anonymous voting is realized. During the voting period, the information of each vote is on the chain in ciphertext, and it will be made public after the voting ends.
12	New function module	Agent execution	A proxy contract, which mainly includes interfaces for adding functions to be executed, expiration time, function execution, etc.
13	New function module	Permission operation	Provide functions such as creating, assigning, and canceling permissions
14	New function module	Multi-signature	Provides an abstract level of multi-party signature function, which can be applied to multi-party authentication scenarios
15	New function module	Multi-party voting	Provide multi-party voting function, voting strategies can be diversified
16	New function module	Black and white list	Provides the creation, query, traversal, addition and deletion of black and white lists
17	New scene	Commodity traceability	It can provide related solution cases of smart contracts for the whole life cycle of commodity traceability or one of the links.
18	New scene	Copyright protection	Including but not limited to cultural, patent, artwork, digital content confirmation, authentication and other programs.
19	New scene	Finance	For financial scenarios such as supply chain finance, credit investigation, and anti-money laundering, provide relevant smart contract generalized templates.
20	New scene	Charity	Based on charity and public welfare, provide but not limited to use scenarios such as traceability of donations, incentives for good deeds, etc.
21	New scene	File management	Provides the realization of functions related to file management, including but not limited to use scenarios such as personal resume, academic certificate, honor certificate, etc.
22	New scene	Sharing economy	Aiming at the pain points in the sharing economy, provide blockchain solutions, such as renting houses, book sharing and other usage scenarios.

License