decimal
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| decimal | Golang Crypto Trading Bot | |
|---|---|---|
| 15 | 0 | |
| 5,867 | 1,008 | |
| 2.1% | - | |
| 6.3 | 3.3 | |
| 8 days ago | 3 months ago | |
| Go | Go | |
| GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
decimal
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Trouble understanding rounding when the next digit is after round precision is a #5?
Try it in JS with console.log(4.225 * 100);, you'll see the same unexpected result. Depending on your needs, it's actually fine to just be off by some amount. If it does really matter, then use an arbitrary precision library like https://github.com/shopspring/decimal to get the results you need.
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Handling currency values: facts and best practices
Most programming languages ( JavaScript, PHP, Go, Python, Java, C# ) have built-in support or 3rd-party libraries for handling this data type, even though the internal implementations can differ:
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my first golang project!
Integers, or something like this: https://github.com/shopspring/decimal
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80x improvements in caching by moving from JSON to gob
I make heavy use of caching, and was caching both in-memory and in Redis using JSON to convert the data in to a string. The struct itself isn't super complicated, one level nested, and some fields use the shopspring/decimal library.
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Unexported interfaces usage question
I actually use this to represent monetary values btw :)
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How to round(2) float64?
Check out https://github.com/shopspring/decimal for doing money related calculations.
Have a look at how it's done in some of the popular libraries, eg https://github.com/shopspring/decimal or https://golangrepo.com/repo/rhymond-go-money-go-financial
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Library recommendation -- money calculations, more accurate handling of floats
We personally use https://github.com/shopspring/decimal and it works well.
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What are your favorite packages to use?
decimal, one of the first Go library that created to work with decimal and monetary value.
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What libraries from other languages do you wish were ported over into go?
https://github.com/shopspring/decimal also.
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What are some alternatives?
orderbook - Matching Engine for Limit Order Book in Golang
go-finnhub
gobacktest - event-driven backtesting framework written in golang
go-binance - A Go SDK for Binance API
decimal - A high-performance, arbitrary-precision, floating-point decimal library.
techan - Technical Analysis Library for Golang
go-money - Go implementation of Fowler's Money pattern
go-finance - :warning: Deprecrated in favor of https://github.com/piquette/finance-go
Testify - A toolkit with common assertions and mocks that plays nicely with the standard library
https://github.com/alpeb/go-finance - Go library containing a collection of financial functions for time value of money (annuities), cash flow, interest rate conversions, bonds and depreciation calculations.
apd - Arbitrary-precision decimals for Go