ach
decimal
ach | decimal | |
---|---|---|
3 | 15 | |
431 | 5,945 | |
1.2% | 2.0% | |
9.4 | 7.4 | |
7 days ago | 11 days ago | |
Go | Go | |
Apache License 2.0 | GNU General Public License v3.0 or later |
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.
ach
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US banks hit by deposit delays
They're specifically formatted ASCII text files[1][2].
A single file can have multiple batches. A single batch can have multiple transactions.
For example, a company may upload an ACH file to their bank for payroll that contains a single batch in it and in that single batch they have entries for each employee. Or it may have multiple batches, one for payroll, one for reimbursements, one for bonuses (if they pay those out as independent transfers). Maybe it'll have batches to their for 401k custodian as well for the payroll period.
Their bank may receive that batch file, validate that and combine those batches with all the other ones it has and send those as a combined file to the clearing house.[3]
At the end of the day, the ACH network is just a bunch of text files being pushed to sftp servers and servers periodically polling for new text files in those sftp directories to pick up and process.
[1] https://achdevguide.nacha.org/ach-file-overview
[2] https://github.com/moov-io/ach/blob/master/docs/file-structu...
[3] My understanding of this aspect is vague at best, so may be misconstruing how they're aggregated or passed through to the clearing house.
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FinTech APIs directory
moov-io/ach another useful ACH library written in Go https://github.com/moov-io/ach
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What do you use to get FinTech Developer news?
A lot of good GH projects have Slacks/Discords and people you can follow. https://github.com/moov-io/ach is one of hundreds. Also search GH for “awesome fintech”.
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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Any go and python number experts here?
while working with money, dont use floats, use something like https://github.com/shopspring/decimal (go std lib doesnt have its own decimals yet)
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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.
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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.
What are some alternatives?
Golang Crypto Trading Bot - A golang implementation of a console-based trading bot for cryptocurrency exchanges
transaction - Embedded database for accounts transactions.
decimal - A high-performance, arbitrary-precision, floating-point decimal library.
orderbook - Matching Engine for Limit Order Book in Golang
go-money - Go implementation of Fowler's Money pattern
fastme
go-finance - :warning: Deprecrated in favor of https://github.com/piquette/finance-go
ticker - Terminal stock ticker with live updates and position tracking
Testify - A toolkit with common assertions and mocks that plays nicely with the standard library
vat - Go package for dealing with EU VAT. Does VAT number validation & rates retrieval.
apd - Arbitrary-precision decimals for Go