null alternatives and similar packages
Based on the "Data Structures" category.
Alternatively, view null alternatives based on common mentions on social networks and blogs.
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gods
GoDS (Go Data Structures) - Sets, Lists, Stacks, Maps, Trees, Queues, and much more -
go-datastructures
A collection of useful, performant, and threadsafe Go datastructures. -
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golang-set
A simple generic set type for the Go language. Trusted by Docker, 1Password, Ethereum and Hashicorp. -
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gocache
☔️ A complete Go cache library that brings you multiple ways of managing your caches -
boomfilters
Probabilistic data structures for processing continuous, unbounded streams. -
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hyperloglog
HyperLogLog with lots of sugar (Sparse, LogLog-Beta bias correction and TailCut space reduction) -
gostl
Data structure and algorithm library for go, designed to provide functions similar to C++ STL -
trie
Data structure and relevant algorithms for extremely fast prefix/fuzzy string searching. -
go-geoindex
Go native library for fast point tracking and K-Nearest queries -
ttlcache
An in-memory cache with item expiration and generics [Moved to: https://github.com/jellydator/ttlcache] -
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hilbert
Go package for mapping values to and from space-filling curves, such as Hilbert and Peano curves. -
Bloomfilter
Face-meltingly fast, thread-safe, marshalable, unionable, probability- and optimal-size-calculating Bloom filter in go -
go-adaptive-radix-tree
Adaptive Radix Trees implemented in Go -
cuckoo-filter
Cuckoo Filter go implement, better than Bloom Filter, configurable and space optimized 布谷鸟过滤器的Go实现，优于布隆过滤器，可以定制化过滤器参数，并进行了空间优化 -
goconcurrentqueue
Go concurrent-safe, goroutine-safe, thread-safe queue -
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ring
Package ring provides a high performance and thread safe Go implementation of a bloom filter. -
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go-rquad
:pushpin: State of the art point location and neighbour finding algorithms for region quadtrees, in Go -
set
A simple Set data structure implementation in Go (Golang) using LinkedHashMap. -
nan
Zero allocation Nullable structures in one library with handy conversion functions, marshallers and unmarshallers -
goset
Set is a useful collection but there is no built-in implementation in Go lang. -
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Build time-series-based applications quickly and at scale.
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README
Nullable Go types
Description
This package provides nullable Go types for bool, float64, int64, int32, string and time.Time replacing sql.NullString, sql.NullInt64, ... that can be marshalled/unmarshalled to/from JSON.
Installation
To install "null", run go get within your project:
go get github.com/emvi/null
Note that from 1.3 on "null" requires Go version 1.13 or newer.
Usage
Here is a short example demonstrating the string type. The other types (int64, float64 and bool) work in the same manner.
package main
import (
"encoding/json"
"database/sql"
"fmt"
"github.com/emvi/null"
)
type NullableString struct {
Value null.String `json:"value"`
}
func main() {
str := NullableString{null.NewString("nullable string", true)}
// or long version: str := NullableString{null.String{sql.NullString{String: "nullable string", Valid: true}}}
data, _ := json.Marshal(str)
fmt.Println(string(data)) // -> {"value": "nullable"}
str.SetNil() // use str.SetValid("value") to set a value again
data, _ = json.Marshal(str)
fmt.Println(string(data)) // -> {"value": null}
}
Contribute
[See CONTRIBUTING.md](CONTRIBUTING.md)
License
MIT
*Note that all licence references and agreements mentioned in the null README section above
are relevant to that project's source code only.