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genji | Documentoriented, embedded SQL database | Database library

 by   genjidb Go Version: v0.14.1 License: MIT

 by   genjidb Go Version: v0.14.1 License: MIT

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kandi X-RAY | genji Summary

genji is a Go library typically used in Database applications. genji has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.
Genji is a schemaless database that allows running SQL queries on documents. Checkout the SQL documentation, the Go doc and the usage example in the README to get started quickly. :warning: Genji's API is still unstable: Database compatibility is not guaranteed before reaching v1.0.0.
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Support
Quality
Quality
Security
Security
License
License
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kandi-support Support

  • genji has a medium active ecosystem.
  • It has 882 star(s) with 54 fork(s). There are 31 watchers for this library.
  • There were 2 major release(s) in the last 12 months.
  • There are 25 open issues and 194 have been closed. On average issues are closed in 148 days. There are 2 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of genji is v0.14.1
genji Support
Best in #Database
Average in #Database
genji Support
Best in #Database
Average in #Database

quality kandi Quality

  • genji has 0 bugs and 0 code smells.
genji Quality
Best in #Database
Average in #Database
genji Quality
Best in #Database
Average in #Database

securitySecurity

  • genji has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • genji code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
genji Security
Best in #Database
Average in #Database
genji Security
Best in #Database
Average in #Database

license License

  • genji is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
genji License
Best in #Database
Average in #Database
genji License
Best in #Database
Average in #Database

buildReuse

  • genji releases are available to install and integrate.
  • Installation instructions, examples and code snippets are available.
genji Reuse
Best in #Database
Average in #Database
genji Reuse
Best in #Database
Average in #Database
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genji Key Features

Optional schemas: Genji tables are schemaless, but it is possible to add constraints on any field to ensure the coherence of data within a table.

Multiple Storage Engines: It is possible to store data on disk or in ram, but also to choose between B-Trees and LSM trees. Genji relies on BoltDB and Badger to manage data.

Transaction support: Read-only and read/write transactions are supported by default.

SQL and Documents: Genji mixes the best of both worlds by combining powerful SQL commands with JSON.

Easy to use, easy to learn: Genji was designed for simplicity in mind. It is really easy to insert and read documents of any shape.

Compatible with the database/sql package

Installation

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go get github.com/genjidb/genji

Using Genji's API

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package main

import (
    "context"
    "fmt"
    "log"

    "github.com/genjidb/genji"
    "github.com/genjidb/genji/document"
)

func main() {
    // Create a database instance, here we'll store everything on-disk using the BoltDB engine
    db, err := genji.Open("my.db")
    if err != nil {
        log.Fatal(err)
    }
    // Don't forget to close the database when you're done
    defer db.Close()

    // Attach context, e.g. (*http.Request).Context().
    db = db.WithContext(context.Background())

    // Create a table. Schemas are optional, you don't need to specify one if not needed
    err = db.Exec("CREATE TABLE user")

    // or you can create a table with constraints on certain fields
    err = db.Exec(`
        CREATE TABLE user(
            id              INT     PRIMARY KEY,
            name            TEXT    NOT NULL,
            address.city    TEXT    DEFAULT "?",
            friends         ARRAY,

            UNIQUE(name)
        )
    `)

    // Create an index
    err = db.Exec("CREATE INDEX idx_user_city_zip ON user (address.city, address.zipcode)")

    // Insert some data
    err = db.Exec("INSERT INTO user (id, name, age) VALUES (?, ?, ?)", 10, "Foo1", 15)

    // Supported values can go from simple integers to richer data types like lists or documents
    err = db.Exec(`
    INSERT INTO user (id, name, age, address, friends)
    VALUES (
        11,
        'Foo2',
        20,
        {"city": "Lyon", "zipcode": "69001"},
        ["foo", "bar", "baz"]
    )`)

    // Go structures can be passed directly
    type User struct {
        ID              uint
        Name            string
        TheAgeOfTheUser float64 `genji:"age"`
        Address         struct {
            City    string
            ZipCode string
        }
    }

    // Let's create a user
    u := User{
        ID:              20,
        Name:            "foo",
        TheAgeOfTheUser: 40,
    }
    u.Address.City = "Lyon"
    u.Address.ZipCode = "69001"

    err = db.Exec(`INSERT INTO user VALUES ?`, &u)

    // Query some documents
    res, err := db.Query("SELECT id, name, age, address FROM user WHERE age >= ?", 18)
    // always close the result when you're done with it
    defer res.Close()

    // Iterate over the results
    err = res.Iterate(func(d types.Document) error {
        // When querying an explicit list of fields, you can use the Scan function to scan them
        // in order. Note that the types don't have to match exactly the types stored in the table
        // as long as they are compatible.
        var id int
        var name string
        var age int32
        var address struct {
            City    string
            ZipCode string
        }

        err = document.Scan(d, &id, &name, &age, &address)
        if err != nil {
            return err
        }

        fmt.Println(id, name, age, address)

        // It is also possible to scan the results into a structure
        var u User
        err = document.StructScan(d, &u)
        if err != nil {
            return err
        }

        fmt.Println(u)

        // Or scan into a map
        var m map[string]interface{}
        err = document.MapScan(d, &m)
        if err != nil {
            return err
        }

        fmt.Println(m)
        return nil
    })
}

Using database/sql

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// import Genji as a blank import
import _ "github.com/genjidb/genji/driver"

// Create a sql/database DB instance
db, err := sql.Open("genji", "my.db")
if err != nil {
    log.Fatal(err)
}
defer db.Close()

// Then use db as usual
res, err := db.ExecContext(...)
res, err := db.Query(...)
res, err := db.QueryRow(...)

Using the BoltDB engine

copy iconCopydownload iconDownload
import (
    "log"

    "github.com/genjidb/genji"
)

func main() {
    db, err := genji.Open("my.db")
    defer db.Close()
}

Using the memory engine

copy iconCopydownload iconDownload
import (
    "log"

    "github.com/genjidb/genji"
)

func main() {
    db, err := genji.Open(":memory:")
    if err != nil {
        log.Fatal(err)
    }
    defer db.Close()
}

Using the Badger engine

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go get github.com/genjidb/genji/engine/badgerengine

Genji shell

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go get github.com/genjidb/genji/cmd/genji

How do I place an image in an area/shape by CSS using ReactJS?

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background-size: contain

segmentation fault while executing C hangman program with file pointer

copy iconCopydownload iconDownload
score_in_fp = fopen("ow_hangman_saved_score.data", "r");
if(!score_in_fp) {
  // handle error
}

Community Discussions

Trending Discussions on genji
  • How do I place an image in an area/shape by CSS using ReactJS?
  • segmentation fault while executing C hangman program with file pointer
Trending Discussions on genji

QUESTION

How do I place an image in an area/shape by CSS using ReactJS?

Asked 2022-Jan-24 at 03:43

So I am trying to build a team picker for Overwatch, and I've got a website with cards laid out in a horizontal row. They are blank, gray cards. They are placed using the following JSX code:

import React from 'react';
import './heroes.css';

const heroes = () => {
  return (
      <div>
          <div className='hero-container'> {
            displayHeroes()
          }
          </div>
      </div>
  )
};

const displayHeroes = () => {
  const row = [];
  const heroes = ['Dva','Orisa','Rein','Hog','Sigma',
                  'Winston','Ball','Zar','Ashe,','Bastion',
                  'Cassidy','Doom','Echo','Genji',
                  'Hanzo','Junkrat','Mei','Pharah',
                  'Reaper','Soldier','Sombra','Sym',
                  'Torb','Tracer','Widow','Ana',
                  'Bap','Brig','Lucio','Mercy',
                  'Moira','Zen'];
  for (let i =0; i<32; i++){
      row.push(<div className='hero scale-up-ver-bottom '>
        <img src="" alt={heroes[i]} />
      </div>)
  }
  return row;
};

heroes() just gives a div to put all the cards into, and displayHeroes() loops through an array of heroes and assigns alt text to each card, and returns an array of divs to be rendered. When I put a filepath in src="" nothing happens at all.

.hero {
    background-color: gray;
    width: 30px;
    height: 50px;
    margin-top: 10px;
    margin-right: 2.5px;
    margin-left: 2.5px;
    padding: 20px;
    border-radius: 10px;
    flex-shrink: 0;
    box-shadow: 0px 5px 10px gray;
    outline-style: solid;
    outline-width: 2.5px;
    outline-color: black;
}

.hero img {
    width: 100%;
    height: 100%;
}

How can I put an image inside a shaped defined by css properties? I can't figure it out.

ANSWER

Answered 2022-Jan-24 at 03:43

I would set the image as background and use

background-size: contain

Find more about background-size here: https://www.w3schools.com/cssref/css3_pr_background-size.asp

Source https://stackoverflow.com/questions/70828766

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install genji

Install the Genji database.

Support

See ARCHITECTURE.md and CONTRIBUTING.md. If you have any doubt, join the Gophers Slack channel or open an issue.

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