# ~~NoSQL (Distributed / Big Data) Databases with Couchbase~~ (deprecated)

!!! info
    These docs are about to be updated. 🎉

    The current version assumes Pydantic v1.

    The new docs will hopefully use Pydantic v2 and will use <a href="https://art049.github.io/odmantic/" class="external-link" target="_blank">ODMantic</a> with MongoDB.

!!! warning "Deprecated"
    This tutorial is deprecated and will be removed in a future version.

		}
		return ecdh.X25519().NewPublicKey(der)
	case oid.Equal(oidPublicKeyDSA):
		y := new(big.Int)
		if !der.ReadASN1Integer(y) {
			return nil, errors.New("x509: invalid DSA public key")
		}
		pub := &dsa.PublicKey{
			Y: y,
			Parameters: dsa.Parameters{
				P: new(big.Int),
				Q: new(big.Int),
				G: new(big.Int),
			},
		}
		paramsDer := cryptobyte.String(params.FullBytes)

	io.ReadFull(&r.declReader, b)
	x.SetBytes(b)
	if signed && n&1 != 0 {
		x.Neg(x)
	}
}

func (r *importReader) mpfloat(typ *types.Basic) constant.Value {
	var mant big.Int
	r.mpint(&mant, typ)
	var f big.Float
	f.SetInt(&mant)
	if f.Sign() != 0 {
		f.SetMantExp(&f, int(r.int64()))
	}
	return constant.Make(&f)
}

func (r *importReader) ident() string {
	return r.string()
}

// in the public domain.

//go:build (ppc64 || ppc64le) && !purego

#include "textflag.h"

// ENDIAN_MOVE generates the appropriate
// 4 byte load for big or little endian.
// The 4 bytes at ptr+off is loaded into dst.
// The idx reg is only needed for big endian
// and is clobbered when used.
#ifdef GOARCH_ppc64le
#define ENDIAN_MOVE(off, ptr, dst, idx) \
	MOVWZ	off(ptr),dst
#else

// newer KMA instruction which performs both operations.

// gcmCount represents a 16-byte big-endian count value.
type gcmCount [16]byte

// inc increments the rightmost 32-bits of the count value by 1.
func (x *gcmCount) inc() {
	byteorder.BePutUint32(x[len(x)-4:], byteorder.BeUint32(x[len(x)-4:])+1)
}

// gcmLengths writes len0 || len1 as big-endian values to a 16-byte array.
func gcmLengths(len0, len1 uint64) [16]byte {
	v := [16]byte{}

/**
 * Artifact transform that instruments external artifacts with Gradle instrumentation.
 */
@DisableCachingByDefault(because = "Instrumented jars are too big to cache")
public abstract class ExternalDependencyInstrumentingArtifactTransform extends BaseInstrumentingArtifactTransform {

    @Override
    public void transform(TransformOutputs outputs) {

		// It was verified to work with GNU tar 1.27.1 and BSD tar 3.1.2.
		//  dd if=/dev/zero bs=1G count=16 >> writer-big-long.tar
		//  gnutar -xvf writer-big-long.tar
		//  bsdtar -xvf writer-big-long.tar
		//
		// This file is in PAX format.
		file: "testdata/writer-big-long.tar",
		tests: []testFnc{
			testHeader{Header{
				Typeflag: TypeReg,
				Name:     strings.Repeat("longname/", 15) + "16gig.txt",

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !math_big_pure_go

package big

import _ "unsafe" // for linkname

// implemented in arith_$GOARCH.s

// addVV should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:

	if fd != faketimeState.lastfd {
		t++
		faketimeState.lastfd = fd
	}
	if faketime > t {
		t = faketime
	}
	faketimeState.lastfaketime = t

	// Playback header: 0 0 P B <8-byte time> <4-byte data length> (big endian)
	var buf [4 + 8 + 4]byte
	buf[2] = 'P'
	buf[3] = 'B'
	tu := uint64(t)
	buf[4] = byte(tu >> (7 * 8))
	buf[5] = byte(tu >> (6 * 8))
	buf[6] = byte(tu >> (5 * 8))
	buf[7] = byte(tu >> (4 * 8))

	  encoding/json, encoding/pem, encoding/xml, mime;

	# hashes
	io
	< hash
	< hash/adler32, hash/crc32, hash/crc64, hash/fnv;

	# math/big
	FMT, math/rand
	< math/big;

	# compression
	FMT, encoding/binary, hash/adler32, hash/crc32, sort
	< compress/bzip2, compress/flate, compress/lzw, internal/zstd
	< archive/zip, compress/gzip, compress/zlib;

	# templates