The D Programming Language's Unofficial Docs
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The D Programming Language's Unofficial Docs
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Returns the finished CRC hash. This also calls start to reset the internal state.
Works like finish but does not reset the internal state, so it's possible to continue putting data into this CRC after a call to peek.
Use this to feed the digest with data. Also implements the std.range.primitives.isOutputRange interface for ubyte and const(ubyte)[].
Used to initialize the CRC32 digest.
//Simple example, hashing a string using crc32Of helper function ubyte[4] hash32 = crc32Of("abc"); //Let's get a hash string assert(crcHexString(hash32) == "352441C2"); // Repeat for CRC64 ubyte[8] hash64ecma = crc64ECMAOf("abc"); assert(crcHexString(hash64ecma) == "2CD8094A1A277627"); ubyte[8] hash64iso = crc64ISOOf("abc"); assert(crcHexString(hash64iso) == "3776C42000000000");
ubyte[1024] data; //Using the basic API CRC32 hash32; CRC64ECMA hash64ecma; CRC64ISO hash64iso; //Initialize data here... hash32.put(data); ubyte[4] result32 = hash32.finish(); hash64ecma.put(data); ubyte[8] result64ecma = hash64ecma.finish(); hash64iso.put(data); ubyte[8] result64iso = hash64iso.finish();
1 //Let's use the template features: 2 //Note: When passing a CRC32 to a function, it must be passed by reference! 3 void doSomething(T)(ref T hash) 4 if (isDigest!T) 5 { 6 hash.put(cast(ubyte) 0); 7 } 8 CRC32 crc32; 9 crc32.start(); 10 doSomething(crc32); 11 assert(crcHexString(crc32.finish()) == "D202EF8D"); 12 // repeat for CRC64 13 CRC64ECMA crc64ecma; 14 crc64ecma.start(); 15 doSomething(crc64ecma); 16 assert(crcHexString(crc64ecma.finish()) == "1FADA17364673F59"); 17 CRC64ISO crc64iso; 18 crc64iso.start(); 19 doSomething(crc64iso); 20 assert(crcHexString(crc64iso.finish()) == "6F90000000000000");
Generic Template API used for CRC32 and CRC64 implementations.
The N parameter indicate the size of the hash in bits. The parameter P specify the polynomial to be used for reduction.
You may want to use the CRC32, CRC65ECMA and CRC64ISO aliases for convenience.
See std.digest for differences between template and OOP API.