byte conversion chart

NSString converted to a Unicode String: (nsstring*) fname = @ "Test"; char fnamestr[10];memcpy (FNAMESTR, [fname cstringusingencoding:nsunicodestringencoding], ([fname length]));Compared to strcpy, memcpy is not going to end up with ' n ', but will definitely copy the nth bytesnsstring Conversion to char * NSString * str= @ "Test"; const char * a =[STR utf8string];3.char * converted to NSStringNSString *str=[nsstring stringwithcstring encoding:nsutf8

????? Recent projects have a need for picture operations, you need to save the picture in the database. After trying to know that the image type file cannot be stored directly in the database. We need to do a step conversion before saving: Convert image to byte array type byte[]. Conversion requires the MemoryStream cl

PHP/** * byte array and string conversion class * @author ZT*/classBytes {/** * Convert a string string to a byte array * @param $str the string to be converted * @param $bytes destination byte array*/ Public Static functionGetBytes$str) { $len=strlen($str); $bytes=Array(); for($i= 0;$i$len;$i++) {

Document directory OutputStreamWriter and InputStreamReader OutputStreamWriter and InputStreamReader In the entire IO package, it is actually divided into byte streams and bytes streams, but in addition to these two streams, there is also a set of byte streams-the conversion class of bytes streams. OutputStreamWriter: a sub-class of Writer. It converts the out

the current stream as the start of the streamStream. Seek (0, Seekorigin.begin); returnbytes; } /// ///turn byte[] into a Stream/// PublicStream Bytestostream (byte[] bytes) {Stream Stream=NewMemoryStream (bytes); returnstream; } /*------------to------------ the conversion between Stream and file *--------------------------------------------- */ //

; (3) New asciiencoding (). getstring (bprar ); Char [] ---> uint (1). Char [] --> byte []; (2). byte [] --> uint; String ---> byte [] Bpara = system. Text. encoding. Default. getbytes (spara) String ---> uint (1) string --> byte []; (2) byte [] --> uint;

In Sina to see some of the conversion of data flow, share:1. Convert byte[] to InputStream Public InputStream Byte2inputstream (byte[] b) { Bytearrayinputstream Bais = new Bytearrayinputstream (b); return Bais; } 2. Convert InputStream to byte[] Two different ways:Onepublic static final

In Java, the conversion of byte array and int type, in network programming this algorithm is the most basic algorithm, we all know, in the socket transmission, send, the data received by the byte array, but the int type is 4 byte, How to convert an int into a byte array, and

Forced type conversion Forced type conversion, also known as explicit type conversion, refers to the type conversion that must be completed by writing code. This type conversion may result in loss of precision. Therefore, you must write the corresponding code and be able to

Original URL: http://blog.csdn.net/kuai0705/article/details/20841133Note: The following content for learning content collation, record, easy to learn, not the full sense of self-production, if you feel unwell, please contact meI. Multibyte values and byte-order1.brief now has a number 65430, this number in the binary memory of a byte can not be completely saved, storing this number requires more than 1 byte

/*** Convert a byte array to a string representing 16 binary values, such as: byte[]{8,18} to: 0813, and public static byte[]* Hexstr2bytearr (String strin) mutually reversible conversion process** @param ARRB* Byte array to convert* @return The converted String* @throws Exc

Blob, inputstream, and byte Conversion Java is often used in our program development. SQL. blob, byte [], and inputstream are mutually converted. However, in JDK APIs, no available APIs are provided directly, the following program snippets mainly implement util interchange between them.1. byte [] => blobWe

1. About this article When transmitting information using the TCP (class TcpClient), UDP (class UdpClient) protocol under C #, you need to convert the information to an array of type byte to send. This article implements two conversions of object and byte arrays and a way to convert a file to a byte array. Data of the underlying type, which can be converted using

Original URL: http://blog.csdn.net/piaojun_pj/article/details/5903009In Java, the conversion of byte array and int type, in network programming this algorithm is the most basic algorithm, we all know that in the socket transmission, the data received by the sender is a byte array, but the int type is 4 bytes, How to convert an int into a

String goto byte[]string str = "problem"; byte[] Srtbyte = Str.getbytes ();//byte[] turn stringstring res = new String (srtbyte); System.out.println (RES);Of course, there's a way to set the encoding .String str = "problem"; byte[] Srtbyte = null; try {srtbyte = str.getbytes ("UTF-8"); string res = new String (Srtbyte,

Byte conversion character origin: There are many types of machines on the network. These machines are different in the byte order of data. For example, the i386 chip is low in the memory address, The intel processor divides 32-bit integers into four consecutive bytes and stores them in byte order 1-2-3-4 in memory.

Recently in doing some coding and decoding related things, but also encountered the conversion of byte and int, looking at those about anti-code, the complement of instructions still headache, or write down some practical methods.byte, intCoercion type conversions can be used directly: byte B = (byte) aInt;This operati

. Net EncryptionAlgorithmThe returned data is of the byte [] type, which makes it very troublesome to store. The simplest way is to convert byte [] to a string for storage. Of course, if the data volume is large, it should be different. So I will convert byte [] into a string for a simple accumulation and analysis. Currently, there are three simple solutions fo

In our program development, we often use the Java.sql.Blob, byte[], inputstream between the conversion, but in the JDK API, not directly to provide us with the available APIs, the following pieces of the program is mainly to achieve the util between them. First, Byte[]=>blob We can use the hibernate provided by the attitude of the way to achieve such as: Org.h

NSdata, NSString, Byte array, UIImage conversion, nsdatansstring 1. NSData and NSString NSData-> NSString NSString * aString = [[NSString alloc] initWithData: adataencoding: NSUTF8StringEncoding]; NSString-> NSData NSString * aString = @ "1234 abcd "; NSData * aData = [aString dataUsingEncoding: NSUTF8StringEncoding]; 2. NSData and Byte NSData->