Bit String

AddSlashes: String added to the slash. bin2hex: binary into hexadecimal. Chop: Remove continuous blanks. Chr: returns the ordinal value of the character. chunk_split: The string is divided into small pieces. convert_cyr_string: Converts the ancient Slavonic string into another string. crypt: Encrypt the string with DES encoding. echo: output string. explode: cut the string. flush: clear the output buffer. ...

Quoted_printable_decode (PHP3 >= 3.0.6, PHP4) quoted_printable_decode---&http://www.aliyun.com/zixun/ Aggregation/37954.html ">nbsp; The conversion reference can list the string as 8-bit string syntax: String quoted_printable ...

Count_chars (PHP4 >= 4.0b4) count_chars---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Returns the information syntax for the character used in the string: Mixed Count_chars (String string [, Mode]) Description: Compute argument string ...

CRC32 (PHP4 >= 4.0.1) crc32---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Compute string CRC32 polynomial syntax: int crc32 (String str) Description: The 32-bit long CRC polynomial that produces the parameter str (cyclic redundancy che ...

After a period of public testing, Rabbit Rabbit Evaluation V5.0 official release today, the major application of the market are synchronized updates online. Ann Bunny 5.0 Major updates (all are heavyweight):-Increase CPU single-threaded test-increase 32/64-bit CPU performance test-replace the graphics test engine with the real game engine: cocos2d, Havok vision-add HTML5 test- Improved total score calculation Method 5.0 improvement of dialysis in rabbit test one, CPU single-thread performance testing multi-core multithreading operation ability represents the whole ...

GNU grep is a string search tool based on a fast lazy-state matching program that uses complete regular expression matching for text character searches. Search results are many times faster than Unix grep or egrep. grep 2.10 This version of "CHAR" is no longer a symbolic type system that handles improper bit set mode bytes. Now rejecting the command line may result in an infinite disk fill loop. Software Information: http://www.gnu.org/software/grep/...

1. Boxing, unpacking or aliases many of the introduction of C #. NET learning experience books on the introduction of the int-> Int32 is a boxing process, the reverse is the process of unpacking. This is true of many other variable types, such as short <-> int16,long <->int64. For the average programmer, it is not necessary to understand this process, because these boxes and unboxing actions can be automatically completed, do not need to write code to intervene. But we need to remember that ...

Editor's note: The last period of time reproduced in the "5 minutes to understand docker! "Very popular, a short 1500 words, let everyone quickly understand the Docker." Today, I saw the author make a new novel, and immediately turned over. The reason to call this code reading as a fantasy trip is because the author Liu Mengxin (@oilbeater) in the process of reading Docker source, found a few interesting things: from the code point of view Docker did not start a new development mechanism, but the existing tested isolation security mechanism to use the full use, Including Cgroups,c ...

This article is my second time reading Hadoop 0.20.2 notes, encountered many problems in the reading process, and ultimately through a variety of ways to solve most of the. 　　Hadoop the whole system is well designed, the source code is worth learning distributed students read, will be all notes one by one post, hope to facilitate reading Hadoop source code, less detours. 1 serialization core Technology The objectwritable in 0.20.2 version Hadoop supports the following types of data format serialization: Data type examples say ...

The disadvantage of using HDFS to save a large number of small files with use using the: 1.Hadoop Namenode saves "meta information" data for all files in memory. According to statistics, each file needs to consume NameNode600 bytes of memory. If you need to save a large number of small files will cause great pressure on the namenode. 2. If the use of Hadoop MapReduce small file processing, then the number of Mapper will be the number of small files into a linear correlation (Note: Filei ...