Use of @ encode in Objective-C, objective-c @ encode
Today, when I read Mansonry's code, I came across a rare keyword (maybe I have never used it myself ). :-)
@ Encode => encode a given type as an internal string.
In order to make it easier for you to check it out, you can also write a small example here to learn how
When there are more and more open platforms and openapis, client software is more or less interacting with servers through HTTP and HTTPS protocols. One of the common cases is to encode the URL to ensure the correct transmission of Chinese and special characters. However, this small encode is not as simple as you think.
When I encountered an example in Android development in the past few days, the space c
LeetCode solution ideas: 535. Encode and Decode TinyURL, leetcode535.encode
TinyURL is a URL shortening service where you enter a URL suchhttps://leetcode.com/problems/design-tinyurlAnd it returns a short URL suchhttp://tinyurl.com/4e9iAk.
DesignencodeAnddecodeMethods for the TinyURL service. there is no restriction on how your encode/decode algorithm shold work.
standard type hierarchy-->sequences, There are some strings,unicode descriptions.As for Python code [python] view plain copy >>> z = u "i" >>> #这种代码, in fact nothing. >>> z.__class__
You see, this strange thing ...Later in the Windows XP, Pure Python command line tried, the conclusion is different, Z's result turned into U '/u6211 ', here should not be tested in Pyshell, there seems to be a lot of problems have not been understood clearly
let's look at Enc
Consensus: 1. First of all, it should be determined that Chinese should also be stored with varchar.
2. Test using MySQL statement to view character set
show variables like "%char%"; show variables like "collatio%";
If you look at a place where the encoding is not uniform (Chinese app GBK or UTF8 support), you can modify the value of an item specifically, for example:
SET character_set_client='utf8';
1. Create a database
CREATEDATABASE databasena
Note:this is a companion problem to the System Design problem:design tinyurl.
TinyURL is a URL shortening service where you enter a URL such as and https://leetcode.com/problems/design-tinyurl it returns a short URL such as http://tinyurl.com/4e9iAk .Design the and methods for the encode decode tinyurl service. There is no restriction on what your encode/decode algorithm should work. You just need to en
computers.GrammarEscape (String)
Parameters
Description
String
Necessary. The string to be escaped or encoded.
return valueA copy of the encoded string . Some of these characters are replaced with 16-binary escape sequences.DescriptionThe method does not encode ASCII letters and numbers, nor does it encode the following ASCII punctuation marks: * @-_ +. /
, for example, to add the control to the code.9, click test → run → all tests, you can conduct test analysis.10. After the test is complete, the test explorer will show that the test was passed and the run time is 9 seconds. At this point, the experiment is complete.I've done a coded UI test for a non-Windows Store app before, and this time I tested the Windows Store app, but there are a lot of different th
OID (object Identifier) denotes an object.Examples:------------------------------------------------------------------OID Object------------------------------------------------------------------1.3.14.3.2.26 SHA-12.16.840.1.101.3.4.2.1 SHA-2561.2.840.113549.1.7.2 PKCS-7 Signeddata------------------------------------------------------------------In OpenSSL no functions is directly provided to compute the OID ASN.1 encode. At lease, methods can be taken
How the Zend encode works
People who use PHP know that it is a scripting tool that uses it to write programs that must be placed on the Web server in the form of a source code, so we cannot protect our own sources. We all know that the execution efficiency of any one script is relatively low compared with compiled binary code with the same function. So if there's a tool that can help us write a program written in PHP
It's good to translate into binary
The working principle of Zend encode
People who use PHP know that it is a scripting tool, the program written with it must be in the form of the source code on the Web server, so we can not protect our own source. It is well known that the execution efficiency of any script program is lower than that of a compiled binary code with the same function. So if there's a tool that can help us write a program in PHP
It would be nice to translate it into bin
17.10 Since XML is very verbose, you are given a-to-do encoding it where each tag gets mapped to a pre-defined integer VA Lue. The Language/grammar is as follows:Element---Tag Attributes End Children EndAttribute to Tag ValueEND-to 0Tag--some predefined mapping to intValue--String value ENDFor example, the following XML might is converted into the compressed string below (assuming a mapping of famiLy-L, Person->2, Frstname->3, LastName-4j State-5).becomes:1 4 McDowell 5 CA 0 2 3 Gayle 0 Some Mes
The working principle of Zend encode
People who use PHP know that it is a scripting tool, the program written with it must be in the form of the source code on the Web server, so we can not protect our own source. It is well known that the execution efficiency of any script program is lower than that of a compiled binary code with the same function. So if there's a tool that can help us compile the PHP program into binary code, then it's not only more
Reference:Http://www.360doc.com/content/10/1103/12/1485725_66213001.shtml (urlencode)http://blog.csdn.net/uikoo9/article/details/27981219The data in the computer is binary, whether it is a string or a file, and the encryption is binary,What we want to see is often a string, this article describes the conversion of byte[] into a variety of binary and Base64 Encoding.is a coding method, can be understood as a complex binary, many algorithms are encrypted after the output is byte[], and this byte[]
Encode and decode methods for Python's Str,unicode objectsThe Str object in Python is actually "8-bit string", a byte string, essentially similar to byte[in Java).The Unicode object in Python should be the equivalent of a string object in Java, or essentially a Java char[].Fors= " Hello " u=u" hello "1. The S.decode method and the U.encode method are the most commonly used,In short, Python internally means that the string is Unicode (in fact, Python'
problem:Design a algorithm to encode a list of strings to a string. The encoded string is then sent over the network and are decoded back to the original list of strings.Machine 1 (sender) has the function:String encode (vectorMachine 2 (receiver) has the function:VectorSo machine 1 does:String encoded_string = Encode (STRs);and Machine 2 does:Vectorstrs2In Machi
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Perl starts to use utf8 encoding internally to represent characters starting from 5.6. That is to say, there should be no problem in processing Chinese characters and other language characters. We only need to make good use of the encode module to make full use of the advantages of Perl utf8 characters.The following describes how to process Chinese text. For example, if you want to s
encode is to convert Unicode encoding into other encoded strings, such as Str2.encode (' gb2312 '), which translates Unicode-encoded strings into gb2312 encodings.Wakahara strings are not Unicode encoded and are encode directly, the system default encoding is decoded and then encode, which is Str2.
1. If you want to know the specific data type in nsnumber, the @ encode keyword will be used.
Use @ encode (Atype) to return the C string of this type, represented by const char. For example, @ encode (INT) returns I; @ encode (float) returns F.
Then, the const char * returned by the objctype method in nsvalue is okay
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