tokenize | 易学教程

NSString tokenize in Objective-C

阅读更多关于 NSString tokenize in Objective-C

问题 What is the best way to tokenize/split a NSString in Objective-C? 回答1: Found this at http://borkware.com/quickies/one?topic=NSString (useful link): NSString *string = @"oop:ack:bork:greeble:ponies"; NSArray *chunks = [string componentsSeparatedByString: @":"]; Hope this helps! Adam 回答2: Everyone has mentioned componentsSeparatedByString: but you can also use CFStringTokenizer (remember that an NSString and CFString are interchangeable) which will tokenize natural languages too (like Chinese

Scanner vs. StringTokenizer vs. String.Split

阅读更多关于 Scanner vs. StringTokenizer vs. String.Split

问题 I just learned about Java\'s Scanner class and now I\'m wondering how it compares/competes with the StringTokenizer and String.Split. I know that the StringTokenizer and String.Split only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shopping for spliting? 回答1: They're essentially horses for courses. Scanner is designed for cases where you need to parse a string, pulling out data of different types. It's very flexible, but

How do I tokenize a string in C++?

阅读更多关于 How do I tokenize a string in C++?

问题 Java has a convenient split method: String str = \"The quick brown fox\"; String[] results = str.split(\" \"); Is there an easy way to do this in C++? 回答1: Your simple case can easily be built using the std::string::find method. However, take a look at Boost.Tokenizer. It's great. Boost generally has some very cool string tools. 回答2: The Boost tokenizer class can make this sort of thing quite simple: #include <iostream> #include <string> #include <boost/foreach.hpp> #include <boost/tokenizer

Is there a function to split a string in PL/SQL?

阅读更多关于 Is there a function to split a string in PL/SQL?

问题 I need to write a procedure to normalize a record that have multiple tokens concatenated by one char. I need to obtain these tokens splitting the string and insert each one as a new record in a table. Does Oracle have something like a \"split\" function? 回答1: You have to roll your own. E.g., /* from :http://www.builderau.com.au/architect/database/soa/Create-functions-to-join-and-split-strings-in-Oracle/0,339024547,339129882,00.htm select split('foo,bar,zoo') from dual; select * from table

What is the easiest/best/most correct way to iterate through the characters of a string in Java?

阅读更多关于 What is the easiest/best/most correct way to iterate through the characters of a string in Java?

问题 StringTokenizer ? Convert the String to a char[] and iterate over that? Something else? 回答1: I use a for loop to iterate the string and use charAt() to get each character to examine it. Since the String is implemented with an array, the charAt() method is a constant time operation. String s = "...stuff..."; for (int i = 0; i < s.length(); i++){ char c = s.charAt(i); //Process char } That's what I would do. It seems the easiest to me. As far as correctness goes, I don't believe that exists

Is there a function to split a string in PL/SQL?

阅读更多关于 Is there a function to split a string in PL/SQL?

I need to write a procedure to normalize a record that have multiple tokens concatenated by one char. I need to obtain these tokens splitting the string and insert each one as a new record in a table. Does Oracle have something like a "split" function? You have to roll your own. E.g., /* from :http://www.builderau.com.au/architect/database/soa/Create-functions-to-join-and-split-strings-in-Oracle/0,339024547,339129882,00.htm select split('foo,bar,zoo') from dual; select * from table(split('foo,bar,zoo')); pipelined function is SQL only (no PL/SQL !) */ create or replace type split_tbl as table

Splitting string into multiple rows in Oracle

阅读更多关于 Splitting string into multiple rows in Oracle

问题 I know this has been answered to some degree with PHP and MYSQL, but I was wondering if someone could teach me the simplest approach to splitting a string (comma delimited) into multiple rows in Oracle 10g (preferably) and 11g. The table is as follows: Name | Project | Error 108 test Err1, Err2, Err3 109 test2 Err1 I want to create the following: Name | Project | Error 108 Test Err1 108 Test Err2 108 Test Err3 109 Test2 Err1 I\'ve seen a few potential solutions around stack, however they only