TAILIEUCHUNG - HandBooks Professional Java-C-Scrip-SQL part 58

Tham khảo tài liệu 'handbooks professional java-c-scrip-sql part 58', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | How Does the Regex Library Improve Your Programs Brings support for regular expressions to C Improves the robustness of input validation Regular expressions are very often used in text processing. For example there are a number of validation tasks that are suitable for regular expressions. Consider an application that requires the input to consist only of numbers. Another program might require a specific format such as three digits followed by a character then two more digits. You could validate ZIP Codes credit card numbers Social Security numbers or just about anything else and using regular expressions to do the validation is straightforward. Another typical area where regular expressions excel are text substitutionsthat is replacing some text with other text. Suppose you need to change the spelling of the word colour to color throughout a number of documents. Again regular expressions provide the best means to do thatincluding remembering to make the changes also for Colour and COLOUR and for the plural form colours the verb colourize and so forth. Yet another use case for regular expressions is in formatting of text. Many popular programming languagesPerl is a prime examplehave built-in support for regular expressions but that s not the case with C . Also the C Standard is silent when it comes to regexes. is a very complete and effective library for incorporating regular expressions in C programs and it even includes several different syntaxes that are used in widespread tools such as Perl grep and Emacs. It is one of the most renowned C libraries for working with regular expressions and is both easy to use and incredibly powerful. How Does Regex Fit with the Standard Library There is currently no support for regular expressions in the C Standard Library. This is unfortunate as there are numerous uses for regular expressions and users are sometimes deterred from using C for writing applications that need support for regular expressions.

• Kỹ thuật lập trình
• Thủ thuật lập trình
• hướng dẫn lập trình
• tài liệu lập trình
• học lập trình
• Java C Scrip SQL
• kỹ thuật lập trình
• kỹ năng lập trình
• bí quyết lập trình
• phương pháp lập trình
• tư liệu lập trình
• kĩ thuật lập trình
• kĩ năng lập trình
• AutoIT