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Regular expressions (or regex) are a common and very versatile programming technique for manipulating strings. On Wikipedia you can use a limited version of regex called a Lua pattern to select and modify bits of text from a string. The pattern is a piece of code describing what you are looking for in the string.
This template selects a sub-string from the target string based on selected indices. The indices are 1-based. If the end index is omitted, it returns the rest of the string. One can also specify negative indices, in which case the substr is selected by counting from the end of the string.
The template takes a substring of ''text'' starting at ''start'' and containing ''length'' characters. Template parameters [Edit template data] Parameter Description Type Status Text 1 The substring to be trimmed. String required Numeric position 2 Numeric position of the starting character within the string Number required Count 3 Number of characters for the substring Number required See also
The string-search functions in Lua script can run extremely fast, comparing millions of characters per second. For example, a search of a 40,000-character article text, for 99 separate words (passed as 99 parameters in a template), ran within one second of Lua CPU clock time.
This module is subject to page protection.It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing.
String interning also reduces memory usage if there are many instances of the same string value; for instance, it is read from a network or from storage. Such strings may include magic numbers or network protocol information. For example, XML parsers may intern names of tags and attributes to save memory.
Lying off Nha Trang is the Hon Tre Island (Bamboo Island), with a major resort operated by the Vinpearl Group. The Vinpearl Cable Car, a gondola lift system, links the mainland to the five-star resort and theme park on Hon Tre Island. Nha Trang is a stopover for annual yacht races starting in Hong Kong.
Nha Trang station is the place that people of Nha Trang start to fight against the French Indochina. Now, Nha Trang station still keeps the French architecture. In front of the station, there is a park named Vo Van Ky park; at the time this station was opened, this park is a large garden of the railway station. There are two same building on ...