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Usage
{{Trim leading | <input> | <prefix> }}
Trims up to six instances of <prefix> (such as: 0 or "anti-") from the beginning of <input>. <Prefix> is set to "0" by default (for removing leading zeroes from numbers). Template will not properly work beyond the first whitespace in the input.
Limitations
- Up to 100 chararacters in the input string. If possible, first check length of input string using {{Str len}}. Using strings longer than 100 characters may result in the error "max index is 100 for str_sub".
- Limited set of characters.
- Snags on whitespace.
- Expensive.
Examples
{{Trim leading |duck duck duck goose |duck}} → duck duck goose
{{Trim leading | duckduckduckgoose |duck}} → goose
{{Trim leading | 00000034 }} → 34
{{Trim leading | aaaaaa34| a }} → 34
{{Trim leading | U+0034|U+}} → 0034
{{Trim leading |anti-anti-neutrino |anti-}} → neutrino
Technical
This template uses parser function {padleft}. It formerly called 6 subtemplates: Template:Trim leading/1, /2 ... /6, which are all functionally identical, allowing for up to six instantiations of prefix to be removed.
See also
String handling templates |
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| As of February 2013, these templates are being optimised using Lua modules. | | | Trim by counting |
- {{Str mid}} – To return a substring, specified by its position and length.
- {{Trunc}} – To trim down to a specified number of characters.
- {{Str left}} – To trim down to a specified number of characters, or duplicate the string to a specified number.
- {{Str crop}} – To crop a specified number of characters off the end.
- {{Chop head and tail}} – To crop a specified number of characters off the beginning and end.
- {{Str right}} – To trim the first specified number of characters.
- {{Str rightc}} – To return a number of characters from the end, returns a parameter if the string is empty.
- {{Str rightmost}} – To trim down to the last specified number of characters.
- {{Str sub old}} – To trim down to a specified number, starting at a given number from the left.
- {{Str sub new}} – Select a substr based on starting and ending index.
- {{Str index}} – Returns a given character from a string, but not accented letters.
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| | Trim by checking | |
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| | Insert strings |
- {{Loop}} – Repeat character string n times
- {{Replace}} – Returns the string, after replacing all occurrences of a specified string with another string.
- {{Strloc insert}} – Inserts a string at character location strloc, or appends if strloc<=0.
- {{Strloc prefix}} – Extracts string prefix up to location strloc, or whole string if strloc<=0.
- {{Str rep}} – Returns the string, after replacing the first occurrence of a specified string with another string.
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| | Length |
- {{Str len}} – Returns a string's length.
- {{iflenge}} – IF LENgth Greater than or Equal to.
- {{Str ≥ len}} – To check if a string is "longer or equally long" or "shorter" than a given length.
- {{Str ≤ len}} – To check if a string is "shorter or equally long" or "longer" than a given length.
- {{Str ≠ len}} – To check if a string is "not equal" or "equal" to a given length.
- {{Str ≤ ≥ len}} – To check if a string is "shorter", "equal", or "longer" than a given length.
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| | Analyse string |
- {{Str endswith}} – To check if a string ends with a given string.
- {{Str find}} – Returns the numerical location of a given string in a string.
- {{Strfind short}} – Returns the numerical location of a given string in a string.
- {{Str find0}} – Zero-based substring search.
- {{Str sub find}} – Searches a substring in a string at the given offset.
- {{ASCII code}} – Returns the ASCII value of a single character.
- {{Str letter}} – Returns the number of letters that begin a string.
- {{Str number}} – Returns the number of numbers that begin a string.
- {{Str gtr str}} – Compares two strings for alphabetical order, and returns a value accordingly.
- {{a or an}} – Takes a noun and produces the appropriate indefinite article, based on whether the first letter is a vowel.
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| | Trim, dedicated |
- {{WikiProjectbasename}} - Removes "WikiProject" from a pagename
- {{Remove unranked}} - Removes the string "unranked_" from the left of a string (taxonomy).
- {{Ship prefix}} – Returns the length of a ship name prefix, if listed (ship names).
- {{Title without disambig}} – To trim off any parenthesis text at the end of a string (disambiguation).
- {{Title disambig text}} – Returns text in parenthesis at the end of a string (disambiguation).
- {{Unlink}} – Removes wikilink brackets (wikicode).
- {{Remove file prefix}}—Removes "File:" or "Image:" from filenames.
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| | Technical developments | |
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