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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
- New code should strongly consider {{#invoke:string|replace}} or {{#invoke:MultiReplace|main}}.
- For backward compatibility, both the input and pattern string are trimmed of surrounding whitespace before processing begins. This means you cannot remove three instances of "the " from "the the the thing"; instead you will remove one instance of "the".
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
See also
String-handling templates (help page) |
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Substring (select chunk of string by its position) |
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{{#invoke:string|sub}}
{{str sub new}} | Select a substring based on starting and ending index counted in either direction. | | {{str left}} | Keep the first N characters of a string, or duplicate it to N characters. | | {{str crop}} | Return all but the last N characters of a string. | | {{str index}} | Return the N-th character of a string. |
| | {{str right}} | Return substring starting at N-th character to end of string. | | {{str rightc}} | Return the last N characters of a string; or a given value if empty. | | {{str sub old}} | Return substring of given length starting at N-th character. |
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Trimming (select/remove chunk of string by character type) |
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Select/remove specific item from string |
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| | | {{ship prefix}} | Returns the length of a ship's name prefix, if listed (ship names). | | {{title year}} | Returns the 3-or-4-digit year from a pagename, if any. | | {{title decade}} | Returns the 4-digit decade (e.g. "1740s") from a pagename, if any. | | {{title number}} | Returns any number from a pagename. |
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Insertion, replacement and length |
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| {{loop}} | Repeat character string a specified number of times. | | {{replace}} | Returns the string, after replacing all occurrences of a specified string with another string. | | {{str rep}} | Returns the string, after replacing the first occurrence of a specified string with another string. | | {{digits}} | Returns the string, after removing all characters that are not digits 0–9 | | {{Plain text}}, {{Nowiki}} | Strips wikicode from a string. |
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| {{str len}} | Returns a string's length. | | {{str ≥ len}} | Check if a string is "longer or equally long" or "shorter" than a given length. | | {{str ≤ len}} | Check if a string is "shorter or equally long" or "longer" than a given length. | | {{str ≠ len}} | Check if a string is "not equal" or "equal" to a given length. |
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Analysis and searching |
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{{#invoke:string2|startswith}}
{{str endswith}} | Check if a string starts or ends with a given string. | | {{str find}}, {{strfind short}} | Returns the numerical location of a given string in a string. | | {{in string}} | Returns optional string when given string is not found | | {{str count}} | Count the number of occurrences of a pattern within a string. |
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| {{a or an}} | Takes a noun and produces the appropriate indefinite article, based on whether the first letter is a vowel. | | {{Isnumeric}} | Returns number when true, blank when not numeric. | | {{str letter}} | Returns the number of letters that begin a string. | | {{str number}} | Returns the number of numbers that begin a string. |
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Modules and built-in functions |
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