Usage
{{Chop head and tail|<string>|<number>}}
This template removes <number> characters from the start and end of <string>.
{{Chop head and tail|12345654321|3}} gives 45654.
Unlinking
This template can be used to "unlink" a linked parameter.
{{Chop head and tail|[[Einstein]]|2}} results in Einstein.
Because the default value of <number> is 2, this can be shortened to {{Chop head and tail|[[Einstein]]}}
Limitations
- Expensive.
- When used on strings with characters that carry a meaning in wiki-layout, this template will interpret the character as a layout instruction (bugzilla:12974). For example,
{{Chop head and tail|[[123;456]]}} renders as
123;456
- Supports the character set as defined by {{Str index/getchar}}, so that e.g.
{{Chop head and tail|[[Nürnberg]]}} renders correctly as Nürnberg. However, not all characters are in this set.
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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