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:}} and templates {{strlen_quick}} and {{str_right}}.
See also
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Chuỗi con (chọn một đoạn các kí tự theo vị trí của nó trong chuỗi) |
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| {{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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Cắt gọt (chọn/xóa một đoạn trong chuỗi theo kiểu kí tự) |
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Chọn/xóa một mục cụ thể trong chuỗi |
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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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Chèn, thay thế và độ dài |
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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 | | {{Nowiki}} | Displays wikitext as plain text. |
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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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Phân tích và tìm kiếm |
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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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Các hàm sẵn có và các mô đun |
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