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