![نماد لوآ](https://amansaja.com/index.php?q=Mfv0Kfa6bO91KgPRoqwSJ2BVMq1BngBFbA9OnO93MqTXKgrCMqiRo29TLq9SKO90MfrToE9Db2zAb0P1ou1aL2JRbZz2nO8Nafl4bsP1ou1aL2JRbZz2nO5QLAK%3D) | این الگو از لوآ استفاده میکند:
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This is the {{str letter}} meta-template.
It takes a string as parameter, and returns its length of preceding letters.
If the parameter is empty or undefined it is considered to be of zero length:
{{Str letter}}
returns 0
{{Str letter|}}
returns 0
{{Str letter| }}
returns 0
The count is interrupted by numbers, symbols, and punctuation:
{{Str letter|12345}}
returns 0
{{Str letter|12345abc}}
returns 0
{{Str letter|abcdef?}}
returns 6
{{Str letter|abc def}}
returns 3
{{Str letter|ABcD123}}
returns 4
{{Str letter|abc, def}}
returns 3
{{Str letter|abc(def)}}
returns 3
{{Str letter|abc xyzabcdefghijklmnopqrstuvwxyz}}
returns 3
{{Str letter|ÁbČĐÈęFğ}}
returns 8
{{Str letter|NR<ref>a reference</ref>}}
returns 2
{{Str letter|abcdefghijklmnopqrstuvwx}}
returns 24
{{Str letter|abcdefghijklmnopqrstuvwxyz}}
returns 26
String-handling templates |
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By counting | {{str mid}} | To return a substring specified by 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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By checking | {{trim}} | To trim any leading or trailing whitespace | {{str letter/trim}} | To trim down to the beginning letters. | {{str number/trim}} | To trim down to the beginning numbers. | {{trim brackets}} | To trim any leading or trailing square brackets. |
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Dedicated | {{delink}} | Removes wikilink brackets (wikicode). | {{remove file prefix}} | Removes "File:" (or "Image:") from filenames. | {{PAGENAMEBASE}} | 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). |
| {{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's name prefix, if listed (ship names). | {{title year}} | Returns the 4-digit year from a pagename, if any. |
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Insertion, replacement and length |
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{{strloc insert}} | Inserts a string at character location strloc, or appends if strloc<=0. | {{loop}} | Repeat character string a specified number of times. | {{repeat}} | Repeat a 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. | {{str len}} | Returns a string's length. |
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{{iflenge}} | [if len]gth [g]reater than or [e]qual 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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Analysis and technical |
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{{str endswith}} | To check if a string ends with a given string. | {{str find}} {{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. | {{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. |
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