From Wolfram Institute Wiki
Revision as of 06:45, 8 May 2025
String-handling templates (help page) |
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Substring (select chunk of string by its position) |
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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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Trimming (select/remove chunk of string by character type) |
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Select/remove specific item from string |
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| {{delink}}, {{trim brackets}} | Removes wikilink brackets (wikicode); all or outer only. | | {{Plain text}} | Removes wikicode (formatting and brackets) | | {{PAGENAMEBASE}} | Trim off any parenthesis text at the end of a string (disambiguation). | | {{title disambig text}} | Returns text in parentheses at the end of a string (disambiguation). |
| | {{title year}} | Returns the 3-or-4-digit year from a pagename, if any. | | {{title decade}} | Returns the 4-digit decade from a pagename (e.g. "1740" from "Foo 1740s bar"), if any. | | {{title number}} | Returns any number from a pagename. | | {{WikiProjectbasename}} | Removes "WikiProject" 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 | | {{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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Analysis and searching |
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| {{Array}} | Array item manipulation and retrieval. | | {{a or an}} | Takes a noun and produces the appropriate indefinite article, based on whether the first letter is a vowel. | | {{in string}} | Returns optional string when given string is not found | | {{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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{{#if:|{{{content}}} }}{{#ifeq:|yes|}}
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