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Template:Str ≥ len

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This template uses Lua:

This is the {{str ≥ len }} meta-template.

It helps other templates check if a string is "longer or equally long" vs. "shorter" than a given length.

Usage

This template takes 3 to 4 unnamed parameters.

Here is how to check if the string "abcde" is 4 characters or more: 

{{str ≥ len | abcde | 4
| Equal or longer.
| Shorter.
}}

Which returns this:

Equal or longer.

Templates have a problem handling parameter data that contains equal signs "=". But that is easily solved by using numbered parameters. Here we check if the string "ab=cde" is 100 characters or more: 

{{str ≥ len 
| 1 = ab=cde 
| 2 = 100
| 3 = Equal "=" or longer.
| 4 = Shorter, not "=".
}}

Which returns this:

Shorter, not "=".

It probably is a good habit to always use the numbered parameters, since you might not know beforehand exactly how the data will look that your template will feed to this meta-template.

Parameters

{{str ≥ len 
| 1 = A string
| 2 = A length
| 3 = Data to return/render when "longer than or equally long".
| 4 = Data to return/render when "shorter than".
}}

Empty or undefined strings are considered to be of 0 length.

Length values below 0 are considered to be 0.

Technical details

The potential alternative templates names {{str >= len}} or (for the opposite) {{str < len}} do not work in MediaWiki.

Templates have problems to handle parameter data that contains pipes "|", unless the pipe is inside another template {{name|param1}} or inside a piped link [[Help:Template|help]]. Thus templates can not handle wikitables as input unless you escape them by using the {{!}} template. This makes it hard to use wikitables as parameters to templates. Instead the usual solution is to use "HTML wikimarkup" for the table code, which is more robust.

See also

String-handling templates (help page)
Substring (select chunk of string by its position)
{{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.
Trimming (select/remove chunk of string by character type)
{{trim }} Trim any leading or trailing whitespace
{{str letter/trim }} Trim down to the beginning letters.
{{str number/trim }} Trim down to the beginning numbers.
{{trim brackets }} Trim any leading or trailing square brackets.
{{trim quotes }} Trim leading or trailing matching quotes.
{{trim leading }} Trim up to six instances of specified <prefix>.
{{string split }} Extract a short string from a long string.
{{first word }} Trim down to the first space.
{{remove first word }} Remove anything before the first space.
{{last word }} Trim down from the last space.
{{remove last word }} Remove anything after the last space.
Select/remove specific item from string
{{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.
Insertion, replacement and length
{{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.
Analysis and searching
{{str 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.
{{str count }} Count the number of occurrences of a pattern within a string.
{{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.
Modules and built-in functions
The above documentation is transcluded from Template:Str ≥ len/doc. (edit | history)
Editors can experiment in this template's sandbox (edit | diff) and testcases (create) pages.
Add categories to the /doc subpage. Subpages of this template.
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