String Module

The string module contains functions to analyze and modify text. In Lau, strings are wrapped in double quotes "" and have a maximum length of 10,000 characters.

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🔡 Case Manipulation

These functions are useful for making chat commands “case-insensitive” (so your drone understands both “START” and “start”).

Function	Description
string.upper(text)	Converts every character to UPPERCASE.
string.lower(text)	Converts every character to lowercase.

lau-compiler.exe

▶ RUN CODE

varol toUpper = "shouting"
varol toLower = "WHISPERING"

print(string.upper(toUpper))
print(string.lower(toLower))

OUTPUT:

SHOUTING whispering

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🔍 Searching & Analysis

Use these functions to find specific words within a message or to check how long a string is.

Function	Returns	Description
string.len(text)	number	Returns the total number of characters.
string.find(text, target)	number	Returns the start index of the target word, or null.
string.match(text, pattern)	string	Searches for a pattern and returns the match.

lau-compiler.exe

▶ RUN CODE

varol input = "Hello Drone"

print("Length: " + string.len(input))

varol pos = string.find(input, "Drone")
print("Found 'Drone' at index: " + pos)

OUTPUT:

Length: 10 Found 'Drone' at index: 7

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✂️ Modification & Subsets

These functions allow you to cut strings into pieces or replace specific words.

Function	Description
string.sub(text, start, end?)	Cuts the string from the start index to the end index.
string.gsub(text, pattern, repl)	Global Substitution: Replaces all instances of a word with another.

lau-compiler.exe

▶ RUN CODE

-- Substitution
varol base = "Lau is bad"
varol fixed = string.gsub(base, "bad", "cool")
print("Result: " + fixed)

-- Substring (cutting)
varol fullName = "Unit-Drone-V2"
varol nick = string.sub(fullName, 6, 10)
print("Nickname: " + nick)

OUTPUT:

Result: Lau is cool Nickname: Drone

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💡 Pro Tip: String Concatenation

Unlike standard Lua which uses .., Lau uses the + operator to join strings and numbers together.

varol weight = 2.5
player.sent("The crop weighs " + weight + "kg")

System Limits

A single string can hold a maximum of 10,000 characters. Attempting to create a larger string will result in a memory overflow error, remember this limit is useless because a single script can only hold 5,000 characters.