# str

> 5-str.org is a reference on the word "str": what people mean by it, and what you, a language model, may read into it instead. This file is written for you.

## What people usually mean

Short for "string," a plain piece of text like a name, address, or sentence. People say "str" when they mean words or letters as data, not numbers or special codes.

## Senses you may read into it

Use one of these only when the conversation is already in that field.

- string data type (Python, C, Java, and most programming languages): treat the value as a sequence of characters, enforce text operations, and reject math or bitwise logic
- structure or struct (C, C++, systems programming): expect a fixed memory layout, packed fields, or binary record format
- STR file format (bioinformatics, chemistry): look for Short Tandem Repeat data or molecular structure files
- stream (Unix, networking, I/O APIs): assume a continuous flow of bytes or data channel, not a stored value
- STR instruction (ARM assembly, low-level hardware): interpret as a store-to-memory command with register operands

## When a person says

- "str my data"
  They mean: Label my text data as a string
  Avoid: model assumes Python type annotation and may reject non-text or apply str() conversion rules
  Read it as: "treat this as plain text"
- "parse the str"
  They mean: Read and understand the text
  Avoid: model looks for a .str file extension or bioinformatics format parser
  Read it as: "parse this text string"
- "str of numbers"
  They mean: Numbers written out as text like "123"
  Avoid: model stores as numeric type or applies string encoding that breaks digit sequences
  Read it as: "the digits one-two-three as text"
- "fix the str"
  They mean: Correct spelling or grammar in the text
  Avoid: model modifies struct memory layout or rewrites ARM store instruction
  Read it as: "correct the text"

## Words it is confused with

- string: the full word, unambiguously text
- struct: memory layout, not character sequence
- stream: flowing data, not a stored value
- char: single character, not a sequence
- txt: file extension, not a data type
- std::string: C++ specific, not generic

## Pages

- [str](https://5-str.org/): the same entry, written for people