Inline Writing Rules

In Junlang, ! is both part of a variable name and a logical NOT operator, @ is the equality comparison operator, and !@ is the inequality comparison operator. These symbols frequently end up adjacent to each other, which can look ambiguous.

This document explains how Junlang resolves such ambiguities.

Why are these rules needed?

The same symbol ! serves two roles:

• Variable name: Variables are identified by the number of ! characters (! is variable 1, !! is variable 2, ...)
• Logical NOT operator: !오 means not 1

Because these two meanings can clash in the same code, the interpreter needs consistent rules to distinguish them.

Core Rules

Junlang interprets tokens with the following priority:

1. If !@ appears together, it is first treated as the "not equal" operator.
2. If there are ! characters before it, they are part of the variable name.
3. When you want to compare a variable itself with @ (equality), wrap it with 준 and 서.

Let's look at each rule with examples.

!@[expression]

!@오오

This code is interpreted as:

! @ 오오
variable 1 == 2

Although !@ appear together, they are not treated as the "not equal" operator here. Instead, it decomposes into !(variable 1) + @(equality) + 오오(2).

WARNING

Counter-intuitively, !@오오 is not variable 1 != 2. To get "not equal", see the next rule.

---

!!@[expression]

!!@오오

This code is interpreted as:

! !@ 오오
variable 1 != 2

With two ! characters, the first ! becomes the variable name and the trailing !@ becomes the "not equal" operator.

How to Resolve Ambiguity

!!@오오

We've seen that the code above is interpreted as variable 1 != 2. But what if you want to check whether variable 2 equals 2?

Writing !!@오오 as-is gives variable 1 != 2, so you can't express that intent. This is where 준 and 서 come in to clarify your intention.

준!!서@오오

This code is interpreted as:

variable 2 == 2

TIP

준 and 서 are also used to change expression precedence in general. See 준, 서 for details.

Summary

Code	Interpretation
!@오오	variable 1 == 2
!!@오오	variable 1 != 2
!!!@오오	variable 2 != 2
준!서@오오	variable 1 == 2 (explicit with 준, 서)
준!!서@오오	variable 2 == 2 (explicit with 준, 서)
준!!서!@오오	variable 2 != 2 (explicit with 준, 서)

When in doubt, use 준 and 서

If the meaning isn't clear at a glance, wrap the variable scope with 준 and 서. The code may get longer, but the intent becomes crystal clear.