العرضar

متغير

Translation status: العربية reader-locale proof. Term names and code fences follow the ar pack; supporting prose may still be English.

Declares a mutable binding.

Aliases: let, mutable

Syntax: متغير <type|_> <pattern> [← <expression>]

Category#

binding

Examples#

radix/corpus/varia/varia.fab (canonical · keyword)#

Declares a mutable binding.

# =============================================================================
# متغير — Declares a mutable binding.
# =============================================================================
#
# What this teaches:
#   • Mutable bindings — `متغير` for values that can be reassigned after declaration
#   • Immutable bindings — `ثابت` and `ليكن` for values that cannot be reassigned
#
# Common mistakes:
#   • declaring متغير when the binding is never reassigned — use ثابت instead (WARN013)
#
# See also: ثابت, ←, ↑
# =============================================================================




# Mutable and immutable variable declarations
#
# متغير <اسم> ← <expr>   -- mutable binding (may reassign)
# ثابت <اسم> ← <expr>   -- immutable binding (see ثابت/fixum.fab)
#
# GRAMMAR:
#   bindingStmt :← ('متغير' | 'ثابت') type? ident '←' expr
#
# EXPECTED OUTPUT:
#   0, 1, 11, "Salve, Mundus!", 30, "Vale"

main {
    # --- Mutable bindings with متغير ---

    var _ computus ← 0
    print computus

    computus ← 1
    print computus

    computus ← computus + 10
    print computus

    # --- Immutable bindings: ثابت _ and ليكن ---

    const _ salutatio ← "Salve, Mundus!"
    print salutatio

    # ليكن compresses repeated ثابت _ when chaining inferred locals
    let x ← 10
    let y ← 20
    let المجموع ← x + y
    print المجموع

    # --- Reassign only متغير bindings ---

    var _ nuntius ← "Salve"
    nuntius ← "Vale"
    print nuntius
}

Expected output:

0
1
11
Salve, Mundus!
30
Vale