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⊕

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Postfix increment statement for a mutable numerus place.

Aliases: postfix increment, increment statement

Syntax: <place> ⊕

Category#

mutation

Examples#

radix/corpus/incrementa/incrementa.fab (canonical · operator)#

Postfix increment statement for a mutable numerus place.

# =============================================================================
# ⊕ — Postfix increment statement for a mutable numerus place
# =============================================================================
#
# What this teaches:
#   • Postfix increment statement for a mutable numerus place.
#   • Related keywords: ⊖, varia, ←, numerus
#
# Common mistakes:
#   • Using `⊕` / `⊖` inside an expression — postfix increment/decrement are statements only and cannot appear inside larger expressions.
#
# See also: ⊖, varia, ←, numerus
# =============================================================================

# incrementa — postfix increment and decrement statements
#
# <place> ⊕   -- add 1 (statement only, no value)
# <place> ⊖   -- subtract 1
#
# Postfix forms are statements, not expressions. They cannot appear inside
# larger expressions. Operand must be a mutable numerus place.

main {
    var int count ← 0
    count ⊕
    # 1
    print count

    count ⊖
    # 0
    print count

    var int exclusivus ← 0
    for range 0‥3 const _ {
        exclusivus ⊕
    }
    # 3
    print exclusivus
}

Expected output:

1
0
3