Ivy is a calculator with APL syntax and functions developed by Rob Pike with the Go programming language (itself developed by Pike and others). Built-in functions are written with one or more ASCII characters, and use either the C-like symbols of Go or short names such as
rot. With no looping constructs or recursion, Ivy is intended to perform computations and not for general-purpose programming. It emphasizes high-precision computation, using exact rationals when possible and high-precision floating-point numbers otherwise.
Ivy allows user-defined functions (called operators), but not higher-order operators; it has only the four built-in operators Reduce, Scan, Outer Product, and Inner Product. Functions are defined with the
op keyword, with a declaration that matches the way the function will be used followed by
= and a body of one or more lines (the result of the last is returned). Among APLs, this syntax most closely resembles that of A+.
|APL dialects |
|Maintained||APL+Win (APL*PLUS) ∙ APL2 ∙ APL64 ∙ APL\iv ∙ Aplette ∙ April ∙ Co-dfns ∙ Dyalog APL ∙ dzaima/APL ∙ Extended Dyalog APL ∙ GNU APL ∙ KAP ∙ NARS2000 ∙ Pometo|
|Historical||Iverson notation ∙ A Programming Language ∙ A+ (A) ∙ APL# ∙ APL.68000 ∙ APL.SV ∙ APLX ∙ APL\1130 ∙ APL\3000 ∙ APL\360 ∙ APL/700 ∙ NARS ∙ ngn/apl ∙ openAPL ∙ Rowan ∙ SAX ∙ SHARP APL ∙ VisualAPL (APLNext) ∙ VS APL ∙ York APL|
|Derivatives||AHPL ∙ BQN ∙ ELI ∙ I ∙ Ivy ∙ J ∙ Jelly ∙ Jellyfish ∙ K (Q, KDB+) ∙ Nial ∙ RAD|