Support in Common Programming Languages
| Language | Eager operators | Short-circuit operators | Result type |
|---|---|---|---|
| ABAP | none | and, or |
Boolean1 |
| Ada, Eiffel | and, or |
and then, or else |
Boolean |
| ALGOL 68 | and, &, ∧ ; or, ∨ | andf, orf (both user defined) | Boolean |
| C2 | none | &&, ||, ? |
Numeric (&&,||), opnd-dependent (?) |
| C++3 | &, | |
&&, ||, ? |
Boolean (&&,||), opnd-dependent (?) |
| Go, OCaml, Haskell | none | &&, || |
Boolean |
| C#, Java,
MATLAB R |
&, | |
&&, || |
Boolean |
| ColdFusion | none | AND, OR, &&, || |
Boolean |
| Erlang | and, or |
andalso, orelse |
Boolean |
| Fortran | .and., .or. |
Boolean | |
| JavaScript | none | &&, || |
Last value |
| Lisp, Lua, Scheme | none | and, or |
Last value |
| Lasso | none | and, or, &&, || |
Last value |
| Modula-2 | none | AND, OR |
Boolean |
| Oberon | none | &, OR |
Boolean |
| Pascal | and, or4 |
and_then, or_else5 |
Boolean |
| Perl, Ruby | &, | |
&&, and, ||, or |
Last value |
| PHP | none | &&, and, ||, or |
Boolean |
| Python | none | and, or |
Last value |
| Smalltalk | &, | |
and:, or: |
Boolean |
| Standard ML | Unknown | andalso, orelse |
Boolean |
| Visual Basic .NET | And, Or |
AndAlso, OrElse |
Boolean |
| VB Script, VB Classic, VBA | And, Or |
Select Case |
Numeric |
1 ABAP does not actually have a distinct boolean type.
2 C, before C99, did not actually have a distinct boolean type; logical operators returned 0 (for false) or 1 (for true).
3 When overloaded, operators && and || are eager and can return any type.
4 ISO Pascal allows but does not require short-circuiting.
5 ISO-10206 Extended Pascal supports and_then and or_else.
Read more about this topic: Short-circuit Evaluation
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