ProjectLambda v3.7.0

• Reimplementing the destructor using BFS avoids the problem of possible stack overflow in the destructor.
• Added an experimental version (lambda_exp) designed to avoid double-counting the same part of the equation during a run (there may be unknown problems).

ProjectLambda v3.6.2

• With tail call optimization, the cases that would result in "recursion limit exceeded" runtime errors are greatly reduced.
• Supports keyboard interrupts during runtime. On Windows systems, pressing the Esc key during runtime to stop the calculation. On Linux systems, use Ctrl+C instead.

ProjectLambda v3.6.0

• Added Eager-evaluated function to facilitate output, see README.md.
• The original lite version was renamed to CBV (Call-by-value) version, and the original full version was deleted and replaced with the new CBN (Call-by-need) version. The differences between the two versions can be found in README.md.
• Added a ... (Nil) built-in function. When it is applied to any argument, it gets itself.

ProjectLambda v3.3.0

• Reduced the priority of |PAR in expressions. Now + $a $a |a (* 100 100) can be written directly as + $a $a |a * 100 100.
• Performance is improved by reducing copy construction during computation.

Full Changelog: v3.2.0...v3.3.0

v3.2.0

• Lambda expression syntax changed from ARG: EXPR to \ARG EXPR.
• Added EXPR |PAR ARG syntactic sugar.
• Added a simplified version that removes fmt and !VAR syntax.

Full Changelog: v3.0.2...v3.2.0

ProjectLambda v3.0.2

• Added exception handling for divide-by-zero cases.
• Increased stack size to 4GiB.

ProjectLambda v3.0.1

• Performance fixes for the deepcopy function was made.

ProjectLambda v3.0.0

See commits.

ProjectLambda v2.0

• The syntax for lambda expressions has been redesigned to be more understandable and closer to the standard form of Lambda calculus. (see README.md)
• Added error reporting and handling for exceptions such as runtime exceptions and stack overflows.
• Fixed a problem caused by the lazy evaluation mechanism that the function expression defined by the set command would change when it was called.

v1.5

• Added a version that uses libgmp for large integer operations.