Changes for version 26.09 - 2026-09-09
- ADDED
- tetration_mod(a,k,m) modular tetration tetrationmod alias for tetration_mod
- solve_thue(D,k,N=1,bound=1e6,first_only=false) bounded binomial Thue solver
- prime_partitions(n,max_value=n) partitions into prime parts
- strict_prime_partitions(n,max_value=n) partitions into distinct prime parts
- lambda_inverse(n)
- lambda_inverse_len(n)
- lambda_inverse_min(n)
- lambda_inverse_max(n) inverse Carmichael lambda functions
- piltz_tau(n,k=2) k-fold divisor function
- schemmel_totient(n,k=1) k-th Schemmel totient function
- is_hyperperfect(n,k=1) generalized hyperperfect test
- arithmetic_mean(...)
- geometric_mean(...)
- harmonic_mean(...)
- median(...)
- variance(...)
- stddev(...)
- avg(...) alias for arithmetic_mean Also available as Math functions and Array methods.
- Date() / Date(timestamp) / Date(string) Date(y,m,d) / Date(y,m,d,h,min,s) / Date(other_date) expanded Date constructors
- Date.from_ymd(...)
- Date.from_string(str,format)
- Date.days_until
- Date.is_same_day
- Date.is_between
- Date.end_of_month
- Date.is_future
- Date.is_past
- Date.is_today
- Date.age
- Date.quarter
- Date.is_leap_year
- Date.is_weekend
- Date.is_weekday
- Date.add_weeks
- Set.is_disjoint
- Set.powerset
- Set.is_proper_subset
- Set.is_proper_superset
- Set.sample(n)
- Set.pick
- Bag.scale(factor)
- Bag.to_h
- Bag.relative_frequencies
- Bag.mode
- Bag.variety
- Range.take_while {...}
- Range.zip(other)
- Range.group_by {...}
- Range.each_kv {...}
- Range.min_max
- Range.partition {...}
- Enumerator.drop_while {...}
- Enumerator.sum
- Enumerator.min
- Enumerator.max
- Enumerator.reduce(block,initial=nil)
- Lazy.zip(other)
- Lazy.uniq
- Lazy.take(n)
- Lazy.drop(n)
- Dir.files
- Dir.subdirs
- Dir.entries
- Dir.each {...}
- Dir.glob(pattern)
- Dir.size
- DirHandle.count
- DirHandle.map {...}
- DirHandle.grep {...}
- DirHandle.walk {...}
- File.backup
- File.is_newer_than
- File.is_older_than
- File.extension
- File.basename_without_ext
- File.lines
- File.each_line {...}
- FileHandle.peek_char
- FileHandle.copy now also accepts a path
- FileHandle.each_kv {...}
- FileHandle.flush
- Pipe.slurp
- Pipe.write_all(data)
- Sys.getenv
- Sys.setenv
- Sys.env
- Polynomial.is_monic
- Polynomial.compose(p,q)
- PolynomialMod.is_unit
- Quadratic.roots both roots [t,t']
- Quadratic.discriminant
- Quadratic.is_real_embedding
- Fraction.mediant(other)
- Fraction.reduce
- Matrix.is_upper_triangular
- Matrix.is_lower_triangular
- Matrix.is_diagonal
- Matrix.is_identity
- Matrix.is_orthogonal
- Matrix.is_symmetric
- Matrix.rank
- Matrix.trace
- Matrix.each_row {...}
- Matrix.each_column {...}
- Vector.project(onto)
- Vector.reject(onto)
- Vector.normalize
- Vector.lerp(other,t)
- Object.is_a now accepts multiple classes
- Object.respond_to now accepts multiple method names
- Object.in(collection)
- Object.tap {...}
- Object.then {...}
- Block.constant(value)
- Block.retry(n)
- Block.curry(...)
- Block.negate
- Block.pipe(other)
- Block.once
- Regex.is_match(string)
- Match.pre_match
- Match.post_match
- LazyMethod.steps
- String.pad_left / String.pad_right
- String.delete_prefix / String.delete_suffix
- String.swapcase
- String.common_prefix
- String.common_suffix
- String.wrap
- Array.squeeze
- Array.squeeze_by
- Array.chunk_while
- FUNCTIONALITY AND PERFORMANCE
- Polynomial.eval and PolyMod.eval now use Horner's method for faster polynomial evaluation.
- strict_partitions and multisets now construct objects only when a partition is complete, reducing unnecessary allocations.
- FIXES
- Fixed PolyMod.normalize_to_monic for polynomials with non-native exponents.
- DOCUMENTATION
- Added additional usage examples throughout Number.pod.
- Improved, corrected, and extended PolynomialMod.pod and Polynomial.pod.
Documentation
The Sidef Programming Language interpreter
Modules
The Sidef programming language
Deparse Sidef AST to Perl source code
Deparse Sidef abstract syntax trees back into Sidef source code
Mathematical functions and algorithms for Sidef
Functional interface for Perl modules used from Sidef
Object-oriented interface for Perl modules used from Sidef
Type conversion methods for Sidef objects
Lazy iterator object for generating and processing custom sequences.
Lazy evaluation wrapper that computes values only when needed.
Deferred, chainable method calls.
Base class providing the common interface for all Sidef objects.
AST optimization and constant folding for Sidef programs
Parser for the Sidef programming language
Signal handling interface for Sidef
System-level operations and utilities
Date and time object with parsing, formatting, arithmetic, and calendar operations.
Representation of time as Unix epoch seconds
Dynamic ordered collection with rich functional, numeric, and utility methods.
Mathematical matrix operations in Sidef
Two-element key-value pair object used throughout the language.
Mathematical vector operations in Sidef
Executable code block (closure) with lexical scope and callable behavior.
Fork object for parallel process execution
Exception handling block in Sidef
Boolean value type supporting logical operations and conversions.
Shell command execution via backticks
Directory manipulation and navigation in Sidef
Directory handle object for iterating and manipulating directories.
File manipulation and information retrieval
File handle object for reading, writing, and managing files.
Interface for creating and managing pipe handles
Socket networking interface for Sidef
An open socket connection, for network communication
File status information interface
Associative hash table mapping keys to values with convenient collection methods.
The Null type in Sidef
Arbitrary-precision complex number type with advanced mathematical operations.
A ratio of two numeric (or symbolic) values.
Gaussian integer arithmetic in Sidef
Modular arithmetic in Sidef
Arbitrary-precision numeric type providing extensive mathematical and number-theoretic functionality.
Polynomial type supporting symbolic manipulation and algebraic operations.
Polynomial type over finite rings with modular arithmetic operations.
Elements of a quadratic ring Z[t] / (t^2 - q*t - p)
Quaternion number implementation
Bridge for evaluating Perl code within Sidef
Range class for representing sequences of values
Numeric range object supporting iteration, slicing, and lazy sequences.
String range objects for iteration and manipulation
Regular expression match object exposing captures and match metadata.
Regular expression type for pattern matching, searching, and text substitution.
A multiset (bag) data structure for Sidef
Unordered collection of unique elements supporting mathematical set operations.
Unicode string type with comprehensive text processing and manipulation methods.
Command-line argument parsing for Sidef's MAIN function
Represents a named parameter used in function and method calls.