squidpony.squidmath

Class Hashers

java.lang.Object

squidpony.squidmath.Hashers

public class Hashers
extends java.lang.Object

Additional implementations of the CrossHash.IHasher interface for more specialized uses, like for use in an OrderedSet or OrderedMap with String keys that should use case-insensitive equality/hashing. Created by Tommy Ettinger on 4/15/2017.

Field Summary

Fields

Modifier and Type	Field and Description
static CrossHash.IHasher	caseInsensitiveStringHasher Hashes and equality-checks CharSequences, such as Strings and StringBuilders, using case-insensitive comparison in a cross-platform way.
static CrossHash.IHasher	identifierOnlyStringHasher Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but only considers valid chars that are valid components of Java identifiers (it does not check that the Strings are valid identifiers, but considers only letters, digits, currency symbols, underscores (and related underscore-like characters), and a few other types of glyph, ignoring whitespace and most punctuation marks), and works in a cross-platform way.
static CrossHash.IHasher	letterOnlyStringHasher Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but only considers letters (that is, characters that are in the Unicode category "L", including A-Z, a-z, most characters used in most non-English languages (katakana glyphs from Japanese count as letters, for instance)), and works in a cross-platform way.
static CrossHash.IHasher	noLetterStringHasher Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but does not consider letters (that is, characters that are in the Unicode category "L", including A-Z, a-z, most characters used in most non-English languages (katakana glyphs from Japanese count as letters, for instance)), and works in a cross-platform way.
static CrossHash.IHasher	noNumberStringHasher Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but does not consider any number glyphs (Unicode category "N", including 0-9, but also various numbers in other languages, such as the dedicated Roman numeral characters), and works in a cross-platform way.
static CrossHash.IHasher	noSpaceStringHasher Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but does not consider whitespace (including space, newline, carriage return, tab, and so on), and works in a cross-platform way.

Constructor Summary

Constructors

Constructor and Description
Hashers()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

caseInsensitiveStringHasher

public static final CrossHash.IHasher caseInsensitiveStringHasher

Hashes and equality-checks CharSequences, such as Strings and StringBuilders, using case-insensitive comparison in a cross-platform way.

letterOnlyStringHasher

public static final CrossHash.IHasher letterOnlyStringHasher

Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but only considers letters (that is, characters that are in the Unicode category "L", including A-Z, a-z, most characters used in most non-English languages (katakana glyphs from Japanese count as letters, for instance)), and works in a cross-platform way.

identifierOnlyStringHasher

public static final CrossHash.IHasher identifierOnlyStringHasher

Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but only considers valid chars that are valid components of Java identifiers (it does not check that the Strings are valid identifiers, but considers only letters, digits, currency symbols, underscores (and related underscore-like characters), and a few other types of glyph, ignoring whitespace and most punctuation marks), and works in a cross-platform way.

noSpaceStringHasher

public static final CrossHash.IHasher noSpaceStringHasher

Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but does not consider whitespace (including space, newline, carriage return, tab, and so on), and works in a cross-platform way.

noNumberStringHasher

public static final CrossHash.IHasher noNumberStringHasher

Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but does not consider any number glyphs (Unicode category "N", including 0-9, but also various numbers in other languages, such as the dedicated Roman numeral characters), and works in a cross-platform way.

noLetterStringHasher

public static final CrossHash.IHasher noLetterStringHasher

Hashes and equality-checks CharSequences, such as Strings and StringBuilders, but does not consider letters (that is, characters that are in the Unicode category "L", including A-Z, a-z, most characters used in most non-English languages (katakana glyphs from Japanese count as letters, for instance)), and works in a cross-platform way.

Constructor Detail

Hashers

public Hashers()