helper/helper library

Helper functions used for extension methods. See heart.dart for more extensive documentation.

Constants

kWhitespaceCodes → const List<int>: Decimal form. Used for words.

Functions

ascendingList<T>(Iterable<T> it) → List<T>: Regular sorted list.
averageString(String s) → String: String from average of character codes.
backwardsList<T>(Iterable<T> l) → List<T>: Reversed, return List.
backwardsString(String s) → String: Reverse a String.
bigContains(Iterable l, dynamic v) → bool: Checks if iterable contains element with bigEquals
bigEquals(dynamic a, dynamic b) → bool: Check for equality of multiple data types
chr(int code) → String: Get character from character code
chrs(Iterable<int> characterCodes) → String: Get a String from character codes
concatLists<T>(Iterable<Iterable<T>> lists) → List<T>: Combine lists into one.
concatStrings(Iterable<String> l) → String: Combine Strings into one.
countList<T>(Iterable<T> it, T element) → int: Count number of occurrences in an iterable.
countString(String sub, String original) → int: Count number of occurrences in a String.
cycleList<T>(int n, Iterable<T> it) → List<T>: Repeat elements of a list n times
deepContains(Iterable l, dynamic v) → bool: Uses deepEquals to check if iterable contains a given element.
deepEquals(Object? e1, Object? e2) → bool: Check for equality of multiple data types, including nested iterables.
descendingList<T>(Iterable<T> it) → List<T>: Reversed sorted list.
dropList<T>(int n, Iterable<T> l) → List<T>: Drop first n elements.
dropString(int n, String s) → String: Drop first n characters.
dropWhileList<T>(bool dropFunction(T sub), Iterable<T> it) → List<T>: Drop first n elements that meet criteria.
dropWhileString(bool dropFunction(String sub), String s) → String: Drop first n characters that meet criteria.
elemIndicesList<T>(T element, Iterable<T> it) → List<int>: List of every index of element in it
elemIndicesString(String sub, String original) → List<int>: List of every index of sub in original
filterList<T>(bool filterFunction(T sub), Iterable<T> original) → List<T>: Only keep elements that meet criteria
filterString(bool filterFunction(String sub), String original) → String: Only keep characters that meet criteria
greaterThanIterable<T>(Iterable<T> it1, Iterable<T> it2) → bool: For > and < operators for Iterables
greaterThanListNum<num>(Iterable<num> it1, Iterable<num> it2) → bool: To compare Strings by code units.
greaterThanString(String s1, String s2) → bool: Compare Strings by code units
groupByList<T>(bool groupFunction(T a, T b), Iterable<T> it) → List<List<T>>: Group consecutive elements together if they meet criteria.
groupByString(bool groupFunction(String a, String b), String s) → List<String>: Group characters together if they meet criteria.
groupList<T>(Iterable<T> it) → List<List<T>>: Group consecutive equal elements together.
groupString(String s) → List<String>: Group consecutive characters together if they are equal.
headList<T>(Iterable<T> it) → T?: Returns first element.
headString(String s) → String?: Returns first character.
incrementString(String s, int n) → String: Increment or decrement Strings, used for ^ operator.
initsList<T>(Iterable<T> it) → List<List<T>>: Returns a List of Lists by adding one element at a time.
initsString(String s) → List<String>?: Returns a List of Strings by adding one character at a time.
insertInOrder<T>(T n, Iterable<T> it) → List<T>: Insert an element before the first greater element
insertInOrderString(String sub, String original) → String: Insert a character before the first greater character
intercalateList<T>(Iterable<T> sub, Iterable<Iterable<T>> it) → List<T>: Insert element between other elements and concatenate.
intercalateString(String s, Iterable<String> l) → String: Insert a String between other Strings and concatenate.
interleaveList<T>(Iterable<T> it1, Iterable<T> it2) → List<T>: Join two iterables by taking turns.
interleaveString(String s1, String s2) → String: Join two Strings by taking turns.
intersperseList<T>(T v, Iterable<T> it) → List<T>: Insert an element between other elements
intersperseString(String i, String original) → String: Insert character between other characters
isLowerCase(String s, bool ignoreSymbols) → bool: Check if characters of a String are lowercase.
isUpperCase(String s, bool ignoreSymbols) → bool: Check if characters of a String are uppercase.
lastString(String s) → String?: Returns last character.
lessThanString(String s1, String s2) → bool: Compare Strings by code units
letterCount(String original, bool keepWhitespace) → int: Count characters with or without whitespace.
letters(String s, bool keepWhitespace) → List<String>: Split a String into a List of characters.
listAverage(Iterable<num> it) → double: Average (mean) of numbers.
listIntersect<T>(Iterable<T> original, Iterable<T> input) → List<T>: Keep only elements from input
listNub<T>(Iterable<T> original, [Iterable<T>? itemsToNub]) → List<T>: Remove duplicate elements.
listSubtract<T>(Iterable<T> original, Iterable<T> sublist) → List<T>: Subtract elements one at a time
listSubtractAll<T>(Iterable<T> original, Iterable<T> sublist) → List<T>: Subtract all elements that are in sublist
nums(int a, [int? b, int? step]) → List<int>: Generate a List of integers
productNum<T extends num>(Iterable<T> l) → dynamic: Multiply all elements.
productOfElements(Iterable<num> l) → num: Multiply elements together
removeWhitespace(String s) → String: Remove all whitespace from a String
replaceAllList<T>(Iterable<T> it, T from, [T? to]) → List<T>: Delete all occurrences, or replace with to.
replaceList<T>(Iterable<T> it, bool replaceAll, T from, [dynamic to]) → List<T>: Delete first occurrence, or replace with to
reversedSortedString(String s) → String: Sort String in descending order.
riffleInList<T>(Iterable<T> it) → List<T>: Split in half, interleave second half first.
riffleInString(String s) → String: Split in half, interleave second half first.
riffleOutList<T>(Iterable<T> it) → List<T>: Split in half, interleave together.
riffleOutString(String s) → String: Split in half, interleave together.
shuffledList<T>(Iterable<T> it, bool cryptographicallySecure) → List<T>: Return a shuffled List.
shuffledString(String s, bool cryptographicallySecure) → String: Return a shuffled String.
sortedString(String s) → String: Sort string by character codes.
splitAtList<T>(int n, Iterable<T> it) → List<List<T>>: Split iterable into two.
splitAtString(int n, String s) → List<String>: Split string into two.
stringAny(bool anyFunction(String sub), String s) → bool: Check if any characters meet criteria
stringEvery(bool allFunction(String element), String s) → bool: Check if every character meets criteria
stringIntersection(String original, String input) → String: Keep only characters from input
stringNub(String s, String? charactersToNub) → String: Remove duplicate characters.
stringSubtract(String original, String charsToDelete) → String: Subtract characters one at at ime from charsToDelete
stringSubtractAll(String original, String charsToDelete) → String: Subtract all characters that are in charsToDelete
sumNum<T extends num>(Iterable<T> l) → dynamic: Sum elements.
tailList<T>(Iterable<T> it) → List<T>?: Returns everything but the first element.
tailsList<T>(Iterable<T> l) → List<List<T>>: Returns everything but first element.
tailsString(String s) → List<String>: Returns a list of lists by removing one character at a time.
tailString(String s) → String?: Returns everything but the first character.
toStringList<T>(Iterable<T> l) → List<String>: Convert all elements to Strings.
unionList<T>(Iterable<T> original, Iterable<T> input) → List<T>: Get new elements from input
unionString(String original, String input) → String: Get new characters from input.
unwords(Iterable<String> listOfWords) → String: Combines Strings into one with spaces in between.
wordCount(String s) → int: Count number of words separated by whitespace.
words(String original) → List<String>: Separate a String into a List of words.
zip2<T>(Iterable<Iterable<T>> it, dynamic zipFunction(T a, T b)) → List: Combine elements of two iterables into pairs and perform a function between them.
zip3<T>(Iterable<Iterable<T>> it, dynamic zipFunction(T a, T b, T c)) → dynamic: Combine elements of three iterables into pairs and perform a function between them.
zip4<T>(Iterable<Iterable<T>> it, dynamic zipFunction(T a, T b, T c, T d)) → dynamic: Combine elements of four iterables into pairs and perform a function between them.
zipList<T>(Iterable<Iterable<T>> it) → List<List<T>>: Combine list elements into pairs

helper/helper library

Constants

Functions

heart package

helper library