Package-level declarations

Shorter name for InstantTimeProvider.

Implementation of TimeProvider providing access to Instant.now method.

Implementation of TimeProvider providing access to LocalDateTime.now method.

This name makes a bit more sense as we're constraining to temporal.

Interface providing access to current time via now method.

Calls the specified function block with this value as its receiver if and only if the shouldApply parameter is true. Returns this value.

Calls the specified function block with this value as its receiver if and only if the shouldApplyBlock lambda returns true. Returns this value.

Applies given block if the value is not null, supplies non-nullable value to the block as an input.

Creates a single element list from this.

Returns a Map containing key-value pairs provided by elements of the given collection.

Returns a Map containing key-value pairs provided by transform function applied to elements of the given collection.

Returns a Map containing the elements from the given collection indexed by the key returned from keySelector function applied to each element.

Returns a Map containing the values provided by valueTransform and indexed by keySelector functions applied to elements of the given collection.

Populates and returns the destination mutable map with key-value pairs, where key is provided by the keySelector function applied to each element of the given collection and value is the element itself.

Populates and returns the destination mutable map with key-value pairs, where key is provided by the keySelector function and value is provided by the valueTransform function applied to elements of the given collection.

Populates and returns the destination mutable map with key-value pairs provided by elements of the given collection.

Populates and returns the destination mutable map with key-value pairs provided by transform function applied to each element of the given collection.

Returns a Map where keys are elements from the given collection and values are produced by the valueSelector function applied to each element.

Populates and returns the destination mutable map with key-value pairs for each element of the given collection, where key is the element itself and value is provided by the valueSelector function applied to that key.

Builds a new Array by populating a MutableList using the given builderAction and returning an Array with the same elements.

List cartesian production.

Creates cartesian product between all the elements from this and other iterable. E.g. when this contains 1,2,3 and other contains 'a', 'b', the result will be {Pair(1,'a'), Pair(1,'b'), Pair(2,'a'), Pair(2,'b'), Pair(3,'a'), Pair(3,'b')}.

Computes MD5 from given byte array, returns base64 encoded data.

Serializes given object to string.

Serializes given object to byte array.

Serializes given object to string.

Returns the most frequently occurring value of the given function or null if there are no elements.

Computes duration in milliseconds between two Instant instances.

Computes duration in milliseconds between two Instant instances.

Compares two strings ignoring case.

Returns an array containing only elements matching the given predicate.

Returns an array containing only elements matching the given predicate.

Returns an array containing all elements that are instances of specified type parameter R.

Returns an array containing all elements not matching the given predicate.

Returns an array containing all elements that are not null.

Returns a list containing only the non-null results of applying the given transform function to each element in the original collection.

Returns a single list of all not null elements yielded from results of transform function being invoked on each element of original collection.

Appends all elements yielded from results of transform function being invoked on each element of original collection, to the given destination.

Applies the given transform function to each element of the original collection and returns results as Set.

For each key, merges all the list into one common list.

Returns three lists with separated values from list of triples.

Validates the relationship between every element of Iterable.

Performs the given action on each element that is not null.

Returns list of days from this date to to date (both inclusive).

Returns stream of days from this date to to date (both inclusive).

Returns number of days between this date and to date (exclusive). This means that this method returns 0 when this and to are equal.

Returns number of days in interval between this date and to date (both inclusive). This means that this method returns 1 when this and to are equal.

Retrieves environment variable from the system.

Retrieves environment variable from the system, if the value is not found, recoverBlock is executed.

Returns stream of decreasing days from this date to to date (both inclusive). This means that this date should be later than to date to obtain non-empty stream.

Randomly sorts the items with respect to the current weight distribution. normalizer is used to normalize the random value obtained from rand to control how important the original weights are. With higher normalizer the importance of the random factor decreases.

Function that will return a random element from the iterable.

Collects all the values from the bottom level into set.

Collects all the values from the bottom level into the given collection M.

Collects all the values from the bottom level into set.

Collects all the values from the bottom level into the given collection M.

Returns week of year for this.

Randomly selects item with respect to the current weight distribution.

Creates SHA256 hash of the given file.

Creates SHA256 hash of the given byte array.

Creates SHA256 hash of the given text.

Creates intersection of the given iterables.

Returns true when there is at least one element x for which x in this and x in other returns true.

Checks if string is valid email address.

Returns true if the iterable is empty. If this is a Collection, uses isEmpty, otherwise creates iterator and verifies whether it has next value.

See documentation for isUrl.

Check whether a given string is a valid URL.

See documentation for isUrl.

See documentation for isUuid.

Check whether a given string is a valid UUID.

See documentation for isUuid.

Formats a collection of TItems to a readable string like "3 colors: red, yellow, green".

Standard ObjectMapper configured in a way the platform operates.

ObjectMapper with registered Kotlin plugin and given settings.

Joins two maps together using the given join function.

Joins two maps together using the given join function into the given destination.

A function used to get the instance of class. This method allows to get class instances even for generic classes, which cannot be obtained using :: notation.

Lazy cartesian production.

Applies block on left part of pair.

Applies leftBlock on left part and rightBlock on right part.

Applies block on right part of pair.

Returns an array containing the results of applying the given transform function to each element in the original array.

Returns an array containing the results of applying the given transform function to each element and its index in the original array.

Applies block on left part of pair in List.

Applies leftBlock on left part and rightBlock on right part.

Applies block on right part of pair in List.

Applies the given transform function to each element of the original collection and returns results as Set.

Returns the last item in this sorted set.

Returns the largest value of the given function or null if there are no elements.

Returns base64 string MD5 of given byte array.

For each key, merges all the values into one common list.

Merges two maps together using the given reduce function. By default, the reduce function keeps the value from this map.

Merges two maps together using the given reduce function into the given destination. By default, the reduce function keeps the value from this map.

Returns the first item in this sorted set.

Returns an array containing all elements of the original collection without the first occurrence of the given element.

Returns an array containing all elements of the original collection except the elements contained in the given elements array.

Returns the smallest value of the given function or null if there are no elements.

Returns value or null from Optional. Useful when using kotlin-like T? and Optional.

Tries to create instance of T from provided json, null is returned when it is not possible to parse it. If logParserException set to true and exception is raised during JSON parsing, it is logged.

Pretty print a json.

Prints @param promptText, reads input from console and applies @param transform to it. If @param transform throws an exception on user input, @param exceptionHandler will be invoked, and prompt will be repeated.

When both items in pair are not null, returns non-nullable pair, otherwise returns null.

Loads properties file from the resources. Returns null if the properties were not loaded.

Function that will return a random element from the iterable.

Creates reduction of the given Iterable. This function can be used for example for cumulative sums.

Shortens the string to maxLength; in such case, appends the ellipsis (typically "…" ).

Returns all values that are in this and not in other with custom selector.

Returns this LocalDate with week of the year set to week and day of the week set to DayOfWeek.MONDAY. I.e. when this date is 23-08-2019 and week is 2, the returned date is 07-01-2019.

Returns base64 encoded SHA256 of given byte array.

Returns single element, or null if the collection is empty. Throws IllegalArgumentException when multiple elements are matching predicate.

Returns the single element matching the given predicate, or null if element was not found.

Takes Iterable with pairs and returns a pair of collections filled with values in each part of pair.

Converts stacktrace to the string. Uses Throwable.printStackTrace and returns it as string.

Returns true if the string starts with a latin letter a-z or A-Z.

Sum collection by float as this is missing in the stdlib even after version 1.4.0.

Sums all Lists of integers into single one by indexes (i.e. all the numbers with the same index are always summed together). If the lists have different lengths, the final list has length corresponding to the shortest list in this iterable.

Returns the sum of all values produced by selector function applied to each element in the collection.

Returns the sum of all values produced by selector function applied to each element in the sequence.

Sums all Lists of integers into single one by indexes (i.e. all the numbers with the same index are always summed together). If the lists have different lengths, the final list has length corresponding to the shortest list in this iterable.

Swaps dimensions in two-dimensional map. The returned map has keys from the second dimension as primary keys and primary keys are used in the second dimension.

Works similarly as swapKeys but the final map has three levels. transform specifies how the keys should be swapped (or modified) in the newly created map.

Swaps dimensions in two-dimensional map. The returned map has keys from the second dimension as primary keys and primary keys are stored in the second dimension. topDestination specifies which map should be used to store the new primary keys and bottomDestination is used to store the new secondary keys.

Works similarly as swapKeys but the final map has three levels. transform specifies how the keys should be swapped (or modified) in the newly created map. topDestination specifies which map should be used to store the new primary keys, middleDestination is used to store the new secondary keys and bottomDestination is used to store the new tertiary keys.

Returns base64 string representation of given byte array.

Returns base64 representation of this string.

Convert Date to LocalDate. zoneId parameter sets the zone of the LocalDate instance.

Creates a string like "className(description)", for example "Double(42.0)" Useful e.g. for implementing .toString() override.

Returns a NavigableSet of all elements.

Extracts the essential information from an object (most usually a string), whose toString() call result has a similar format as the output of function toLongString . If the format is not similar, it simply returns this.toString() .

Works similarly as toTwoLevelMap but the final map has three levels.

Works similarly as toTwoLevelMap but the final map has three levels. topDestination specifies which map should be used to store the new primary keys, middleDestination is used to store the new secondary keys and bottomDestination is used to store the new tertiary keys.

Transforms list of pairs, where the first element consists of pairs into two-dimensional map where the first elements from the inner pair are used as primary keys and second elements as secondary keys.

Transforms map of pairs as a keys into two-dimensional map where the first elements in the pair are used as primary keys and second elements as secondary keys.

Transforms list of pairs, where the first element consists of pairs into two-dimensional map where the first elements from the inner pair are used as primary keys and second elements as secondary keys. topDestination specifies which map should be used to store the new primary keys and bottomDestination is used to store the new secondary keys.

Transforms map of pairs as a keys into two-dimensional map where the first elements in the pair are used as primary keys and second elements as secondary keys. topDestination specifies which map should be used to store the new primary keys and bottomDestination is used to store the new secondary keys.