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Miscellaneous
Programming functions
Reading time: 2minThis section introduces the foundational programming constructs, which are crucial for building sophisticated and adaptive logicals within LearningLemur. These functions allow you to control the flow of your code, generate random values, work with collections of data like sets and lists, and perform logical checks.
The functionalities covered include:
- Commands like
if,else, andelse_ifallow you to execute specific blocks of code based on whether certain conditions are met. - The
forstatement enables repetitive execution of code for a defined number of iterations or over a range, andwhileexecutes code as long as a condition holds true. - The
randomcommand is vital for creating dynamic content by generating unpredictable numbers or selecting random elements. - Functions such as
erase(to remove elements),maxandmin(to find extreme values),set(to create and manage unique collections),sort(to order data), andsplit(to divide strings) help you prepare and process data within your logicals. - Commands like
belongs?allow you to verify if an element is part of a set.
Functions
belongs?
Given an element and a list or a vector, returns true if the element belongs to the list or vector, and false otherwise.
belongs?(Element, List | Vector)constant_list
Given an integer n and an element x, constructs a list with the element x repeated n times.
constant_list(Integer, Element)else
Usual programming command. It should be preceded by an if. Executes the next block of code if the condition in the if statement was not hold.
else_if
Usual programming command. It should be preceded by an if. Executes the next block of code if the condition in the if statement was not hold and the current one is true.
for
Usual programming command. Write easily a loop that needs to be run a specific number of times.
is?
Given an object and a domain D, returns true if the object is of type D, and false otherwise.
is?(Object, Domain)length
Given an object, returns its length.
length(List | Vector | Range | Rule)list
Given an object, transforms it into a list.
list(Vector | Range | Permutation | Polygonal | Point | Frequency_sample_of)maximum
Given a set of real numbers x1,...,xn, returns the maximum max{x1,...,xn}.
Given a list or vector, returns the maximum of its elements.
max(Real, ..., Real)
max(List | Vector | Range)minimum
Given a set of real numbers x1,...,xn, returns the minimum min{x1,...,xn}.
Given a list or vector, returns the minimum of its elements.
min(Real, ..., Real)
min(List | Vector | Range)null?
Given an object, returns true if it is null, and false otherwise.
null?(Object)prepend
Given a list or a vector and an element, adds the element at the beginning of the list or vector, increasing its size.
prepend(List | Vector, Element)random
Given an integer n, returns a random integer number in the interval [0,n) (if n is positive) or (n,0] (if n is negative).
Given a real x, returns a random real number in the interval [0,x) (if x is positive) or (x,0] (if x is negative).
Given two integers numbers a and b, returns a random integer in the interval [a,b].
Given two real numbers a and b, returns a random real number in the interval [a,b].
random(Integer)
random(Real)
random(Integer, Integer)
random(Real, Real)repeat
Usual programming command. Executes the next block of code until the condition holds.
sort
Sorts a list, range or vector in ascending order.
subset?
Given two list or vectors A and B, returns true if the A is a subset of B, and false otherwise.
subset?(List | Vector, List | Vector)
where
Specifies a condition that needs to be hold. Works together with the function in.
while
Usual programming command. Executes the next block of code until the condition does not satisfy.
with
Specifies the range of an iterator.