value hello = "Hello, World!";
print(hello);.webp){kind=logo}
Ask the right questions to secure the right Ceylon talent among an increasingly shrinking pool of talent.
Ceylon, now known as Sri Lanka, was a British Crown colony off the southeastern coast of India from 1815 until it gained independence in 1948. The island's rich history includes periods of Portuguese and Dutch colonial rule before its transfer to the British Empire in 1802 under the Treaty of Amiens. Renowned for its production and exportation of tea, rubber, and cinnamon during colonial times, Ceylon played a significant role in global trade networks. Its strategic location also made it a crucial naval base during World War II. This historical information is derived from sources including Encyclopedia Britannica and Cambridge University Press publications on South Asian history.
The next 20 minutes of the interview should attempt to focus more specifically on the development questions used, and the level of depth and skill the engineer possesses.
In Ceylon, a function is defined using the 'function' keyword followed by the function name, parameters in parentheses, and the function body enclosed in braces. For example: 'function myFunction() {}'
'value' is used to declare immutable variables in Ceylon, which means their value cannot be changed once assigned. 'variable' is used to declare mutable variables, which means their value can be changed.
In Ceylon, variables are declared using the 'value' keyword for immutable variables and the 'variable' keyword for mutable variables. For example: 'value myValue = 10;' or 'variable myVariable = 10;'
Ceylon has several basic data types including Integer, Float, Character, String, Boolean, and Byte.
In Ceylon, a class is defined using the 'class' keyword followed by the class name and the class body enclosed in braces. For example: 'class MyClass {}'
This is important for staying updated with the latest technologies and best practices in software development.
Being adaptable is crucial in the ever-evolving field of software development.
This is important for writing efficient, maintainable code.
Communication skills are vital for understanding project requirements and collaborating with team members.
Problem-solving skills are necessary for developers to find and fix issues in code.
This is essential as it is the primary language they will be working with.
The next 20 minutes of the interview should attempt to focus more specifically on the development questions used, and the level of depth and skill the engineer possesses.
In Ceylon, a generic class is created by defining a class with one or more type parameters. For example: 'class MyClass<Element> {}'
Higher-order functions in Ceylon are functions that can accept other functions as parameters and/or return other functions as results.
'assert' is used to ensure that a certain condition is true at a certain point in the program. 'assert is' is used to ensure that a certain value is of a certain type.
In Ceylon, exceptions are handled using 'try', 'catch', and 'finally' blocks. The 'try' block contains the code that might throw an exception, the 'catch' block contains the code to handle the exception, and the 'finally' block contains the code that is always executed, whether an exception occurred or not.
Tuples in Ceylon are a type of collection that can hold a fixed number of elements, each with its own type. They are defined using square brackets. For example: '[Integer, String] myTuple = [1, 'hello'];'
At this stage, a skilled Ceylon engineer should exhibit a deep understanding of the Ceylon language, strong problem-solving abilities and effective communication skills. Red flags could include lack of practical experience, inability to explain complex concepts clearly or difficulty in answering technical questions.
value hello = "Hello, World!";
print(hello);value numbers = {1, 2, 3, 4, 5};
value sum = numbers.reduce(0, plus);
print(sum);value numbers = {1, 2, 3, 4, 5};
value evens = numbers.filter((Integer i) => i%2==0);
print(evens);shared void run() {
for (i in 1..100) {
print("Thread running: ``process.thread``");
}
}class Point(shared Integer x, shared Integer y) {
shared Integer distanceFromOrigin() =>
(x^2 + y^2)^0.5;
}void printNumbers() {
for (i in 1..5) {
if (i%2==0) {
continue;
}
print(i);
}
}
printNumbers();The final few interview questions for a Ceylon candidate should typically focus on a combination of technical skills, personal goals, growth potential, team dynamics, and company culture.
'abstract' is a keyword in Ceylon that is used to declare a class that cannot be instantiated. 'formal' is a keyword that is used to declare a method that must be implemented by any non-abstract subclass.
The 'satisfies' keyword in Ceylon is used to specify that a class or interface conforms to a certain interface. For example: 'class MyClass satisfies MyInterface {}'
Metamodel expressions in Ceylon are used to access the model of the program at runtime. They allow you to inspect the types, functions, classes, and other elements of the program.
'shared' is a keyword in Ceylon that makes a declaration visible to other modules. 'default' is a keyword that specifies a default implementation of an interface method.
The 'dynamic' block in Ceylon is used to interact with JavaScript code. It allows the Ceylon code to call JavaScript functions and access JavaScript objects.
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