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What the functions do. The functions are simple data validation and data type checking functions. The data validation functions determine whether it is possible to convert or coerce the data value given as an argument to the function to the type implied by the function name, and return a Boolean value recording whether it was possible or not.
In object-oriented programming languages such as Java, reflection allows inspection of classes, interfaces, fields and methods at runtime without knowing the names of the interfaces, fields, methods at compile time. It also allows instantiation of new objects and invocation of methods. Reflection is often used as part of software testing, such ...
Guard (computer science) In computer programming, a guard is a boolean expression that must evaluate to true if the execution of the program is to continue in the branch in question. Regardless of which programming language is used, a guard clause, guard code, or guard statement, is a check of integrity preconditions used to avoid errors during ...
Python 2.7+ also supports set comprehensions and dictionary comprehensions. First-class functions. In Python, functions are first-class objects that can be created and passed around dynamically. Python's limited support for anonymous functions is the lambda construct. An example is the anonymous function which squares its input, called with the ...
TL;DR: Through Feb. 20, the Complete Excel, VBA, and Data Science Certification Training Bundle is on sale for only $24.99 — that breaks down to less than two bucks per course.As a field, data ...
Semipredicate problem. In computer programming, a semipredicate problem occurs when a subroutine intended to return a useful value can fail, but the signalling of failure uses an otherwise valid return value. [1] The problem is that the caller of the subroutine cannot tell what the result means in this case.
Visual Basic for Applications. Visual Basic for Applications ( VBA) is an implementation of Microsoft 's event-driven programming language Visual Basic 6.0 built into most desktop Microsoft Office applications. Although based on pre-.NET Visual Basic, which is no longer supported or updated by Microsoft, the VBA implementation in Office ...
Power restoration efforts in Maine and New Hampshire entered another day on Saturday with more than 100,000 homes and businesses still in the dark several days after a storm brought powerful winds ...