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The statements within the try block are executed, and if any of them throws an exception, execution of the block is discontinued and the exception is handled by the catch block. There may be multiple catch blocks, in which case the first block with an exception variable whose type matches the type of the thrown exception is executed.
Try {Import-Module ActiveDirectory} Catch [Exception1] {# Statements that execute in the event of an exception, matching the exception} Catch [Exception2],[Exception3etc] {# Statements that execute in the event of an exception, matching any of the exceptions} Catch {# Statements that execute in the event of an exception, not handled more ...
Another feature is a semi-asynchronous mechanism that raises an asynchronous exception only during certain operations of the program. For example, Java's Thread. interrupt only affects the thread when the thread calls an operation that throws InterruptedException. [53]
The term "exception" may be misleading because its connotation of "anomaly" indicates that raising an exception is abnormal or unusual, [14] when in fact raising the exception may be a normal and usual situation in the program. [13] For example, suppose a lookup function for an associative array throws an exception if the key has no value ...
Sometimes within the body of a loop there is a desire to skip the remainder of the loop body and continue with the next iteration of the loop. Some languages provide a statement such as continue (most languages), skip, [8] cycle (Fortran), or next (Perl and Ruby), which will do this. The effect is to prematurely terminate the innermost loop ...
C# (/ ˌ s iː ˈ ʃ ɑːr p / see SHARP) [b] is a general-purpose high-level programming language supporting multiple paradigms.C# encompasses static typing, [16]: 4 strong typing, lexically scoped, imperative, declarative, functional, generic, [16]: 22 object-oriented (class-based), and component-oriented programming disciplines.
In C, break and continue allow one to terminate a loop or continue to the next iteration, without requiring an extra while or if statement. In some languages multi-level breaks are also possible. For handling exceptional situations, specialized exception handling constructs were added, such as try/catch/finally in Java.
In computer science, the event loop (also known as message dispatcher, message loop, message pump, or run loop) is a programming construct or design pattern that waits for and dispatches events or messages in a program. The event loop works by making a request to some internal or external "event provider" (that generally blocks the request ...