Statement

Loops in PowerShell

Master PowerShell's iteration constructs — foreach, for, while, do-while, and pipeline-based ForEach-Object — along with break and continue for controlling rep…

SELECT and Filtering

Learn how to retrieve exactly the rows and columns you need from SQL Server tables using SELECT, WHERE, and related filtering clauses.

Conditionals in D

Learn how D Programming handles branching logic with if-else, switch, the ternary operator, and compile-time static if.

Conditional Logic in COBOL

Master COBOL's IF/ELSE, nested conditions, the EVALUATE statement, and condition-names (88-levels) for expressing readable business rules.

PERFORM Statement Variations

Explore the many forms of COBOL's PERFORM statement, from simple out-of-line calls and PERFORM THRU to TIMES, UNTIL, and in-line PERFORM blocks.

STRING and INSPECT Statements

Learn COBOL's built-in text-processing verbs: STRING for concatenation, UNSTRING for splitting, and INSPECT for counting and replacing characters.

if-else Statement in C++

Understand how the C++ `if-else` statement provides a two-way branch, executing one block when the condition is true and another when false.

if Statement in C++

Learn how the C++ `if` statement evaluates a boolean condition and conditionally executes a block of code, with syntax, flow, and examples.

return Statement in C++

Understand how the return statement ends a function and optionally sends a value back to the caller, including void functions.

switch Statement in C++

Master the C++ `switch` statement — matching an expression against multiple case labels, the role of break, fall-through behavior, and default.

switch Statement in C

Understand the C switch statement — syntax, fall-through, break, and default rules — with a correct example and common exam traps.

switch Statement in Java

Master Java's switch statement for multi-way branching, covering classic case-break syntax, fall-through behavior, and modern Java 14+ switch expressions.

with Statement (Context Managers) in Python

Learn how the 'with' statement uses the context manager protocol (__enter__/__exit__) to guarantee cleanup, such as automatically closing files.

switch Statement in JavaScript

Learn how the switch statement compares a value against multiple cases using strict equality, and why break is essential to prevent fall-through.

The select Statement in Go

The select statement lets a goroutine wait on multiple channel operations at once, proceeding with whichever is ready first.

The guard Statement in Swift

The guard statement performs early-exit validation, unwrapping optionals for use in the rest of the enclosing scope.

switch Statement in Swift

Explore Swift's powerful switch statement, which requires exhaustiveness and never falls through by default.

The INSERT Statement

Learn how to add new rows to a table using single-row, multi-row, and INSERT...SELECT forms.

SELECT Statement Basics

Learn how to retrieve data from a table using the SELECT statement, the foundation of every SQL query.

The UPDATE Statement

Modify existing rows in a table using UPDATE with SET and WHERE, and understand the risks of a missing WHERE clause.