Code Block

A block may refer to any of the following:

When referring to a hard drive or other storage devices, a block is a segment of a large area that can be assigned to store data.

With a text cursor, a block cursor is a cursor that indicates text will be overwritten. See our insert key definition for further information on this cursor and how text insertion can be changed.

In computer programming, a code block is a group of declarations and statements that operates as a unit, usually with its own level of lexical scope. For instance, a block of code may be used to define a function, a conditional statement, or a loop. Below is an example of a conditional statement structured as a code block.

if ($question eq "answered") {
print("Thanks Computer Hope!");
}

Tip

A programming block should not be confused with block-based programming, a type of programming.

When referring to a radio frequency or spectrum, a block is a subset range of radio frequencies in a larger band.

In general, block is a term used to describe anything that is restricted. For example, a parent may block a website from being visited so their children are not exposed to anything they shouldn't be seeing.

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