A void is a space that does not have any contents. These spaces can be found on ships or in the observable universe.
A void can be used as a data type in computer programming, and it can also refer to a pointer declaration that points to an empty variable. The word can also be used to describe an invalid warranty.
Meaning
A void is a space or gap that has no content or occupants. It is sometimes referred to as a hole, blank, gap, vacuum or lacuna. It is usually empty and has no value.
The word void is derived from the Old French word vuit, which means empty. It was used in the 15th century to mean “emptiness of substance” or a “gap between things.”
In solid states, voids are the spaces between the constituent particles. These can be 1D, 2D and 3D in structure. Voids are most often seen in hexagonal close packing structures but can be found in other shapes as well.
They are also found in liquids, such as oil and water. In these environments, voids are formed by the buildup of vapor cavities. The pressure of these cavities can increase, and they can eventually implode and produce shock waves when they hit a metal particle or a surface of the liquid.
These voids can cause corrosion, wear and other problems in engineering. This is especially true for vapor cavities that form near metal particles and can lead to cyclic stress in metal surfaces due to repeated implosions.
This type of void can also occur in pumps and bends in liquids that are subjected to rapid changes in pressure. These changes can cause a void to become unstable and oscillate in shape.
If you want to use void in your code, you can declare it as a data type and as the return type or input parameter of a function or method. You can also use void to declare a generic pointer declaration that doesn’t have a specific type specified.
The word void is also used to describe something that has no legal force or effect, such as a contract that was not valid when it was first signed. These agreements are considered void by law, and are not legally binding or enforceable.
In the astronomical world, scientists have discovered that there is a large void in our universe, where there are fewer galaxies than usual. This void is located near the center of our Milky Way galaxy. This void is estimated to be about 1 billion light-years across.
Origin
The word void originated in the late 13th century, as the Middle English adjective voide. It comes from the Old French viude (’empty, empty space, gap, vacuum’) and the Latin vocivos (‘unoccupied, vacant’).
A void is a space or gap in a liquid, and is formed as the result of pressure changes within the fluid. In some cases, voids can cause the fluid to implode and release shock waves.
Voids are found in many materials, including ice, saltwater, and air. They can also occur in other fluids, such as blood.
When a fluid becomes a void, the pressure inside it drops drastically. The resulting pressure can make the liquid break apart and implode, producing severe shock waves that can damage nearby surfaces or even cause the entire liquid to explode.
In computer programming, void can mean an object or data type that does not return any value. It can also refer to a warranty that has been terminated due to the violation of its terms.
The term void is also used in law to mean that an action or a document does not have any legal effect. It is often applied in conjunction with the phrase void ab initio, which means that it is invalid from the beginning. This is especially true in contracts, where it can be used to prevent the parties from agreeing to a contract that is illegal or harmful to one of them.
For example, a judge might declare the election of Donald Trump to be null and void because the Republican Party does not have the necessary majority of the votes in Texas. This is considered a violation of the Constitution and is not something that should be allowed in the U.S.
Another usage is to describe a situation or feeling as being “empty.” A person might say that he was “void” of friends after losing his girlfriend. He might also say that he was “empty of emotion” after his divorce. This is a very common way to express negative feelings and emotions, such as sadness, grief, or depression.
Usage
In computer programming, void is used to indicate that a function returns nothing. This can be done with a keyword or with a void value in a variable declaration.
A void value is not a data type, and therefore can be stored in memory without any kind of typecasting. This makes it easy to use generic functions, as the void pointer can point to any data type in memory, as long as the correct type is defined.
Another common usage of void is in pointer declarations. This is because void pointers are not associated with any data type, and therefore, they can be used as general purpose pointers in C programs.
The void pointer can also be used as the return type for a function. It does not actually return a value, but it is used to indicate that the function takes no parameters. This can be done with a keyword, but can be achieved more easily by using a unary operator.
Likewise, a void * pointer is a general purpose pointer that points to a data location in memory. It doesn’t tell you what type it is, and can be typecasted to any data type.
This is an important feature in a number of programming languages, including C. The void pointer can be used to implement generic functions in C, since it is capable of pointing to any data type, as long as the correct type is assigned.
Voids are also commonly seen in mechanical devices, such as pumps and propellers. Collapsing voids can cause shock waves that can damage metal parts, particularly in cases of non-inertial cavitation.
In many engineering contexts, voids can be avoided as much as possible because they can wear out or corrode movable equipment. Nevertheless, they can be useful in some situations, such as ultrasonic cleaning baths.
A void transaction is a type of credit or debit card transaction that is not processed through a customer’s account. It is canceled by the merchant or vendor before it settles through the customer’s bank account, and does not appear as a pending transaction on the customer’s statement.
Examples
Voids are spaces between atoms that are found in two-dimensional solids, and they are also known as gaps. They are created by atoms that have been tightly packed together in a close structure, and they can cause shock waves to form when the particles collide.
In computer terms, void is used to declare the type of a function or object that does not have a return value. This is useful when a function or object does not have a particular return value and it doesn’t perform any other functions, but simply stores a value for other processes to use.
Another term for void is null, which means that it does not exist. This can be very confusing, so it’s important to know the difference between void and voidable.
The first thing to remember is that void is the absence of something, while voidable means it can be removed or changed at any time. This is important to remember because it can make the difference between a contract being valid or not.
A voidable contract can be revoked by either party if the other decides that it’s no longer necessary. This can happen for many different reasons, such as when a mutual mistake has been made or when important material was missing from the agreement.
It can also happen when one of the parties is not competent at the time the contract was made. This can be the case when someone is suffering from a medical condition or is intoxicated at the time of the contract.
The most common reason for a contract to be void is when it violates the law. This can be done by one of the parties in a number of ways, such as by using fraud or coercion. The contract will then be void, and neither of the parties can enforce it. This is why it’s important to understand the laws that govern contracts before entering into one.
