Solidity function examples

1. How do you use a function in Solidity?
2. What are pure functions in Solidity?
3. Can we call a function inside a function in Solidity?
4. What is Solidity and liquidity in globalization?
5. What are events in Solidity?
6. What is fallback function in Solidity?
7. What is indexed in Solidity?
8. What is external in Solidity?
9. What is view function Solidity?
10. What is view and pure in Solidity?
11. What is memory in Solidity?
12. What is a function modifier in Solidity?
13. What is constructor in Solidity?

How do you use a function in Solidity?

In Solidity the function is simply invoked by writing the name of the function where it has to be called. Different parameters can be passed to function while calling, multiple parameters can be passed to a function by separating with a comma.

What are pure functions in Solidity?

Pure functions ensure that they not read or modify the state. A function can be declared as pure. The following statements if present in the function are considered reading the state and compiler will throw warning in such cases.

Can we call a function inside a function in Solidity?

However, they can't be called internally by a function within the contract. For instance, calling f() does not work, but call this. ... The visibility specifier is given after the type for state variables and between parameter list and return parameter list for functions.

What is Solidity and liquidity in globalization?

By solid or solidity, Bauman refers to being immobile, unable to adapt, and limited to specific traditional values or norms. With the rise of global liquidity or globalization- people, forces, or industries all over the world have become more flexible.

What are events in Solidity?

Event is an inheritable member of a contract. An event is emitted, it stores the arguments passed in transaction logs. These logs are stored on blockchain and are accessible using address of the contract till the contract is present on the blockchain.

What is fallback function in Solidity?

The solidity fallback function is executed if none of the other functions match the function identifier or no data was provided with the function call. Only one unnamed function can be assigned to a contract and it is executed whenever the contract receives plain Ether without any data.

What is indexed in Solidity?

Solidity events are interfaces with EVM logging functionality. You can add an attribute indexed to up to three parameters. Then, they appear in the structure of topics, not the data portion of the log. Note: when parameters do not have the indexed attribute, they are ABI-encoded into the data portion of the log.

What is external in Solidity?

external − External functions are meant to be called by other contracts. They cannot be used for internal call. ... For public state variable, Solidity automatically creates a getter function. internal − Internal functions/ Variables can only be used internally or by derived contracts.

What is view function Solidity?

Advertisements. View functions ensure that they will not modify the state. A function can be declared as view. The following statements if present in the function are considered modifying the state and compiler will throw warning in such cases.

What is view and pure in Solidity?

View: This declares that no state will be changed. In other words the function is simply returning state ( sampleNumber ), but not making any changes to the data currently on the blockchain. Pure: Declares that no state variable will be changed or read.

What is memory in Solidity?

Much like RAM, Memory in Solidity is a temporary place to store data whereas Storage holds data between function calls. The Solidity Smart Contract can use any amount of memory during the execution but once the execution stops, the Memory is completely wiped off for the next execution. ... Function arguments are in memory.

What is a function modifier in Solidity?

The Solidity documentation define a modifier as follow: A function modifier is a compile-time source code roll-up. It can be used to amend the semantics of functions in a declarative way. From this definition, we can understand that a modifier aims to change the behaviour of the function to which it is attached.

What is constructor in Solidity?

Constructor is a special function declared using constructor keyword. It is an optional funtion and is used to initialize state variables of a contract. ... A constructor code is executed once when a contract is created and it is used to initialize contract state.