What is Type Checking?
Let's find out Type Checking meaning, definition in crypto, what is Type Checking, and all other detailed facts.
Type Checking is a process that establishes whether a program operation is compliant with the type declaration rules of the programming language.
In most cases, type checking is done by a compiler. This compiler is able to check and verify whether all operations hold the pre-defined number of arguments and data types.
Type checking is categorized into two systems: static and dynamic.
Static Type Checking
Static type checking offers reliability, security, and saving time since it removes the need to run your program when type checking.
The main advantage of this category includes preliminary error detection. This means that you don’t have to run your program in order to detect said errors. Everything is done beforehand.
A compiler starts the type checking process which is done at compile time.
Let’s take the C programming language as an example. In this case, you can run your program without declaring the variables within it. However, since you don’t have to declare the variables, the compiler won’t be able to complete its process and will display an error message. In turn, your program will remain static.
Dynamic Type Checking
Dynamic type checking only starts at either runtime or execution time. Therefore, it’s different from the static type checking which occurs at compile time.
You can write programs without having to worry about having any crucial knowledge about types.
Let's have a look at one of the forms of type checking process:
- Each variable, parameter, and function is assigned a data type;
- Data types determine what kind of operations can be executed;
- Type checking whether the operations are correct.
Unlike the static type checking, where type checking is always performed by the compiler, the dynamic type checking process varies by the programming language. For instance, PHP programming language doesn’t require a compiler while C programming language does.
Additionally, there are such programming languages where programmers are given the ability to take values at run time and associate them with arbitrary properties. Or, if the programming language allows, programmers can define new types to be used within their program algorithms.
Although TypeScript is considerably younger than JavaScript, only entering its second decade of existence, it has gathered a sizable online community. Those interested in learning TypeScript can find online tutorials and guides that build the foundation of the language.<\/p>","definition":"a programming language that builds on JavaScript.","status":"published","meta_title":"What is TypeScript Programming Language? 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The first factor is the traditionally used password while the second factor is a code sent through a secure platform or even biometric authentication.<\/p>\n<p>You can see this feature being implemented in many various platforms, including <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-exchange/">cryptocurrency exchanges<\/strong><\/a>. Users within those platforms must set a password that complies with the secure password requirements, however, if they want an enhanced layer of security and protection added to their account or <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-wallet/">wallet, they can easily set up two-factor authentication.<\/p>\n<p>Two-factor authentication works like this - when the user wants to connect to his account they enter the password into the login screen which triggers the requirement for a second piece of information. <strong>This secondary information could be a security code, a link sent to your email address, a call to action button on an app, and many other 2FA options<\/strong>. It’s important to note that it’s not another password.<\/p>\n<p>As mentioned above, it’s possible to employ biometrics as a second piece of information for authentication. There are three most widely used options:<\/p>\n<ol>\n<li><strong>Fingerprint scan<\/strong>. Apple popularized this method with their iPhone 5s which was the first smartphone that scanned fingerprints in order to grant access. It doesn’t remove the need for passwords, but it speeds up the process. Fingerprint scans are still integrated within a lot of smartphones;<\/li>\n<li><strong>Face recognition<\/strong>. Another method that’s widely used on smartphones. Their 3D cameras are able to effectively scan the face thus only granting access to the owner;<\/li>\n<li><strong>Retina scan<\/strong>. This complex authentication method is generally utilized within systems that require an extremely high level of security such as the military or government. It involves scanning the blood vessels of the person's retina since each person has a unique retinal blood vessel pattern. It's considered to be one of the most reliable biometric authentication methods.<\/li>\n<\/ol>","definition":"grants access only to those users who pass two different authentication forms.","status":"published","meta_title":"What is Two-Factor Authentication (2FA)? Definition & Meaning | Crypto Wiki","meta_description":"Two-Factor Authentication (2FA) meaning: Two-Factor Authentication (2FA) - grants access only to those users who pass two different authentication forms.","meta_keywords":null}" :model="{"id":928,"wikipedia_url":"https:\/\/en.wikipedia.org\/wiki\/Type_system","level":"medium","author_id":1,"created_at":"2023-06-19T06:59:01.000000Z","updated_at":"2023-12-14T17:18:09.000000Z","slug":"what-is-type-checking","title":"What is Type Checking?","section":"T","keyword":"Type Checking","content":"<p><strong>Type Checking<\/strong> is a process that <strong>establishes whether a program operation is compliant with the type declaration rules of the programming language<\/strong>. <\/p>\n<p>In most cases, type checking is done by a compiler. This compiler is able to check and verify whether all operations hold the pre-defined number of arguments and data types.<\/p>\n<p>Type checking is categorized into two systems: static and dynamic.<\/p>\n<p><strong>Static Type Checking<\/strong><\/p>\n<p>Static type checking offers reliability, security, and saving time since it removes the need to run your program when type checking.<\/p>\n<p>The main advantage of this category includes preliminary error detection. This means that you don’t have to run your program in order to detect said errors. Everything is done beforehand.<\/p>\n<p><strong>A compiler starts the type checking process which is done at compile time<\/strong>. <\/p>\n<p>Let’s take the C programming language as an example. In this case, you can run your program without declaring the variables within it. However, since you don’t have to declare the variables, the compiler won’t be able to complete its process and will display an error message. In turn, your program will remain static.<\/p>\n<p><strong>Dynamic Type Checking<\/strong><\/p>\n<p>Dynamic type checking only <strong>starts at either runtime or execution time<\/strong>. Therefore, it’s different from the static type checking which occurs at compile time. <\/p>\n<p>You can write programs without having to worry about having any crucial knowledge about types.<\/p>\n<p>Let's have a look at <strong>one of the forms of type checking process:<\/strong><\/p>\n<ul>\n<li>Each variable, parameter, and function is assigned a data type;<\/li>\n<li>Data types determine what kind of operations can be executed;<\/li>\n<li>Type checking whether the operations are correct.<\/li>\n<\/ul>\n<p>Unlike the static type checking, where type checking is always performed by the compiler, the <strong>dynamic type checking process varies by the programming language<\/strong>. For instance, PHP programming language doesn’t require a compiler while C programming language does.<\/p>\n<p>Additionally, there are such programming languages where programmers are given the ability to take values at run time and associate them with arbitrary properties. Or, if the programming language allows, programmers can define new types to be used within their program algorithms. <\/p>","definition":"is a verification process in programming languages.","status":"published","meta_title":"What is Type Checking? 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He’s a passionate analyst who is concerned with data-driven and fact-based content, as well as that which speaks to both Web3 natives and industry newcomers.<\/p>\n<p>Aaron is the go-to person for everything and anything related to digital currencies. With a huge passion for blockchain & Web3 education, Aaron strives to transform the space as we know it, and make it more approachable to complete beginners.<\/p>\n<p>Aaron has been quoted by multiple established outlets, and is a published author himself. Even during his free time, he enjoys researching the market trends, and looking for the next supernova.<\/p>","user":{"id":1,"first_name":"Aaron","last_name":"S.","email":"aaron@bitdegree.org","email_sanitized":"aaron@bitdegree.org","email_verified_at":"2023-12-01T09:40:20.000000Z","must_verify_email":false,"is_registered_with_wallet":false,"status":"active","country":"LT","last_connected_ip":"88.119.132.125","image_id":2641,"referral_token":"05TMu2NysXOCn525","referred_by":null,"created_at":"2023-05-03T14:30:55.000000Z","updated_at":"2024-01-09T15:22:21.000000Z","full_name":"Aaron S."}}}" :chapter-list="[{"id":1,"title":"Blockchain","slug":"blockchain","updated":null,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-blockchain.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/blockchain-101.jpg","rating":100,"sections":[{"chapter_id":1,"order":1,"slug":"what-is-blockchain","title":"What is the Blockchain?","status":"published","modified_content":null},{"chapter_id":1,"order":2,"slug":"decentralized-blockchain","title":"Anonymous & Decentralized Blockchains: The Cornerstone of Crypto","status":"published","modified_content":null},{"chapter_id":1,"order":3,"slug":"blockchain-transaction","title":"What is a Blockchain Transaction in Crypto?","status":"published","modified_content":null},{"chapter_id":1,"order":4,"slug":"crypto-fees","title":"The Different Types of Crypto Fees Explained","status":"published","modified_content":null},{"chapter_id":1,"order":5,"slug":"what-is-bridging-in-crypto","title":"The Key Notion Behind the Concept of Bridging in Crypto","status":"published","modified_content":null},{"chapter_id":1,"order":6,"slug":"types-of-blockchains","title":"Different Types of Blockchains: What to Look Out For?","status":"published","modified_content":null}]},{"id":2,"title":"Cryptocurrencies","slug":"cryptocurrencies","updated":null,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-cryptocurrencies.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/cryptocurrencies-101.jpg","rating":100,"sections":[{"chapter_id":2,"order":1,"slug":"what-is-a-cryptocurrency","title":"What is a Cryptocurrency?","status":"published","modified_content":null},{"chapter_id":2,"order":2,"slug":"how-does-cryptocurrency-work","title":"How Does Cryptocurrency Work?","status":"published","modified_content":null},{"chapter_id":2,"order":3,"slug":"is-cryptocurrency-a-good-investment","title":"Is Cryptocurrency a Good Investment? 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