Rust’s commitment to reliability extends to error handling. Errors are a fact of life in software, so Rust has a number of features for handling situations in which something goes wrong. In many cases, Rust requires you to acknowledge the possibility of an error and take some action before your code will compile. This requirement makes your program more robust by ensuring that you’ll discover errors and handle them appropriately before you’ve deployed your code to production!
Rust groups errors into two major categories: recoverable and unrecoverable errors. For a recoverable error, such as a file not found error, it’s reasonable to report the problem to the user and retry the operation. Unrecoverable errors are always symptoms of bugs, like trying to access a location beyond the end of an array.
Most languages don’t distinguish between these two kinds of errors and handle both in the same way, using mechanisms such as exceptions. Rust doesn’t have exceptions. Instead, it has the type
Result<T, E> for recoverable errors and the
panic! macro that stops execution when the program encounters an unrecoverable error. This chapter covers calling
panic! first and then talks about returning
Result<T, E> values. Additionally, we’ll explore considerations when deciding whether to try to recover from an error or to stop execution.
The title is a bit confusing to understand the context of the content. In this blog, I am going to run around and see the different aspects of programming language rust. And talk about the concepts that it introduces that are useful for various aspects of programming.
Simply putting it is a statically as well as strongly typed programming language.
Let me explain:
_statically typed _indicates that all the datatypes that are expressed in the code are known at compile time and memory allocation is done properly.
Then what is 👆 that? Let’s just say rust knows what you want to say.
But this doesn’t mean you could declare variables for a complex data type and expect rust to understand. Here comes the next point I mentioned above.
_strongly typed _indicates that the types are designed to make it harder to write syntatically incorrect code.
If you were to do even a little mistake with the syntax or definition of variables then the errors are caught at compile time. Not just the syntax errors but there are various tests build in the compiler to check for unused variables, dead code(Code that will never run), infinite loops as well as the lifetime of variables.
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SQL stands for Structured Query Language. SQL is a scripting language expected to store, control, and inquiry information put away in social databases. The main manifestation of SQL showed up in 1974, when a gathering in IBM built up the principal model of a social database. The primary business social database was discharged by Relational Software later turning out to be Oracle.
Models for SQL exist. In any case, the SQL that can be utilized on every last one of the major RDBMS today is in various flavors. This is because of two reasons:
1. The SQL order standard is genuinely intricate, and it isn’t handy to actualize the whole standard.
2. Every database seller needs an approach to separate its item from others.
Right now, contrasts are noted where fitting.
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This is the very first blog of the series that pertains to create a basic Operating System using Rust Programming Language.
The aim of this series is to learn and understand the basics of Operating System. Through this series, you will get some ideas about the internal components of Operating System and how they interact with each other.
In this article, we will create a freestanding binary (an executable) that has the capability to run on bare metal. To create that executable we need to follow certain steps:
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The ultimate Rust lang tutorial. Follow along as we go through the Rust lang book chapter by chapter.
📝 Get notified when the Rust Cheatsheet comes out: https://letsgetrusty.com/cheatsheet
The Rust book: https://doc.rust-lang.org/stable/book/
0:25 Using panic!
2:23 The Result Enum
8:27 Error Propagation
9:37 The ? Operator
12:43 panic! vs Result
14:17 Custom Types for Validation
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