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Dcevm VS mypy

Compare Dcevm VS mypy and see what are their differences

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Dcevm logo Dcevm

The purpose of the project is to maintain enhanced class redefinition functionality for OpenJDK HotSpot 7/8/9/10/11 and Oracle JVM.

mypy logo mypy

Mypy is an experimental optional static type checker for Python that aims to combine the benefits of dynamic (or "duck") typing and static typing.
  • Dcevm Landing page
    Landing page //
    2020-09-08
  • mypy Landing page
    Landing page //
    2020-01-06

Dcevm features and specs

No features have been listed yet.

mypy features and specs

  • Static Type Checking
    Mypy provides static type checking for Python code, allowing developers to detect type errors during development rather than at runtime.
  • Improved Code Quality
    By catching type errors early, Mypy helps ensure code correctness and maintainability, leading to improved overall code quality.
  • Better Documentation
    Mypy's type annotations serve as a form of documentation, making it easier for developers to understand the expected types of function parameters and return values.
  • Easy Integration
    Mypy can be easily integrated with existing Python projects incrementally, allowing teams to adopt type checking gradually.
  • Support for Python 3 Typing
    Mypy supports Python 3's type hinting syntax, making it a natural fit for modern Python codebases.

Possible disadvantages of mypy

  • Partial Support for Python Features
    Mypy may not fully support some dynamic features of Python, leading to limitations in its type-checking capabilities for certain code patterns.
  • Initial Learning Curve
    Developers unfamiliar with type annotations or static type checking may face a learning curve when first adopting Mypy in their projects.
  • Additional Code Overhead
    Mypy requires additional type annotations in the code, which can add to the overall codebase size and require extra effort to maintain.
  • Performance Overhead
    While Mypy itself does not affect runtime performance, running type checks during development can introduce additional processing time.
  • Incompatibility with Some Libraries
    Certain third-party libraries may not provide type stubs or may not be fully compatible with Mypy's type checking, requiring developers to create custom stubs.

Dcevm videos

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mypy videos

Convincing an entire engineering org to use and like mypy

More videos:

  • Review - Start Being Static with MyPy - Mark Koh - PyGotham 2017

Category Popularity

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User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Dcevm and mypy

Dcevm Reviews

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mypy Reviews

7 best recommended IntelliJ IDEA Python plugins - Programmer Sought
This plugin from the JetBrains plugin market integrates MyPy into your Intellij. If you need some guidance, the MyPy website provides a lot of documentation to help you install and use MyPy to improve your Python code.

Social recommendations and mentions

Based on our record, mypy seems to be a lot more popular than Dcevm. While we know about 50 links to mypy, we've tracked only 4 mentions of Dcevm. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Dcevm mentions (4)

  • Java in the Small
    Interesting, I've never heard of Espresso, I've always just used Jetbrains Runtime[1] instead which is the successor of DCEVM[2] in a way. As for plugins I used HotswapAgent[3] at times however I found it to be rather clunky, does Espresso improve on this aspect? 1: https://github.com/JetBrains/JetBrainsRuntime 3: https://hotswapagent.org/. - Source: Hacker News / 5 months ago
  • Debug Unresponsive Apps
    Tip: Keep in mind that HotSwap has its limitations. If you are interested in extended HotSwap capabilities, it might be a good idea to take a look at advanced tools like DCEVM or JRebel. - Source: dev.to / about 1 year ago
  • Minecraft Real-Time Development Platform -- Think Unreal Engine 4 or Unity, but for Minecraft.
    For hot reload... Again Minecraft has no set in stone system for doing this. While you can use a custom JVM to do it... http://dcevm.github.io/ or https://www.jrebel.com/products/jrebel ... This is going to be really buggy. Its significantly better to simply serialize your object, destroy it, and then make it again using the new class definition with the data you stored. Put simply, you should make your game from... Source: over 3 years ago
  • Running You Dev Env in Docker Without Restarting the Container?
    Otherwise use a hotswap-able JVM like http://dcevm.github.io/ so you can reaload your classes while the app is running in your container. Source: about 4 years ago

mypy mentions (50)

  • Java in the Small
    I've always admired many of Java's features, but let's not act like the reason for using Java for scripting is the pitfalls of Python. It's just because of an underlying preference for Java. 1. https://mypy-lang.org/. - Source: Hacker News / 5 months ago
  • Moving your bugs forward in time
    ‍I’m not here to tell people which languages they should love. But if you do find yourself writing production code in a dynamically typed language like Python, Ruby, or JavaScript, I would give serious consideration to opting into the type-checking tools that have become available in those ecosystems. In Python, consider requiring type hints and adding mypy checks to your CI to move your type safety bugs forward... - Source: dev.to / about 1 year ago
  • Embracing Modern Python for Web Development
    Mypy is "an optional static type checker for Python that aims to combine the benefits of dynamic (or "duck") typing and static typing". As Python is dynamically typed, Mypy adds an extra layer of safety by checking types at compile time (based on type annotations conforming to PEP 484), catching potential errors before runtime. - Source: dev.to / over 1 year ago
  • A Tale of Two Kitchens - Hypermodernizing Your Python Code Base
    Mypy stands as an essential static type-checking tool. Its primary function is to verify the correctness of types in your codebase. However, manually annotating types in legacy code can be laborious and time-consuming. - Source: dev.to / over 1 year ago
  • Lua: The Little Language That Could
    Lua is a great language for embedding, but one thing I wish it had was some form of optional type annotations that could be checked by a linter. Something like mypy for Lua would be super-useful. Source: almost 2 years ago
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What are some alternatives?

When comparing Dcevm and mypy, you can also consider the following products

XRebel - XRebel is a lightweight Java profiler that helps developers find and fix common problems in their application as they code.

PyLint - Pylint is a Python source code analyzer which looks for programming errors.

JRebel - Reload code changes instantly w/ JRebel. Stop redeploying in Java development & Save 10 minutes of every hour coding. Get JRebel Today - Free Trial!

flake8 - A wrapper around Python tools to check the style and quality of Python code.

HotSwap - Download HotSwap! - Removes devices from Device Manager without putting the data stored on the connected drives in danger, also providing a console-based mode

SonarQube - SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.