core_extensions | extensions to core/std library types | Object-Relational Mapping library
kandi X-RAY | core_extensions Summary
kandi X-RAY | core_extensions Summary
Extension traits for many standard/core library types/traits. and other miscelaneuous types / traits / functions / macros.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of core_extensions
core_extensions Key Features
core_extensions Examples and Code Snippets
Lines of Code : 49License : Non-SPDX (NOASSERTION)
Copyuse core_extensions::{getconst, quasiconst};
use std::fmt::{self, Debug};
quasiconst!{
pub const VTABLE: &'static Vtable = &Vtable {
size: std::mem::size_of::(),
align: std::mem::align_of::(),
drop: drop_erased: [dependencies.core_extensions]
version = "1.0"
features = ["std", "all_items"]
Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
Community Discussions
Trending Discussions on core_extensions
QUESTION
I have a monkeypatched of ActiveRecord find with some business logic, for example:
ANSWER
Answered 2018-Nov-30 at 14:58It's the first time I see such case :). I'd put it in app/core_extensions and check if live reloading works correctly with it. If not, I'd move it to lib/. (It's just a heuristic)
Edit:
Instead of extending NilClass I'd rather use regular NullObjects. It's really less surprising and easier to understand.
https://robots.thoughtbot.com/rails-refactoring-example-introduce-null-object
QUESTION
I have an existing rails project and I am using postgres database and after successful execution of bundle exec rake db:migrate command when I am going to execute the bundle exec rake db:seed command then it throws me the following error.
rake aborted! PG::DuplicateTable: ERROR: relation "schema_migrations" already exists
I have commented out the lines where the definition of the schema_migration table creation is stored such as in the development_structure.sql and test_structure.sql files. But it is still throwing me the error.
I don't know from where the schema_migration table is being created. There is no schema_migration.rb file in my project.
Pleas help me to fix this. Thanks in advance!
This is my error log.
...ANSWER
Answered 2018-Jan-12 at 07:48If it's OK to drop your data locally, try
QUESTION
I have extended the string class as follows:
...ANSWER
Answered 2017-May-28 at 12:42Does your spec have require "rails_helper"?
Have you tried restarting Spring?
QUESTION
I am trying to help improve this open source repository: https://github.com/michenriksen/birdwatcher/ . At the moment if the user puts in the wrong postgreSQL password, the repository outputs:
...ANSWER
Answered 2017-Jan-28 at 17:57The error is probably raise when the connection is configured or the first query is run. That happens in this two lines:
QUESTION
I read a blog post that recommends namespacing your monkey patches so they can be easily viewed and included.
For example:
...ANSWER
Answered 2017-Jan-06 at 01:42Although ruby offers many ways of changing the content of a class or a method dynamically, the monkey patching can lead to big problems and strange bugs. I read this post (http://www.virtuouscode.com/2008/02/23/why-monkeypatching-is-destroying-ruby/) about why it´s a bad idea to use monkey-patching.
In summary, many things that he says make sense. When you create a monkey-patching, you are assuming that it will only works at that project, and, maybe you can create collisions and unprevisible side-effects when more libraries with similar purposes are put together.
There are cases where the benefits of the monkey-patching were awesome, like ActiveSupport way of dealing with dates manipulation by monkey-patching the Fixnum class with the ago or from_now methods, or as the method to_json. However, monkey patching should be avoided.
The point is: Ruby is an object-oriented language, and you can achieve your objectives using object composition, or any other patterns. Monkey-patching, at some way, leads you in the opposite direction of object oriented philosophy, since you add more responsibilities to an pre-existent class and increases it's public interface to serve a new funcionallity.
Besides, it's not explicit the behavior of that class and the public methods available. You cannot know, by looking at the class definition, what it makes and what is it's role at the system, and how it interact with other objects. It makes a simple task much more harder at the end.
Monkey patching makes everything much more smaller and simpler, apparently, but avoiding it makes your code much more maintanable, easier to debug, read and test, and much more elegant, since it is compliant to the "OOP" patterns.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install core_extensions
Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
