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PEP 572 – Assignment Expressions
This is a proposal for creating a way to assign to variables within an expression using the notation NAME := expr.
Topics /
Programming Languages
The most popular blog posts about programming languages on Hacker News. 5,634 posts.
5612
PEP 374 – Choosing a distributed VCS for the Python project
Python Enhancement Proposals (PEPs)
5613
Introduction
Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.
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PEP 3104 – Access to Names in Outer Scopes
In most languages that support nested scopes, code can refer to or rebind (assign to) any name in the nearest enclosing scope. Currently, Python code can refer to a name in any enclosing scope, but it can only rebind names in two scopes: the local scope...
5615
Clojure - Deps and CLI Guide
In all the above scenarios you might want to use other Clojure and Java libraries (dependencies or 'deps'). These may be libraries you are writing locally, projects in git (e.g. on GitHub) or, commonly, libraries available in the Maven ecosystem and hosted by central repositories like Maven Central or Clojars.
5616
Designing with types: Making illegal states unrepresentable
Encoding business logic in types
5617
Functional options for friendly APIs
What follows is the text of my presentation, Functional options for friendly APIs that I gave at dotGo this year. It has been edited slightly for readability.
5618
Clojure - Rationale
Customers and stakeholders have substantial investments in, and are comfortable with the performance, security and stability of, industry-standard platforms like the JVM. While Java developers may envy the succinctness, flexibility and productivity of dynamic languages, they have concerns about running on…
5619
PEP 373 – Python 2.7 Release Schedule
This document describes the development and release schedule for Python 2.7.
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Overview ⚡ Zig Programming Language
Focus on debugging your application rather than debugging your programming language knowledge.
5622
More Dots: Syntactic Loop Fusion in Julia
After a lengthy design process (https://github.com/JuliaLang/julia/issues/8450) and preliminary foundations in Julia 0.5 (/blog/2016-10-11-julia-0.5-highlights#vectorized_function_calls), Julia 0.6 includes new facilities for writing code in the "vectorized"...
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Things that amuse me
I think the only serious gripe is what you call your biggest gripe, and I must say that I envy this in Haskell. As you know, in the eager world we tend to write out our own recursive functions, rather than use combinators. You give part of the reason; the other part is that deforestation and related transformations…
5625
PEP 393 – Flexible String Representation
The Unicode string type is changed to support multiple internal representations, depending on the character with the largest Unicode ordinal (1, 2, or 4 bytes). This will allow a space-efficient representation in common cases, but give access to full UC...
5626
PEP 318 – Decorators for Functions and Methods
The current method for transforming functions and methods (for instance, declaring them as a class or static method) is awkward and can lead to code that is difficult to understand. Ideally, these transformations should be made at the same point in the...
5627
research!rsc: Go & Versioning
The official Go proposal is at https://golang.org/issue/24301 , filed on March 20, 2018 and accepted on May 21, 2018.
5628
PEP 3146 – Merging Unladen Swallow into CPython
This PEP proposes the merger of the Unladen Swallow project 3 into CPython’s source tree. Unladen Swallow is an open-source branch of CPython focused on performance. Unladen Swallow is source-compatible with valid Python 2.6.4 applications and C extensi...
5629
PEP 263 – Defining Python Source Code Encodings
This PEP proposes to introduce a syntax to declare the encoding of a Python source file. The encoding information is then used by the Python parser to interpret the file using the given encoding. Most notably this enhances the interpretation of Unicode ...
5630
PEP 3107 – Function Annotations
This PEP introduces a syntax for adding arbitrary metadata annotations to Python functions 1.
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PEP 635 – Structural Pattern Matching: Motivation and Rationale
This PEP provides the motivation and rationale for PEP 634 (“Structural Pattern Matching: Specification”). First-time readers are encouraged to start with PEP 636, which provides a gentler introduction to the concepts, syntax and semantics of patterns.
5632
cgo is not Go
Some people, when confronted with a problem, think “I know, I’ll use cgo.” Now they have two problems.
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Racket: From PLT Scheme to Racket
The Scheme part of the name PLT Scheme is misleading, and it is often an obstacle to explaining and promoting PLT research and tools.
5634
Tutorial: Writing an Interpreter with PyPy, Part 1
This is a guest blog post written by Andrew Brown , with help from the PyPy developers on the pypy-dev mailing list. This tutorial's master...