language-specifications

Where can I find the C# 5 language specification? [closed]

August 21, 2023 by Tarik

If you have Visual Studio 2012 installed, you will find specification somewhere there: c:\Program Files (x86)\Microsoft Visual Studio 11.0\VC#\Specifications\1033\CSharp Language Specification.docx similar with VS2013: c:\Program Files (x86)\Microsoft Visual Studio 12.0\VC#\Specifications\1033\CSharp Language Specification.docx VS2015: c:\Program Files (x86)\Microsoft Visual Studio 14.0\VC#\Specifications\1033\CSharp Language Specification.docx

Importing classes and namespaces in PHP: What difference does a leading backslash make?

April 29, 2023 by Tarik

The manual specifies the backslash as unnecessary, which naturally means that if you still use it that the meaning is equivalent. However, as you have pointed out, the manual says that it is supposedly not allowed, which is false. However, there is something else troubling with the manual. They advertise this: // importing a global … Read more

Is the shortcircuit behaviour of Python’s any/all explicit? [duplicate]

April 15, 2023 by Tarik

The behaviour is guaranteed. I’ve contributed a patch, which was accepted and merged recently, so if you grab the latest sources you will see that the short-circuiting behaviour is now explicitly enforced. git clone https://github.com/python/cpython.git grep Short-circuit cpython/Lib/test/test_builtin.py

Problem understanding C# type inference as described in the language specification

March 24, 2023 by Tarik

UPDATE: My initial investigation on the bus this morning was incomplete and wrong. The text of the first phase specification is correct. The implementation is correct. The spec is wrong in that it gets the order of events wrong in the second phase. We should be specifying that we make output type inferences before we … Read more

Where Can I Find the C# Language Specification 6.0? [closed]

January 30, 2023 by Tarik

At time of writing (May 2016) Microsoft hasn’t yet finished updating the spec for C#6. In the meantime, I put up Microsoft’s latest current draft of the C#6 spec here: https://github.com/ljw1004/csharpspec/blob/gh-pages/README.md This current draft is almost finished, save for a few remaining TODO comments and checking. (This version has been converted into github+markdown, but it … Read more

Can you add new statements to Python’s syntax?

December 9, 2022 by Tarik

You may find this useful – Python internals: adding a new statement to Python, quoted here: This article is an attempt to better understand how the front-end of Python works. Just reading documentation and source code may be a bit boring, so I’m taking a hands-on approach here: I’m going to add an until statement … Read more

C# short/long/int literal format?

October 9, 2022 by Tarik

var d = 1.0d; // double var d0 = 1.0; // double var d1 = 1e+3; // double var d2 = 1e-3; // double var f = 1.0f; // float var m = 1.0m; // decimal var i = 1; // int var ui = 1U; // uint var ul = 1UL; // ulong var … Read more

Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?

October 2, 2022 by Tarik

In Python 2.x this is not guaranteed as it is possible for True and False to be reassigned. However, even if this happens, boolean True and boolean False are still properly returned for comparisons. In Python 3.x True and False are keywords and will always be equal to 1 and 0. Under normal circumstances in … Read more