atifaziz

What's this?

Found an interesting [comment] in SqlDataReader's source code:

// this block of type specific shortcuts uses RyuJIT jit behaviours to achieve fast implementations of the primitive types
// RyuJIT will be able to determine at compilation time that the typeof(T)==typeof(<primitive>) options are constant
// and be able to remove all implementations which cannot be reached. this will eliminate non-specialized code for 

atifaziz

// This script is related the following blog entry by Mark Seeman titled,
// "Builder as a monoid":
//
// https://blog.ploeh.dk/2020/02/17/builder-as-a-monoid/
//
// It demonstrates a simpler approach to avoid the ceremony of "explicit
// endomorphism" by using merely delegates. It does so by replacing
// "IEndomorphism<T>" with "Func<T, T>" and then using "+" in lieu of
// "AppendEndomorphism<T>" to achieve the same effect.
//

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@echo off
setlocal
for /f "usebackq" %%f in (`PowerShell -C "([datetimeoffset](git ls -1 --pretty=%%cI)).ToUniversalTime().ToString('yyyyMMdd''T''HHmm')"`) do set COMMIT_TIMESTAMP=%%f
if not %ERRORLEVEL%==0 exit /b %ERRORLEVEL%
call "%~dp0pack.cmd" priv-%COMMIT_TIMESTAMP%
exit /b %ERRORLEVEL%

atifaziz

using System;
using System.IO;
using SharpLab.Runtime;

static class X
{
    public static bool HasFlag(this FileAttributes self, FileAttributes flag) =>
        (self & flag) == flag;

    [JitGeneric(typeof(FileAttributes))]

atifaziz

Compiling C to WebAssembly using Clang/LLVM & WASI

These are my notes. See also “[Compiling C to WebAssembly using clang/LLVM and WASI][fda]” by [Frank Denis], which was my starting point.

Assume the following example program in a file called example.c:

#include <stdio.h>

atifaziz

<#
MIT License

Copyright (c) 2019 Atif Aziz

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is

atifaziz

atifaziz

<?xml version="1.0" encoding="utf-8"?>
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
  <CodeSnippet Format="1.0.0">
    <Header>
      <Keywords>
        <Keyword>linq</Keyword>
        <Keyword>extensions</Keyword>
      </Keywords>
      <SnippetTypes>
        <SnippetType>Expansion</SnippetType>

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<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.1</TargetFramework>
  </PropertyGroup>

</Project>

atifaziz

yellow=<DIR>.+$
magenta=<(JUNCTION|SYMLINKD)>.+$
yellow=(?<=<(JUNCTION|SYMLINKD)>.+)\[.+\]$
cyan=(?<=\x20)(?i:[^\x20]+\.(cmd|bat|exe|com|ps1|wsh|wsf|vbs))$
gray=\(([0-9][0-9]?|[0-9][0-9,'.][0-9]*)\)