matu3ba

#!/usr/bin/env sh
# Building zig in debug mode
cd zigrepo
mkdir -p build/ && cd build/ && cmake .. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_PREFIX_PATH="$HOME/dev/git/bootstrap/zig-bootstrap/musl/out/host/" -GNinja && /usr/bin/time -v ninja install  && cd ..
# add zig stages 3 to PATH

zig test --debug-log compilation  -freference-trace --test-filter fubar arenas.zig
zig test --debug-log sema -freference-trace thread.zig

matu3ba

const std = @import("std");

fn t1init(alloc: std.mem.Allocator, path1: []const u8) ![]const u8 {
    const stdout_wr = std.io.getStdOut().writer();
    try stdout_wr.writeAll("t1init"); // prevent compiler to optimize away this fn
    return try alloc.dupe(u8, path1);
}

fn t2init(alloc: std.mem.Allocator, path2: []const u8) ![]const u8 {
    _ = path2;

matu3ba

128bit
(ins)[misterspoon@pc tryzig]$ hyperfine ./addo_crt ./addo_cstruct 
Benchmark 1: ./addo_crt
  Time (mean ± σ):      1.083 s ±  0.006 s    [User: 1.082 s, System: 0.001 s]
  Range (min … max):    1.072 s …  1.094 s    10 runs
 
Benchmark 2: ./addo_cstruct
  Time (mean ± σ):      1.077 s ±  0.003 s    [User: 1.075 s, System: 0.001 s]
  Range (min … max):    1.073 s …  1.082 s    10 runs
 

matu3ba

Assuming MIN < x < MAX:

trick	operation/effect	note
x & (x - 1)	clear lowest 1 bit	if result 0, then x is 2
`x	(x + 1)`	set lowest 0 bit
`x	(x - 1)`	set all bits to right of lowest 1 bit
x & (x + 1)	clear all bits to right of lowest 0 bit
x & -x	extract lowest 1 bit
~x & (x + 1)	extract lowest 0 bit (as 1 bit)

matu3ba

diff --git a/lib/std/fs.zig b/lib/std/fs.zig
index 31354a278..f06db4943 100644
--- a/lib/std/fs.zig
+++ b/lib/std/fs.zig
@@ -2085,6 +2085,44 @@ pub const Dir = struct {
         }
     }
 
+    pub const CountStepsToFolderWithEntryError = error{
+        InvalidKind,

matu3ba

wasm2.c ──────►┌──────┐   ┌──────┐   ┌────┐   ┌──────┐   ┌────┐   ┌────┐   ┌────┐
               │wasm2c│──►│zig1.c│──►│zig1│──►│zig2.c│──►│zig2│──►│zig3│──►│zig4│
          ┌───►└──────┘ ┌►└──────┘┌─►└────┘   └──────┘┌─►└────┘   └────┘   └────┘
          │  zig1.wasm ─┘         │                   │     ▲        ▲        ▲
CC ───────┴───────────────────────┴───────────────────┘     │      binary-identical
                                                            │
idealized, see TODO:                                        │(optional)
used LLVM libs ─────────────────────►┌────┐                 │
 │LLVM│─────────────────┘

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    /// Use this for additional posix spawn attributes.
    /// Do not set spawn attribute flags and do not modify stdin, stdout, stderr
    /// behavior, because those are set in the platform-specific spawn method.
    posix_attr: if (os.hasPosixSpawn) ?os.posix_spawn.Attr else void,
    posix_actions: if (os.hasPosixSpawn) ?os.posix_spawn.Actions else void,
            
            
    .posix_attr = if (os.hasPosixSpawn) null else undefined,
    .posix_actions = if (os.hasPosixSpawn) null else undefined,

matu3ba

#!/usr/bin/env sh
#sript to download chunklist streams videos

#ffmpeg -i "url_path_to_file.m3u8" -bsf:a aac_adtstoasc -vcodec copy -c copy -crf 50 file.mp4
ffmpeg -i "uri/chunklist_somehash.m3u8" -bsf:a aac_adtstoasc -vcodec copy -c copy -crf 50 file.mp4

matu3ba

# powershell script to parse devkit version and install Zig
# assume: 1. devkit in dir devkit, zig in dir zig in same dir
#         2. powershell scripts executable (execution in shell):
#         Get-Content bZig.ps1 | PowerShell.exe -noprofile -

# parse pip install
$draftpathninja = pip show ninja
$pathninja = $draftpathninja[7].Split(" ")[1]
$joinpath = -join($pathninja, "\ninja\data\bin")
$env:Path += $joinpath

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$response = Invoke-RestMethod -Uri "https://ziglang.org/download/index.json"
$downloadlink = $response.master.'x86_64-windows'.tarball
Invoke-WebRequest -Uri "$downloadlink" -OutFile "$zigdl.zip"

# TODO finish this up