CookiePLMonster

#include <iostream>
#include <cmath>

// Sample of an optimizer bug in Visual Studio 2003 - 2019 (or more)
//
// Compiling this program in Release (/O1, /O2 or /Ox and LTCG) in both x86 and x64
// configurations produces a different output from unoptimized (Debug) configurations.
//
// Expected output: 709
// Produced output: 31

cossio

Erfcx[x_] := 2/Sqrt[Pi] HermiteH[-1, x]

GuillaumeDua

13 valuable things I learned using CMake

Author : Dua Guillaume
Date : 04-26-2020

Requirement : A first experience with CMake

Intro

As a modern C++ specialist, my job is to focus on software development, from a performance and quality perspective.

alf-p-steinbach

Why COW was deemed ungood for std::string.

COW, short for copy on write, is a way to implement mutable strings so that creating strings and logically copying strings, is reduced to almost nothing; conceptually they become free operations like no-ops.

Basic idea: to share a data buffer among string instances, and only make a copy for a specific instance (the copy on write) when that instance's data is modified. The general cost of this is only an extra indirection for accessing the value of a string, so a COW implementation is highly desirable. And so the original C++ standard, C++98, and its correction C++03, had special support for COW implementations, and e.g. the g++ compiler's std::string implementations used COW.

So why was that support dropped in C++11?

In particular, would the same reason or reasons apply to a reference counted immutable string value class?

arashpath

Problem

Bulk Download of Recordings and Gallery items

Solution

Write a simple script

How to use the script

1. Login to mi cloud https://i.mi.com
2. Navigate to https://us.i.mi.com/#record or https://us.i.mi.com/v1#gallery
3. In web browser (Chrome) press F12 to open Chrome developer tool

brson

Edit: This list is now maintained in the rust-anthology repo.

• Introduction
  • Understanding Over Guesswork
  • An Alternative Introduction to Rust
  • Rust and CSV Parsing
• Ownership
  • Where Rust Really Shines
  • Rust Means Never Having to Close a Socket
• The Problem with Single-threaded Shared Mutability

mcnees

%%-----------------------------------------------------------------------
%% Make your own quadrille, graph, hex, etc paper!
%% Uses the pgf/TikZ package for LaTeX, which should be part of
%% any modern TeX installation.
%% Email: mcnees@gmail.com 
%% Twitter: @mcnees
%%-----------------------------------------------------------------------

\documentclass[11pt]{article}

silgon

import JSON
###################
### Write data ####
###################
# dictionary to write
dict1 = Dict("param1" => 1, "param2" => 2,
            "dict" => Dict("d1"=>1.,"d2"=>1.,"d3"=>1.))
            
# pass data as a json string (how it shall be displayed in a file)
stringdata = JSON.json(dict1)

bsilver8192

py_binary(
  name = 'generate_compile_command',
  srcs = [
    'generate_compile_command.py',
  ],
  deps = [
    '//third_party/bazel:extra_actions_proto_py',
  ],
)

eyecatchup

git commit stats

Commands to get commit statistics for a Git repository from the command line -
using git log, git shortlog and friends.

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