Friday, February 16, 2018

Alternative approach to bitflags in C++

Just wondering about a short, expressive and alternative way to implement bitflags in C++11.

Right now I don’t plan to adopt this idiom, but it doesn’t look so bad.

Wednesday, February 14, 2018

One grid to rule them all

I’ve just learned CSS Grid. It feels like an improvement over Flexbox, and although it’s more powerful, it’s actually a little simpler to wrap your head around. I liked Flexbox a lot, and I did many great things with it. I’m hoping to make even more stuff with Grid now. Newer browsers have been supporting it since last year, so if older browser compatibility is not an issue, it’s good to go.

I learned Grid in a couple minutes by watching this video, which is pretty good in teaching the concepts:

Friday, February 9, 2018

I hate the invasive Dropbox client

Very hard to completely disable the Dropbox client, which sneaks its updater into every corner of my new Windows 10 system. Here’s what I had to do to finally get rid of it:

  • On Dropbox client, Settings, uncheck start automatically;
  • Disable “DbxSvc” and two “Dropbox Update Service” in services.msc;
  • Disable startups at Task Manager > Startup tab;
  • Disable services in Control Panel > Task Scheduler > Task Scheduler Library.

I want Dropbox client to update only when I run Dropbox. This invasive behavior is completely unnecessary.

Sunday, January 7, 2018

Ibanez JPM weight

I’ve been searching around the weight of an Ibanez JPM, just like the P2 I own, which I have no means to weight right now. I found three guitars on, with similar measures:

  • 2000 P2, 7 lbs 5 oz, 7.31 lbs, 3.32 kg
    • nut profile, .740", 18.8 mm
    • 12th profile, .820", 20.8 mm
  • 1998 P4, 7 lbs 6 oz, 7.38 lbs, 3.35 kg
  • 1998 P4, 7 lbs 6 oz, 7.38 lbs, 3.35 kg
  • 1995 P2, 7 lbs 6 oz, 7.38 lbs, 3.35 kg

The JPM seems to be a very consistent guitar, even in the weight.

Wednesday, December 13, 2017

A div with a post-it 3D look

This just caught my eye while reading this thing. At first I searched for the image, but to my surprise it was all about CSS sorcery:

      .postit {
        position: relative;
        display: inline-block;
        width: 250px;
        border-bottom-right-radius: 36px 12px;
        padding: 15px 15px 10px 10px;
        border: 1px solid #e0dcbf;
        background-color: #fff8dc;
        margin-bottom: 12px;
      .postit::after {
        content: "";
        display: block;
        position: absolute;
        width: 80%;
        height: 30px;
        bottom: 18px;
        right: 18px;
        z-index: -1;
        transform: rotate(3deg) skew(8deg);
        box-shadow: 13px 18px 6px rgba(0,0,0,0.3);
    <div class="postit">text</div>

Saturday, December 9, 2017

A C++ container which keeps insertion order

C++ is a poorly designed programming language, and I live a love-hate relatioship with it.

On my vacation days, when working on WinLamb for the next version of SRTEd, I needed a container to keep track of the order the elements were inserted. Among the many useless obscure things that C++ has, it doesn’t have such a container. So I had to write one, which after much struggle I named it the held_map.

Usage example, including iterator support for C++11 range-based for loop:

held_map<wstring, wstring> all = {
  { L"initial", L"blab" },
  { L"initial2", L"bleb" }

all[L"first"] = L"abcdef";
all[L"second"] = L"123456";

for (held_map<wstring, wstring>::entry& e : all) {
  wstring key = e.key;
  wstring val = e.value;

At first I wondered about using a sentinel linear search, line the one used within store. But then I realized that 99% of the time I’ll be using a string as the key with few elements inserted, thus the initial copy of the string at each search would take away the performance gains of the sentinel algorithm. So I decided to stick to an ordinary linear search.

Friday, December 8, 2017

Avast antivirus sucks

Last month, after having had enough of Avira antivirus intrusive ads popping on my screen all day, I removed it and installed Avast. Then I started seeing my whole trusty Windows 7 x64 going slow, mainly when switching between processes, but until then I blamed the almost 8 years old computer.

That was until yesterday, while debugging C++ in Visual Studio, when I noticed an Avast DLL being loaded in the console. What the hell? It seems that Avast was somewhat injecting its DLL everywhere, making everything go slow. I immediately uninstalled Avast, and instantly my computer became fast as before.

So far I’m running no antivirus program, and I’m in doubt if I really need one. It feels a bit insecure, but at the same time so... fresh.