To add an element to the Bloom filter, we simply hash it a few times and set the bits in the bit vector at the index of those hashes to 1. In the following text, we will refer to a Bloom filter with k hashes, m bits in the filter, and n elements that have been inserted. Your false positive rate will be approximately (1-e-kn/m)k, so you can just plug the number n of elements you expect to insert, and try various values of k and m to configure your filter for your application.2

This leads to an obvious question:

The more hash functions you have, the slower your bloom filter, and the quicker it fills up.

The city of Dallas got poured out of court again yesterday in its decades long extra-legal persecution of Kennedy assassination expert Robert Groden, making the 82nd time the city has lost against Groden in its own municipal courts, not counting a major slap-down suffered by the city in the 5th U.S. Circuit Court of Appeals earlier in the summer. Because the city promised a federal judge they wouldn’t harass him until the federal case gets resolved, Groden says, the city has now set out to harass his assistant, ticketing the assistant for the grassy knoll banner even though Groden was standing right there at the time and says he told the code guy it was his sign and he put it up. If the city should get its wish and Groden not survive, if he should shuffle off to his everlasting reward before the federal civil rights case is resolved, God forbid, then at least I know that through the film his ghost will haunt Dallas City Hall forever.

Amid high youth unemployment driven by hiring cutbacks at industrial conglomerates, South Korea has become a new source of foreign workers for Japan. In mid-April, some 40 South Korean job seekers signed up for interviews at a job fair in Nagoya’s Nakamura Ward where 17 Japanese firms in the high-tech, manufacturing and retail industries were looking for prospects. Some companies point out that South Korean students also fit in with Japan’s corporate culture.

In 2013 it became the world’s first capital city to offer residents free public transport. Estonia as a whole has been following suit, and last year set the ambition of becoming the first country with free public transport nationwide. The use of public transport in Tallinn has gone up by 10%, while the number of cars in the city centre has gone down by 10%, meaning less congestion.

A report last week about Fxmsp hacker group claiming access to the networks and source code of three antivirus companies with offices in the U.S. generated from alleged victims statements that are disputed by the firm that sounded the alarm. Here’s the translation of the chat log:

Fxmsp talked about getting into the network of Trend Micro and stealing source code from the company, all without triggering detection. Here’s the translation of the chat log:

Fxmsp group members discuss about how they can move inside the network of a victim antivirus company and how they could connect without setting off an alarm.

In a sense, though, those were the instructions, and that was the burden, borne by the relatively unheralded crew of Apollo 10 fifty years ago this month. Delays in the completion of the lunar lander, also known as the Lunar Excursion Module, meant that Apollo 8 would be the first crewed lunar mission to fly the command module only, from which 1968’s famed “Earthrise” photo was taken. It fell to the crew of Apollo 9 in March 1969, to fly the first test mission of the lander into space, spending 10 days in Earth orbit.

Here’s an ode to the boring front-end developer, BFED if you will. The BFED embraces the constraints and limitations of the browser so that he/she doesn’t find him/herself in a world of Adaptive Design and UA sniffing because that world is horrible, ill-advised and costly. The BFED will also suggest the use of native form controls realising that browsers will enhance the experience where possible, particularly on mobile, and doesn’t try to control the look and feel too much as he/she knows that the brand will not suffer because of that decision.

Hit return to get a fresh command line, and exit your non-readline-enabled bash shell:

There are a great many shortcuts like autocomplete available to you if readline is enabled. you should get output similar to this:

You can see on the last four lines ( ) there is a table of key bindings that your terminal will pick up before readline sees them. If you encounter a problem where the terminal options seem to catch a shortcut key binding before it gets to readline, then you can use the program to unset that binding.

ZeroCater has successfully launched our core product, Managed Catering, into 6 markets and are excited to offer Snacks + Beverages to clients in San Francisco. With our $12M in Series B funding, we plan to expand Snacks and Catering nationally to new enterprise and Fortune 500 clients. ZeroCater is changing a $130 billion industry and continues to sustain year over year growth.

One of the most dramatic illustrations of both the benefits and downsides of Tesla’s approach to automaking comes from its decision to use 17-inch touch screens in its Model S and X. No automaker had ever used a screen even close to as large as the model Tesla used, and it instantly became a symbol of its entire approach to building cars like mobile devices. But rarely is the question asked: why haven’t other automakers kept up with Tesla’s competition and installed a similarly massive screen in their cars? Using a smaller, more expensive automotive grade screen might have cost as much or more per unit and might not have impressed as many consumers, but it might have at least saved Tesla from years of free replacements, bogged-down service centers, and frustrated customers.