LambdaĬalculus alone can't do such a thing. Manner, but it doesn't allow by itself to embed recursive calls in a loop. The Y combinator is well known it allows to use lambda functions in a recursive The clean way: modifying the Y combinator I would like to discuss here about my two main functions. Think that most of these solutions don't use Python features otherwise than they should.Ĭlean lambda expressions working along with very standard loops lead to quick, efficient andįully usable tools for implementing tail-recursion optimization.Īs a personal convenience, I wrote a small module implementing such an optimizationīy two different ways. Or very tricky, I think it can be achieved with elegant, short and general solutions I even Optimizing tail-recursion in Python is in fact quite easy. Time rather than only three "Pythonic" functions, working in an interactive session rather than editing my code, etc.). Idea rather than on the process, having twenty short functions on my screen in the same This point of view sometimes however I like trying or implementing new ideasĪs tail-recursive functions rather than with loops for various reasons (focusing on the It has often been claimed that tail-recursion doesn't suit the Pythonic way of coding and that one shouldn't care about how to embed it in a loop. Probably the best high level description I have found for tail calls, recursive tail calls and tail call optimization is the blog postīy Dan Sugalski.I published a module performing tail-call optimization (handling both tail-recursion and continuation-passing style): Optimizing tail-recursion in Python This is because the last thing to happen in any of these functions is to call another function. This below function is TCOptimizable: def fact_h(n, acc): This function does things besides call another function in its return statement. This optimization can make recursive calls take constant stack space, rather than explode.Įxample: this factorial function is not TCOptimizable: from dis import dis In this case the optimization can be made that g just runs and returns whatever value it would have to the thing that called f. The key here is that f no longer needs stack space - it simply calls g and then returns whatever g would return. The only situation in which this happens is if the last instruction executed in a function f is a call to a function g (Note: g can be f). TCO (Tail Call Optimization) is the process by which a smart compiler can make a call to a function and take no additional stack space. We start with the obvious recursive definition unsigned fac(unsigned n)Īs we can see here, a sufficiently advanced optimizer can replace tail-recursion with iteration, which is far more efficient as you avoid function call overhead and only use a constant amount of stack space. Let's walk through a simple example: the factorial function implemented in C. This is not the case with the non-tail-recursive fact, and as such large values may cause a stack overflow. This means that even if I were to call (fact 1000000), I need only the same amount of space as (fact 3). In contrast, the stack trace for the tail recursive factorial looks as follows: (fact 3)Īs you can see, we only need to keep track of the same amount of data for every call to fact-tail because we are simply returning the value we get right through to the top. As such, the stack looks as follows: (fact 3) The first function is not tail recursive because when the recursive call is made, the function needs to keep track of the multiplication it needs to do with the result after the call returns. Scheme is one of the few programming languages that guarantee in the spec that any implementation must provide this optimization, so here are two examples of the factorial function in Scheme: (define (fact x) The most common use is tail-recursion, where a recursive function written to take advantage of tail-call optimization can use constant stack space. Tail-call optimization is where you are able to avoid allocating a new stack frame for a function because the calling function will simply return the value that it gets from the called function.
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points-excludeĮxposes ARP statistics from /proc/net/arp.Įxposes bcache statistics from /sys/fs/bcache/.Įxposes the number of configured and active slaves of Linux bonding interfaces.Įxposes system boot time derived from the kern.boottime sysctl.ĭarwin, Dragonfly, FreeBSD, NetBSD, OpenBSD, Solaris Note that these flags are mutually exclusive on collectors that support both. The exclude flags are used to indicate "all except", while the include flags are used to say "none except". Include & Exclude flagsĪ few collectors can be configured to include or exclude certain patterns using dedicated flags. To enable only some specific collector(s), use -collector.disable-defaults -collector. flag.Ĭollectors that are enabled by default can be disabled by providing a -no-collector. The tablesīelow list all existing collectors and the supported systems.Ĭollectors are enabled by providing a -collector. There is varying support for collectors on each operating system. cap-add=SYS_TIME, in order to access the required syscalls. On some systems, the timex collector requires an additional Docker flag, '-path.rootfs=/host ' network_mode: host pid: host restart: unless-stopped volumes: Image: quay.io/prometheus/node-exporter:latest container_name: node_exporter command: Path.rootfs as prefix to access host filesystem. This argument must match path in bind-mount of host root. If you start container for host monitoring, specify path.rootfs argument. The node_exporter access to the host namespaces.īe aware that any non-root mount points you want to monitor will need to be bind-mounted To deploy it as a Docker container because it requires access to the host system.įor situations where Docker deployment is needed, some extra flags must be used to allow The node_exporter is designed to monitor the host system. Ansibleįor automated installs with Ansible, there is the Prometheus Community role. The node_exporter listens on HTTP port 9100 by default. If you are new to Prometheus and node_exporter there is a simple step-by-step guide. To expose NVIDIA GPU metrics, prometheus-dcgm The Windows exporter is recommended for Windows users. Prometheus exporter for hardware and OS metrics exposed by *NIX kernels, written Fascia Board 0.6-in x 11-in x 6-ft Composite Peruvian Teak Fascia Deck Board. Fascia Board 0.75-in x 11.25-in x 12-ft PVC White Fascia Trim. Unmatched Beauty Natural Wood Cedar Shingle Siding Wood Siding Shingles. Our boards offer superior resistance to fade, stains, rot, mold and insects, and are impact resistant. Resources Where to Buy High Performance Fascia boards are low maintenance with no sanding, staining or painting required. Plus, you can download a blueprint of your custom deck design for permit requests and to guide your deck build. From color, railing and deck shape, our Deck Designer tool lets you hand pick every element of your new deck. 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Kearney, "Two important issues for companies like eBay are novelty and loyalty. According to Sherif Mityas, a vice president in the consumer business and retail practice at A.T. Yahoo having entered Japan in 1996 through a joint venture with SoftBank made the right moves to become the largest Internet access provider and the largest portal in Japan.Īfter its Japanese misadventure, eBay chose to expand into countries like China and Taiwan by acquiring leading auction websites, where it relied on local brands for growth and market share. According to analysts, however, the main reason was the dominance of Yahoo Auctions in the Japanese online auctions market. Several reasons were cited for eBay's failure in Japan. In February 2000, eBay entered into a joint venture with NEC Corporation (NEC), to form eBay Japan NEC held a 30 percent stake in the company while the rest was held by eBay Inc. Due to growing competition in the US from websites like Amazon, Yahoo, and AuctionWatch, eBay began exploring opportunities in other markets. eBay's International VenturesĮBay's international ventures began in late 1998. It was a person-to-person trading community, where sellers could list the items they wanted to put on sale, and specify the minimum bid and duration of the auction. Nor is it a primary information source.ĮBay was founded by Pierre Omidyar (Omidyar), a software programmer, in 1995 as AuctionWeb. It is not intended to illustrate either effective or ineffective handling of a management situation. This case study was compiled from published sources, and is intended to be used as a basis for class discussion. The 1st division is run primarily by the strongest warriors of the Royal Okoshi Bloodline with the King taking on the position as their General and Head General of all other divisions with the exception of the ' Zero Division'. The main priority of the Primal Forces is the defense of their planet, primarily from the destructive forces of Seven Dragon Lords and their unholy creations the demi-dragon or more commonly known as Remnants. In order to enroll in the military, a Saiyan must be a fighter candidate and have graduate from the Akuseijō-ki or attained the Iwazaru transformation. Their military forces are divided up into seven official divisions. The Primal Saiyans are militaristic in nature, possessed a powerful military known as the Primal Forces, only equal to their counterparts, the Superior Saiyans. Primal Saiyans have also been called "Moon-Bloods", however, this is said as more of an insult and was a slur coined by the Superior Saiyans. It becoming customary to thank their ancestors with a small prayer every time they access their transformations. This is due, in part, to the fact that the very energy around then, the energy that they use to fuel their transformation, are residual remnants of their ancestors power being channeled through them. Primal Saiyans also hold great respect for those that came before them, their ancestors holding an important roles within their society. As such a promise made is a promise kept, no matter how long it may take for them to complete it. Pride and honor are extremely important within their society, a Primal Saiyan's word being their bond, something that they'll stake their very lives on. Unlike Earthlings, they don't celebrate any yearly holidays, however, events such as ceremonies and rituals are held in high regard, the most important of these being the inauguration of the new Primal King which takes place after the death of the previous king. The desire to train is instinctual, an instinct put to good use through the protection of their planet warding off any would be invaders. For Primal Saiyan's training is an extremely common practice, even among those that aren't warrior candidates. Primal Saiyans naturally know how to fly, many working it out on their own without any amount of training. Since arriving on Planet Rewdesh, the concept of infiltration infants were abandoned. One of the most import civilian occupations being a Kingsmith. If their power level remains low even after a certain amount of time has passed they are classed as civilians, however, a Saiyan can still strive for honor even then. If their power level is up to a standard they're raised as warriors and become fighter candidates. Unlike Superior Saiyans, a Primal Saiyan's power level isn't measured as soon as they're born, instead waiting until they're older with most cases being around the ages of five to be measured. Once arriving here the environment began influencing their biology and as the generation passed they slowly evolved into a what they are now. Planet Rewdesh (惑星 ルデシュ, Wakusei Rudeshu), the Primal Saiyan homeworld is an extremely lush and fertile planet within the Central Sector of Universe 7. The planet has a natural gravity a hundred times heavier than their original planet, Planet Vegeta, making it a thousand times that of Earth's gravity. They crash landed on this planet after being separated from the rest of their race.
The game features the two dinosaur protagonists (Bob and Bub) as well as other characters from Bubble Bobble, even though the two games have distinctly different gameplay. Bubble Bobble 4 Friends Bub serves as the main character in Bubble Bobble 4 Friends. Whenever a player successfully disposes of a bubble group, a part of it is transferred onto the opponent's part of the screen. The Puzzle Bobble 2 / Bust-A-Move Again FAQ and Puzzle Bobble 2 EX / Bust-A-Move Again EX FAQ version 3.0 by Carl Chavez () & Poln. A quick guide for you: step 1: download the game and put the downloaded archive to the ‘roms’ folder within your MAME root directory. Cannon, who is presiding over the federal case concerning Mr. Bub appears once again in Bust-A-Move Islands, sharing the same role and appearance as in New Bust-A-Move. Each player competes on an area occupying half of the screen, dealing with identically generated bubbles. Should the player fail to release the bubbles within a specific time limit, they will be released automatically, unaffected by the pointer's aiming.Ī two-player mode is included as well. The EX is not seen on the title screen but. If the ceiling of the area is covered by too many bubbles, it will gradually descend the game is over when it nearly reaches the player-controlled pointer. Bust-A-Move Again EX is the alternate title of Puzzle Bobble 2 that is accessible from changing the BIOS region. When such bubbles form a group of three or more, they pop and disappear from the screen. The goal is to aim the bubbles in such a way that they will touch identically colored ones. Depending on the aiming, the bubbles may float up directly or bounce off the walls, changing their trajectory. You run over there without a second to lose And what comes next hey bust a move You want it, you got it, You want it, baby you got it (Just bust a move) You want it, you got it, You want it, baby you got it In this city ladies look pretty Guys tell jokes so they can seem witty Tell a funny joke just to get some play Then you try to make a move. Bust-A-Move (also known as Puzzle Bobble) is a real-time puzzle game in which the player controls a device called "pointer" at the bottom of the screen, aiming and releasing randomly colored bubbles upwards. The press conference can be viewed on YouTube.Now that it’s finally spring, it’s finally garage sale season! Read on below for this year’s sales in the Iowa City area: Homendy also noted that sometimes NTSB recommendations are not implemented and admitted that’s frustrating.Ī copy of the report can be seen on the NTSB media Twitter page. This is about addressing their needs, their concerns.” But that doesn’t mean they won’t issue a safety recommendation if they see a safety issue that needs addressed immediately.ĭuring questioning about the political officials who have come to the small village to see the site, including former President Donald Trump, Homendy said “enough with the politics.There is a community that’s suffering. She said the final report may take 12 to 18 months to complete and there’s a reason it takes so long - because the NTSB is very methodical in its investigation and that takes time. Homendy said they’re still in the fact-finding phase. “You cannot wait until they fail,” she said regarding the roller bearings. The NTSB will look at that and at tank car design and derailment damage, accident response, railcar design and maintenance procedures and practices, Norfolk Southern’s use of wayside defect detectors, and railcar inspection practices. Roller bearings have a life of 100,000 miles to 300,000 miles and many things can cause them to overheat, such as fatigue cracking, water damage, mechanical damage, loose bearings or wheel defects. Homendy said the focus of the investigation will be the wheel set and the bearings. All the cars had placards, but the plastic placards melted in the fire. At least 20 hazmat cars were part of the train carrying lubricants, cooking oil, flammable gas and the vinyl chloride, with 17 cars fully loaded. The NTSB said it will look at how to protect important placards that help first responders know what’s inside a hazardous chemical car. The temperature in one of the five cars carrying vinyl chloride had started increasing to the point where explosion could occur. In talking about the controlled burn of rail cars containing vinyl chloride, Homendy stressed the NTSB had no part in that decision, but will evaluate whether the vent and burn followed established guidelines. During deceleration, the wheel bearing failed and car 23 derailed,” she said. “We have no evidence that the crew did anything wrong. There was also no evidence of track defect. She said no operational issue has been found with the wayside defect detectors, but they’re still looking at them. When the crew received the critical alarm for the 253-degree temperature, they started to slow and stop the train. In this case, the Norfolk Southern threshold for stopping and inspecting a car is 115 degrees. Homendy said the rail company sets the threshold for action regarding temperatures recorded by wayside detectors. At milepost 49.81, the suspect bearing’s temperature was 253 degrees Fahrenheit above ambient. At the next milepost 69.01, the temperature was 103 degrees Fahrenheit above ambient. The first at milepost 79.9 showed a temperature of 38 degrees Fahrenheit above the ambient temperature outside which was 10 degrees Fahrenheit at the time. The report goes into detail about temperatures of the wheel bearings measured by the wayside defect detectors along the way, with at least three detectors passed before the derailment. During this deceleration, an automatic emergency brake application initiated, and train 32N came to a stop.” The train engineer increased the dynamic brake application to further slow and stop the train. The wayside defect detector, or hot bearing detector (HBD), transmitted a critical audible alarm message instructing the crew to slow and stop the train to inspect a hot axle. In explaining the four-page preliminary report, which refers to the train as Train 32N, she said they have determined that car 23, a hopper car carrying plastic pellets, was the car that triggered the derailment and that “it was the combination of the hot axle and the plastic pellets that started the initial fire.”Īccording to the report, “Train 32N was operating with a dynamic brake application as the train passed a wayside defect detector on the east side of East Palestine, Ohio at milepost (MP) 49.81. “Know that the NTSB has one goal and that is safety and ensuring that this never happens again,” she said. Bring out the vibrancy of its blue shell and friendly expression with your coloring skills. Immerse yourself in coloring Squirtle and let its playful spirit inspire you.ĭive into the world of Squirtle, the water-type Pokémon-a coloring page where you can bring Squirtle’s cheerful demeanor and aquatic charm to life. Let the flame on its tail burn brightly as you add vibrant hues. We created a Charizard coloring page where you can bring this legendary fire/flying-type Pokémon to life: Color Charizard’s fierce orange scales, sharp claws, and powerful wings. Unleash your creativity and embark on an exciting coloring adventure, capturing the fiery essence of Charizard on the page. Charizard’s Flaming Canvas: A Fiery Coloring Adventure! Uncover hidden treasures as you color this captivating scene, immersing yourself in the excitement of Pikachu’s adventurous journey. Bring Pikachu’s vibrant yellow fur to life and use deep shades to depict the cave’s shadows. Join Pikachu in a thrilling coloring page as it explores a mysterious cave. Let your imagination shine as you unveil the cave’s secrets alongside this curious Pokémon. Join us as we explore this collection of animated Pokémon adventures, where creativity takes flight, and young artists make their mark, one brilliant hue at a time. It’s not just great for kids, a New Zealand study showed that anxiety and depression could be reduced by coloring with just 10 minutes a day. These engaging coloring pages entertain and nurture essential skills like hand-eye coordination and attention to detail. Young fans can embark on a thrilling artistic journey with 12 mesmerizing Pokémon-themed coloring pages. It’s fair to say that Pokémon is as popular as ever. The latest movie Pokémon Detective Pikachu was a major hit in 2019, grossing 433.2 million dollars, and last year, the most recent video game was released on the Nintendo Switch and sold 6.5 million copies in its first week! With their immense popularity and lovable characters, Pokémon has become a cherished phenomenon that resonates with children everywhere. Step into the enchanting world of Pokémon, where imagination knows no bounds and colorful creatures captivate young hearts. |
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