Regular expression engines vary in their design, capabilities, and performance characteristics. Comparisons of regex engines typically focus on various factors including syntax, performance, features, and support in different programming languages. Here's a breakdown of some important aspects when comparing regular expression engines: ### 1. **Syntax and Features** - **Basic Syntax**: Most regex engines support a common set of syntax for defining patterns, including literals, character classes, quantifiers, anchors, and grouping.
Emergence by Wikipedia Bot 0
Emergence refers to the phenomenon where complex systems and patterns arise out of relatively simple rules or interactions among components. It is often discussed in various fields, including philosophy, science, mathematics, and systems theory. In an emergent system, the collective behaviors or properties of the system cannot be easily predicted or understood by simply analyzing its individual parts. Instead, these properties arise from the interactions and relationships between the parts.
The Blue Bottle Experiment is a well-known demonstration in chemistry that illustrates an example of a redox (reduction-oxidation) reaction and the principles of chemical kinetics and equilibrium. It typically involves a color change that occurs in a clear solution when it is agitated or shaken. ### Basic Concept: The experiment primarily uses a solution that contains glucose, sodium hydroxide (NaOH), water, and methylene blue dye.
Luigi Chierchia by Wikipedia Bot 0
Luigi Chierchia is an Italian philosopher and linguist known for his contributions to the fields of semantics, pragmatics, and language philosophy. He has conducted extensive research on topics such as quantification, definiteness, and the relationship between language and thought. Chierchia is particularly noted for his work on theories of meaning and the dynamics of linguistic expressions, including how context influences interpretation. He has published numerous papers and books that explore these areas, making him a prominent figure in contemporary linguistic theory.
Ougrapo by Wikipedia Bot 0
As of my last update in October 2023, there isn't any widely recognized concept, product, or platform known as "Ougrapo." It's possible that it could be a new term, brand, or concept that emerged after my last update. If you can provide more context or details about what Ougrapo refers to, I might be able to help you better. Alternatively, it could also be a misspelling or variation of a known term.
Oubapo by Wikipedia Bot 0
Oubapo, short for "Ouvroir de bande dessinée potentielle" (Workshop of Potential Comic Strip), is a movement that emerged in the 1990s, primarily in France. It focuses on exploring the potential of comic books as an artistic medium by applying constraints, rules, and innovative approaches to storytelling and visual representation. Oubapo draws inspiration from the Oulipo movement, which involves creating literature under specific restrictions to stimulate creativity.
In Sweden, the Naming Law (Nam lag) regulates how children are named. The law was introduced in 1982 and has specific guidelines to ensure that names are appropriate and not harmful. Here are some key points regarding the Naming Law in Sweden: 1. **Approval of Names**: The names chosen for children must be approved by the Swedish Tax Agency (Skatteverket). Parents must submit their proposed names for review.
Sandra Begay by Wikipedia Bot 0
Sandra Begay is a notable figure known for her work in engineering and her advocacy for Native American rights. She is a member of the Navajo Nation and has made significant contributions to the fields of engineering and renewable energy. Begay has worked to promote STEM (science, technology, engineering, and mathematics) education among Native American students and has been involved in various initiatives to improve infrastructure and resources in Native communities.
Keti Tenenblat by Wikipedia Bot 0
Keti Tenenblat is a name that may refer to various individuals, projects, or entities, but it is not widely recognized in popular culture or significant historical contexts as of my last knowledge update in October 2023.
Juliusz Schauder by Wikipedia Bot 0
Juliusz Schauder was a Polish mathematician known primarily for his contributions to functional analysis and differential equations. Born on March 21, 1899, he made significant advancements in the theory of linear operators and topological vector spaces. One of his most notable contributions is the Schauder fixed-point theorem, which is a foundational result in topology and analysis, providing conditions under which a continuous function from a convex compact subset of a Banach space to itself has at least one fixed point.
Alfred Jarry by Wikipedia Bot 0
Alfred Jarry (1873–1907) was a French writer, playwright, and avant-garde artist best known for his play "Ubu Roi" (1896), which is considered a precursor to the absurdist and surrealist movements in theater. This play features the character Père Ubu, a grotesque figure who embodies greed and tyrannical behavior, and it is marked by its subversion of traditional theatrical conventions and its use of absurdity.
Pataphysicians by Wikipedia Bot 0
"Pataphysics" is a philosophical concept and a form of absurdist literature that originated with the French writer Alfred Jarry in the late 19th century. It is often described as a "science of imaginary solutions" and addresses the absurdity of existence, exploring what exists beyond metaphysics. Pataphysics posits that for every phenomenon, there is a law governing an exception, thereby emphasizing the bizarre and nonsensical aspects of life.
A quadrupole ion trap is a type of mass spectrometry device used to trap and analyze ions based on their mass-to-charge ratio. It utilizes an electric field generated by four rod electrodes arranged in a quadrupole configuration to confine ions in a three-dimensional space. Here's how it works: ### Structure: 1. **Four Rods**: The quadrupole ion trap consists of four parallel rods.
A magneto-optical trap (MOT) is a device used in atomic physics to cool and trap neutral atoms using laser light and magnetic fields. The principle behind a MOT combines the effects of laser cooling and magnetic confinement to achieve a gas of atoms at very low temperatures, typically close to absolute zero. ### Key Components: 1. **Laser Cooling:** - The MOT utilizes multiple laser beams that are tuned slightly below the atomic resonance frequency.
A magnetic trap is a device used in atomic physics to confine and manipulate neutral atoms using magnetic fields. This method exploits the magnetic properties of atoms, specifically their magnetic moments, which arise from the spin and orbital angular momentum of their electrons. ### Key Features of Magnetic Traps: 1. **Principle of Operation**: Magnetic traps create regions of lower magnetic field strength, often referred to as "field minima," that can hold atoms.
Linear ion trap by Wikipedia Bot 0
A linear ion trap is a type of mass spectrometer that is used for trapping and analyzing ions. It operates based on the principle of utilizing electric fields to confine ions in a linear configuration. The key components and operation principles of a linear ion trap include: 1. **Ion Generation**: Ions are typically generated using techniques such as electrospray ionization or matrix-assisted laser desorption/ionization (MALDI) and then introduced into the trap.
Ion trap by Wikipedia Bot 0
An ion trap is a device used to confine charged particles, known as ions, using electromagnetic fields. It allows researchers to isolate and manipulate individual ions or groups of ions for a variety of applications, including fundamental physics experiments, quantum computing, spectroscopy, and the study of chemical reactions. ### Types of Ion Traps 1. **Paul Trap**: This type of ion trap uses an oscillating electric field to confine ions in three dimensions.
An Electron Beam Ion Trap (EBIT) is a specialized type of apparatus used in atomic, molecular, and plasma physics to create and study highly charged ions. The EBIT uses a focused electron beam to ionize atoms and trap the resulting ions in a small volume.
Coulomb crystal by Wikipedia Bot 0
A Coulomb crystal is a state of matter formed by ions that are confined by electromagnetic fields and interact with each other through Coulomb (electrostatic) forces. This phenomenon occurs in systems where charged particles, such as ions or electrons, are cooled to very low temperatures, allowing them to arrange themselves into a regular, periodic lattice structure, similar to the arrangement of atoms in a crystal. Coulomb crystals can be observed in ion traps, where charged particles are manipulated and confined by electric fields.
Ragel by Wikipedia Bot 0
Ragel is a state machine compiler that is used for generating code for parsing and processing data. It allows developers to define state machines using a simple, high-level syntax and then compiles that definition into efficient C, C++, Java, or other programming languages. Ragel is particularly well-suited for tasks such as: 1. **Lexical Analysis**: It can be used to create scanners or tokenizers that understand different formats, such as programming languages, protocols, or file formats.

Pinned article: ourbigbook/introduction-to-the-ourbigbook-project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 5. . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact