![]() Quotient ::= atom "/" atom | atom "/" quotient Here's an untested and at any rate incomplete CFG demonstrating the technique:Įxpr ::= term | term "+" expr | term "-" expr ![]() Then the user can insert parentheses to disambiguate. Perhaps a better choice, especially for an interactive calculator, is to adopt partially ordered operator precedence, and reject the expression as ambiguous. You could make 1/2x where x = 4 evaluate to either 2 or 0.125, but either choice will have surprising results in some cases or to some people. but that's dead now.īut it's really neat to see how this all started from a day or two of hacking on a solution to a simple problem. I can't find Ariya's original 2004 announcement, I think the original link was. One of those was Ariya Hidayat's "SpeedCrunch", which has been actively maintained up to the present day. His blog post elicited several rapid responses from developers taking his PyQt-based mockup and turning it into a 'real' application (, ). Back then developers were often just unthinkingly cloning 'skeuomorphic' interfaces like Apple used back then, designing user interfaces that resembled physical objects instead of taking advantage of the opportunities afforded by computers. Writing and defining operations and variables is not as difficult as it sounds, since you benefit from rich libraries of presets, but also the liberty of customizing elements.Fun fact about SpeedCrunch history, the software descends from an off-hand blog post by Roberto Alsina, a KDE developer, complaining about KCalc usability. Taking everything into consideration, we can state that SpeedCrunch is a powerful calculator which is sure to help you solve some of the most complex expressions. You can change the result character display type, angle unit, and general behavior for more comfort. ![]() ![]() Additionally, the application allows you to export results under the plain text format, or HTML. All results are shown and saved in the large canvas, from which you’re able to send to clipboard. Syntax highlighting makes it easy to tell variables from constants, and functions. Variables can be configured can saved for later use, and even looked up in case you create an abundant list. You easily find that the application is capable of carrying out calculus for algebra, geometry, unit conversion, electronics, as well as radio frequencies, making use of quite an abundance of operators and functions. These panels can be detached and placed anywhere on screen in case you want to always have them in plain sight. The confusion is mostly created because of the lack of a numerical pad, but the application is a professional tool, while going through the menus reveals most supported functions.ĭown in the view menu, you’re able to access an impressive variety of helpful libraries, such as the formula book, functions list, variables, constants, and even history. You might end up scratching your head for a while, because the interface is initially an empty canvas with an associated editing area, where your expression is written. Impressive libraries of functions and formulas There are various types of calculators, ranging from simple operations to complex expressions, which is the type you’re able to achieve with SpeedCrunch. A computer is capable of performing calculus with large numbers and complex expressions in less than a second, thus helping in most domains of activity to also deliver accuracy.
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