iBeacons. Buying an iBeacon: Guide to Bluetooth LE Devices. Having trouble figuring out all of the options for iBeacons and Bluetooth LE devices?
You’re not alone. Every day there seems to be a new device or beacon being launched – and confusing things further, the terms iBeacon, beacon and Bluetooth LE often seem interchangeable. To try to make life slightly easier, this page is your resource and link list for the physical devices called ‘beacons’. Definitions First, however, a few simple definitions: Beacons: A beacon is any device that transmits a signal which allows another device to determine its proximity to the broadcaster. Bluetooth Low Energy: This is the specification for one type of signal that beacons transmit. iBeacon: The term iBeacon and beacon are often used interchangeably. Devices: The list below includes all devices that are capable of Bluetooth LE broadcasting. List of Bluetooth LE Devices Accent Advanced Systems iBks101 are one of a suite of products by Accent Advanced Systems. AIRCable USB Dongle BlueCats BlueSense Networks Estimote.
Toolbox - Regular Expression Tester - Test and Learn Regex Search Syntax. v1.31, 2006.05.01 by Robert Giordano Regular Expression Syntax: [agk] matches any one a, g, or k [a-z] matches any one character from a to z [^z] matches any character other than z [\\(\\)] matches ( or ) (in javascript, the escape slash must be escaped!)
. any character except \n \w any word character, same as [a-zA-Z0-9_] \W any non-word character \s any whitespace character, same as [ \t\n\r\f\v] \S any non-whitespace character \d any digit \D any non-digit \/ literal / \\ literal \ \. literal . \* literal * \+ literal + \? Literal ? \| literal | \( literal ( \) literal ) \[ literal [ \] literal ] \- the - must be escaped inside brackets: [a-z0-9 _.\-\?!] Examples: /\b(gr[ae]y)/ig,"GRay" Replaces any "gray" or "grey" with "GRay".
/\b(cat|dog)\b/ig,"pet" Replaces any "cat" or "dog" with "pet". /feb(ruary)? /( ){2,}/g," " Replaces 2 or more consecutive spaces with a single space. /^\s+|\s+$/g,"" Trim white space from both ends of a string. /\b(is)(?! You Don’t Know Anything About Regular Expressions: A Complete Guide. Regular expressions can be scary...really scary.
Fortunately, once you memorize what each symbol represents, the fear quickly subsides. If you fit the title of this article, there's much to learn! Let's get started. The key to learning how to effectively use regular expressions is to just take a day and memorize all of the symbols. This is the best advice I can possibly offer. . Yep - it's not fun, but just memorize them. You can be certain that you'll want to rip your hair out at one point or another when an expression doesn't work, no matter how much it should - or you think it should! The next step is to learn how to actually use these symbols! In this final section, we'll review a handful of the most important JavaScript methods for working with regular expressions. This one accepts a single string parameter and returns a boolean indicating whether or not a match has been found. You're most likely already familiar with the split method. The code above will alert a single "e.
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_2880x1800.jpg (2880×1800) Mobile Dev. The Toolbox: a directory of the best time-saving apps and tools. Mrdoob/three.js.