AutoFill feature in Excel helps you automatically enter data. If you are entering a predictable series (e.g. 1, 2, 3…; days of the week; hours of the day) you can use the AutoFill command to automatically extend the sequence. AutoFill Sequences For Excel to know how to fill in the [...]
MPEG MP4 is a container format that allows video, audio and other related information to be bundled together in a single file. It is largely based on the QuickTime file format. It supports a wide range of codecs. Structure of MP4 Files ISO Base Media File Format (ISOBMFF, MPEG-4 Part [...]
A single media signal is called Elementary Stream or just Stream. People usually mean the same thing when they refer to the Video Stream as Codec, Media or H.264 Stream. A media container format specification describing how different multimedia data elements (streams) and metadata coexist in files. Common container formats [...]
Aspect ratio is simply the ratio of an image’s width to its height. It is also know as display aspect ratio(DAR) or picture aspect ratio (PAR). If the ratio of an image is different than the ratio of your screen, you may not see the whole image. \begin{align*} Aspect\ Ratio [...]
What Is Critical Thinking Critical thinking is careful goal-directed thinking. It is the process of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and evaluating information to reach an answer or conclusion. A critical thinker can possess mindsets which could include: Ask relevant, clear questions with a precise and limited scope.Gather [...]
Introduction Lookahead and lookbehind, collectively called "lookaround", are zero-length assertions just like the start and end of line. Lookaround actually matches characters, but then gives up the match, returning only the result: match or no match. They do not consume characters in the string, but only assert whether a match [...]
Introduction Backreferences match the same text as previously matched by a capturing group. Suppose you want to match a pair of opening and closing HTML tags, and the text in between. By putting the opening tag into a backreference, we can reuse the name of the tag for the closing [...]
Capturing Group Capturing groups are a way to treat multiple characters as a single unit. They are created by placing the characters to be grouped inside a set of parentheses. For example, the regular expression (dog) creates a single group containing the letters "d" "o" and "g". The portion of [...]
The metacharacter \b is an anchor like the caret and the dollar sign. It matches at a position that is called a "word boundary". This match is zero-length. It is common to call an alphanumeric sequence a word. All characters that are not "word characters" are "non-word characters". Different positions [...]
The caret (^) is the starting anchor, and the dollar sign ($) is the end anchor. The regular expression ^A will match all lines that start with an uppercase A. The expression A$ will match all lines that end with uppercase A. If the anchor characters are not used at [...]