In FoxPro/Visual FoxPro, it is also utilised to point specific go by reference of variables when calling methods or features (but It is far from an tackle operator).[39]
In Dyalog APL, @ is applied to be a useful way to modify or swap data at precise destinations within an array.
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Its use in commerce and accounting ongoing to the existing working day, lending eventually towards the symbol’s unique English-language name, the “commercial a.” It remained rather obscure, Nevertheless, and wasn't normally present on keyboards or in character sets for computing.
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just about every supply I discovered appeared to have a special day to the origin with the "at" image, so I'm not going to commit to a certain day. let us just say it had been a very long time in the past—at least in the Middle Ages.
Several theories posit its primary conception like a form of ligature combining the letter “a” with One more character or diacritic. The classicist Berthold Ullman prompt it signifies the Latin ad
More a short while ago, if you employ Twitter, you know that you reveal a reply to an individual by prefacing his or her name Using the @ @ image, nevertheless it was not that way in the early times of Twitter. consumers started off Placing @ prior to another person's name to indicate that it had been a reply, and the people today at Twitter noticed and wrote it into your process to ensure that whenever you hit the reply connection, it routinely inserts the @ symbol.
Describing how we get from your Latin term "advert" for the “at” symbol, Michael Quinion points out on his website earth Wide words and phrases, that in the event the symbol was created by hand (I feel by scribes in the Middle Ages) “the upstroke with the ‘d’ curved around to the still left and prolonged across the ‘a.
In Portugal it may be Utilized in typing and textual content messaging with the which means "french kiss" (linguado).[citation essential]
, “one-fourth”), which represented the capacity of a normal amphora, a vessel used to retailer and transport liquids, cereals, as well as other items. This use with the symbol was so popular in Mediterranean trade that it's nonetheless known as arroba
In modern day English utilization, @ is really a professional image, this means at and at the rate of or at the cost of. It has hardly ever been Utilized in financial ledgers, and isn't Employed in typical typography.[twelve]
it's lengthy been Utilized in Catalan, Spanish and Portuguese as an abbreviation of arroba, a unit of bodyweight comparable to twenty five lbs ., and derived in the Arabic expression of "the quarter" (الربع pronounced ar-rubʿ).[9] A symbol resembling an @ is found in the Spanish "Taula de Ariza", a registry to denote a wheat shipment from Castile to Aragon, in 1448.[10] An Italian academic, Giorgio Stabile, claims to possess traced the @ symbol towards the sixteenth century, inside of a mercantile document despatched by Florentine Francesco Lapi from Seville to Rome on may perhaps 4, 1536.
In Ada 2022, @ will be the focus on identify image, an abbreviation from the LHS of the assignment; it's made use of to avoid repetition of potentially extensive names in assignment statements.