Double Hash Sign. . Nov 19, 2010 · What does a double hash (##) in a macro mean?

. Nov 19, 2010 · What does a double hash (##) in a macro mean? Asked 15 years, 1 month ago Modified 10 years, 10 months ago Viewed 5k times Mar 21, 2016 · The client downloads the hash and the file, re-computes the hash, and verifies that it matches the downloaded hash; this "proves" that the file was untampered with. The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔. Not feeling breakfast? Enjoy an $8 2 Snack Wrap® Meal for a limited time only. Jul 11, 2025 · In hashing there is a hash function that maps keys to some values. The number sign or hash symbol, #, has long been used in information technology to highlight specific pieces of text. In cryptography, SHA-1 (Secure Hash Algorithm 1) is a hash function which takes an input and produces a 160- bit (20- byte) hash value known as a message digest – typically rendered as 40 hexadecimal digits. Nov 13, 2025 · 9. There are various ways to use this approach, including double hashing, linear probing, and quadratic probing. Feb 23, 2014 · If you want to perform double hashing, you will need two hash functions.

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