Bob Pusateri
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  • The Luhn Algorithm

    calendar Feb 20, 2020 · Computing Powershell  ·
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    Checksums can be very helpful for validating that data is intact and free from simple mistakes. They are extremely fast to calculate, and computing power has made them all but trivial over the past few decades. Because of this, checksums often hide in plain sight. One of these is the Luhn Checksum, which is produced by …


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  • Signed Integer Ranges: Why and How

    calendar Feb 26, 2015 · Computing Data Types  ·
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    Whether you are working in T-SQL, Oracle, MySQL, C#, or Java, the range of possible values for a signed (positive or negative) 32-bit integer is from or (-2,147,483,648) to or (2,147,483,647). The fact that it's so consistent across so many different platforms (and also against plenty of others I didn't list) means …


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Bob Pusateri

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