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Faster remainders when the divisor is a constant: beating compilers and libdivide

Daniel Lemire

I believe that all optimizing C/C++ compilers know how to pull this trick and it is generally beneficial irrespective of the processor’s architecture. In concrete terms, here is the C code to compute the remainder of the division by some fixed divisor d : uint32_t d =. ; // your divisor > 0. Can we do better?

C++ 279
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Advent Calendars For Web Designers And Developers (December 2021 Edition)

Smashing Magazine

JVM Programming Advent Calendar. Created by Eric Wastl, this is an advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. C# Advent Calendar. If you don’t have a Figma account, don’t worry, it’s free.) Amy Dutton on Twitter.

Design 107
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Web Performance Bookshelf

Rigor

Steve Souders, plus Dion Almaer, Doug Crockford, Ben Galbraith, Tony Gentilcore, Dylan Schiemann, Stoyan Stefanov, Nicole Sullivan, Nicholas C. Javascript: The Ultimate Beginner’s Guide to Learn JavaScript Programming Step by Step. You only have a few seconds to get compelling content onto the screen. ” – Andy King, 2003.

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Fundamentals of table expressions, Part 5 – CTEs, logical considerations

SQL Performance

T-SQL supports it starting with SQL Server 2005. What’s recommended, albeit harder to achieve, is to instill good programming practices in the organization, including the termination of all statements. ) SELECT orderyear , numcusts FROM C ; However, the same does not hold true for a query that is based on CTEs.

C++ 140
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SQL Server I/O Basics Chapter #2

SQL Server According to Bob

As ​​ the ​​ administrator of a SQL Server 2005 installation, ​​ you will find that ​​ visibility into ​​ the ​​ SQL Server ​​ I/O ​​ subsystem ​​ has been ​​ significantly increased.

Servers 40
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Linux Load Averages: Solving the Mystery

Brendan Gregg

TABLE OF EXP(-T/C) FOR T = 5 SEC. EXPFF: EXP 0.920043902 ;C = 1 MIN EXP 0.983471344 ;C = 5 MIN EXP 0.994459811 ;C = 15 MIN. The oldest change in the entire Linux repo dates back to 2005, when Linus imported Linux 2.6.12-rc2, 90491 N|rnberg (Germany) Consulting+Networking+Programming+etc'ing 42.

Latency 111
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Data Mining Problems in Retail

Highly Scalable

Customer retention programs can require the identification of customers who are likely to stop the relationship with a retailer but can change their minds under the influence of incentives. This metric reveals customers with high revenue potential, hence it can be used in loyalty programs and usage expansion campaigns. Kleinberg, C.

Retail 152