Sutter's Mill

APRIL 30, 2012

I’m seeing many younger programmers picking up C++. The average age at C++ events over the past year has been declining rapidly as the audience sizes grow with more and younger people in addition to the C++ veterans. How young were you when you wrote your first program? This kid seems pretty exceptional. Welcome, Wasik!

C++ 40

C++ Programming Media Games 40

Smashing Magazine

DECEMBER 2, 2021

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 120

Design Development Programming Website 120

Sutter's Mill

JANUARY 11, 2021

An assertion documents the expected state of specific program variables at the point where the assertion is written, in a testable way so that we can find program bugs — logic errors that have led to corrupted program state. Assertions are only about finding bugs, not doing program work. Bonus: [[assert: ?

C++ 81

C++ Programming Code Testing 81

Sutter's Mill

JUNE 3, 2021

Briefly, what is the difference among: (a) undefined behavior Undefined behavior is what happens when your program tries to do something whose meaning is not defined at all in the C++ standard language or library (illegal code and/or data). By definition, if a function’s preconditions are violated, then the results are not specified.

C++ 73

C++ Programming Lambda Code 73

Nick Desaulniers

APRIL 18, 2014

At the lowest level, all computers are programmed with strings of ones and zeroes. When you program in machine language, you are controlling the computer at its brainstem, the root of its existence. So a whole Babel of computer languages has been created for programmers: FORTRAN, BASIC, COBOL, LISP, Pascal, C, PROLOG, FORTH.

C++ 98

C++ Programming Code Virtualization 98

Sutter's Mill

FEBRUARY 17, 2020

C++ “move” semantics are simple, and unchanged since C++11. Move: What it is, and how to use it In C++, copying or moving from an object a to an object b sets b to a ’s original value. This post is an attempt to shed light on that situation. That’s it for what advanced users need to know. Yes, but don’t.

C++ 98

C++ Testing Design Programming 98

Sutter's Mill

MAY 1, 2023

Simple, mathematically safe, and efficient chained comparisons ( commit ) P0515 “Consistent comparison” (aka “spaceship”) was the first feature derived from this Cpp2 work to be adopted into the ISO Standard for C++, in C++20. Thank you again to everyone who helped land this Cpp2 feature in the ISO C++ Standard.

C++ 97

C++ Virtualization Lambda Code 97

Testlodge

AUGUST 9, 2023

When there are multiple options for a decision, each decision outcome should be exercised before moving on to the next decision. Finally, once all the decision outcomes on the baseline path have been covered, apply the same approach to all subsequent paths until all the decision outcomes in the specified code have been exercised.

Testing 75

Testing Software Software C++ 75

Sutter's Mill

JANUARY 25, 2021

In the post-C++20 contracts proposal at [3], this is partly captured by the proposed basic levels of default , audit , and axiom , roughly intended to represent “cheap,” “expensive,” and “impossible” respectively. P0542: Support for contract based programming in C++” (WG21 paper, June 2018). Dos Reis, J. Meredith, N.

C++ 63

C++ Programming Cache Testing 63

Percona

AUGUST 30, 2023

This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. psql "host=localhost user=postgres options='-c synchronous_commit=off'" psql (14.8) Object-level settings PostgreSQL allows us to specify the parameter specific to a program block, like a PL/pgSQL function.

Database 120

Database Servers Open Source Tuning 120

Brendan Gregg

DECEMBER 21, 2019

Embedded C. # # Tone generation from: [link] # # 29-Apr-2019 Brendan Gregg Created this. This is the culmination of five years of work: the BPF kernel runtime, C support, LLVM and Clang support, the BCC front-end, and finally the bpftrace language. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python

C++ 52

C++ Education Java AWS 52

Brendan Gregg

DECEMBER 21, 2019

Embedded C. # # Tone generation from: [link] # # 29-Apr-2019 Brendan Gregg Created this. This is the culmination of five years of work: the BPF kernel runtime, C support, LLVM and Clang support, the BCC front-end, and finally the bpftrace language. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python

C++ 52

C++ Education Java AWS 52

O'Reilly

DECEMBER 12, 2023

This ruling in itself raises many questions: how much creativity is needed, and is that the same kind of creativity that an artist exercises with a paintbrush? If a human writes software to generate prompts that in turn generate an image, is that copyrightable? For a company like O’Reilly Media, a related question comes into play.

Artificial Intelligence 133

Artificial Intelligence Google Media Processing 133

The Morning Paper

DECEMBER 8, 2019

On the last morning of the conference Daniel Bittman presented some of the work being done in the context of the Twizzler OS project to explore new programming models for NVM. The starting point is a set of three asumptions for an NVM-based programming model: Compared to traditional persistent media, NVM is fast. What about security?

Hardware 56

Hardware Programming Media Storage 56

Sutter's Mill

MARCH 25, 2021

Some of these are exercised by the “wrong order” permutations above, but even call sites that remember the right argument order can make mistakes about the actual values. But is (b) always better than (c), in other examples? c) A pointer that is not null void f( int* p ) [[pre( p != Consider using a class instead.

C++ 62

C++ Design Code Systems 62

ScaleOut Software

AUGUST 20, 2020

They make use of standard object-oriented concepts and languages (such as C#, Java, and JavaScript). The mock development environment is shown below: Once a model has been created, it can be tested using a client test program that sends messages that simulate the behavior of one or more data sources.

Cloud 52

Cloud Development Analytics Azure 52

ScaleOut Software

AUGUST 20, 2020

They make use of standard object-oriented concepts and languages (such as C#, Java, and JavaScript). The mock development environment is shown below: Once a model has been created, it can be tested using a client test program that sends messages that simulate the behavior of one or more data sources.

Cloud 52

Cloud Development Analytics Azure 52

Tasktop

FEBRUARY 1, 2021

Humans are biologically programmed to mistrust anything that deviates from the status quo. A Value Stream Architecture (VSA) diagram can provide that visual cue: A Value Stream Architecture exercise maps the flow of value-creating and -protecting software delivery work across your toolchain that underpins your product value stream.

Logistics 52

Logistics Metrics Architecture Software 52

John McCalpin

JANUARY 22, 2018

The exercise seemed simple enough — just fix one item in the Colfax code and we should be finished. An illustrative example: The IBM POWER4 has 72 floating-point rename registers and two floating-point arithmetic units capable of executing fused multiply-add (FMA) instructions (a = b+c*d). Instead, we found puzzle after puzzle.

Latency 40

Latency Hardware Code Testing 40

John McCalpin

JANUARY 22, 2018

There was no deep goal — just a desire to see the maximum GFLOPS in action. The exercise seemed simple enough — just fix one item in the Colfax code and we should be finished. After this, the micro-ops will wait in the Reorder Buffer until they can be retired in program order. Instead, we found puzzle after puzzle.

Latency 40

Latency Hardware Code Testing 40