Back to Basics Lambda Expressions Barbara Geller & Ansel Sermersheim CppCon September 2020Introduction ● Prologue ● History ● Function Pointer ● Function Object ● Definition of a Lambda Expression slot library ○ CsLibGuarded ■ library for managing access to data shared between threadsLambda Expressions ● History ○ lambda calculus is a branch of mathematics ■ introduced in the 1930’s to prove memory ■ languages which were influenced by lambda calculus ● Haskell, LISP, and ML 5Lambda Expressions ● History ○ why do we use the terminology lambda expression ■ greek letter λ refers to an anonymous

Continue to use ClickHouse as TSDB 邰翀 青云QingCloud 数据库研发工程师 ► Look back: Why we choose it ► Now: How we do ► Future: What we do Content Why we choose it Why we choose it Why we choose it

Firebird Internals Inside a Firebird Database Norman Dunbar Version 1.2, 13 August 2021 Table of Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contents 1 Chapter 1. Introduction The purpose of this document is to try to explain what goes on inside a Firebird database. Much of the information in this manual has been extracted from the Firebird everyone who has contributed to the manual. Chapter 1. Introduction 2 Chapter 2. Database Structure When you create a new database, be it single or multiple file, a number of things happen: • The database

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When Nanoseconds Matter: Ultrafast Trading Systems in C++ CppCon 2024 Thursday, 19 September 2024 David Gross Introduction 2 • About me - Leading the Options Automated Trading else { levels.insert(it, {price, volume}); } }I-Cache misses – Immediately Invoked Function Expressions (IIFE) 59 template void DeleteOrder(T& levels, Price price, Volume volume if (it->second <= 0) { levels.erase(it); } } I-Cache misses – Immediately Invoked Function Expressions (IIFE)61 template void DeleteOrder(T& levels, Price price, Volume volume

Building resilient systems inside the mesh: abstraction and automation of Virtual Service generation Vladimir Georgiev, Thought Machine #IstioCon Sync calls failures inside the mesh ● Everyone says SLOs. ● Potential typing errors when dealing with YAMLs. ● Potential drift between the state of the service API and the Virtual Service config. ● Hard to manage when having hundreds of services. #IstioCon

Firebird Generator Guide A guide on how and when to use generators in Firebird Frank Ingermann Version 0.3, 27 June 2020 Table of Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . Basics 2.1. What is a generator? Think of a generator as a “thread-safe” integer counter that lives inside a Firebird database. You can create one by giving it a name: CREATE GENERATOR GenTest; Then you easy to “predictably” set it directly to a certain value and then obtain that same value — it’s inside the database, but outside of transaction control. 2.2. What is a sequence? “Sequence” is the official

When Knowledge Graph meet Python Yongpan Sheng 目录 CONTENTS The Pipeline of Knowledge Graph Construction by Data- driven manner Python Tools for Graph Data Management Domain-specific Knowledge previous subtask are more likely to be salient, which of their entities and concepts to merge and, when merging, which of the available labels to leverage in the final conceptual graph . A Conceptual Knowledge

How and When You Should Measure CPU Overhead of eBPF Programs Bryce Kahle, Datadog October 28, 2020 Why should I profile eBPF programs? CI variance tracking Tools kernel.bpf_stats_enabled kernel