C/C++ references used as function parameters, properties, temporary variables, reference parameters and const

8.2.2 Using references as function parameters References are often used as function parameters, making the variable name in the function an alias for the variable in the calling program (that is, the formal parameters and actual parameters of the function are the same thing). This way of passing parameters is called passing by reference. Passing […]

Conditional race coverage for temporary intermediate states of objects

Conditional Competition at Portswigger Training Ground Conditional competition for temporary intermediate states of objects Lab: Partial construction race conditions Necessary knowledge points before experiment Some frameworks try to prevent accidental data corruption by using some form of request locking. For example, PHP’s native session handler module handles only one request per session at a time. […]

5 Pytorch parallel training methods that contemporary graduate students should master (single machine with multiple cards)

Click “Xiaobai Xue Vision” above and choose to add “Star” or “Pin“ Heavy stuff, delivered as soon as possible Author丨Zongheng@zhihu Source丨https://zhuanlan.zhihu.com/p/98535650 Introduction Using PyTorch, the author has written examples of single-machine multi-card usage of different acceleration libraries on ImageNet for the convenience of readers. It’s Friday again, a good day for paddling. The machine is […]

13.107. The most comprehensive summary of Hive optimization solutions: scope of temporary parameters, splitting large files, merging small files, setting the memory size of Map and Reduce, setting the heap size settings of Map and Reduce, etc.

13.107. The most comprehensive summary of Hive optimization solutions: 1.1.8. Scope of temporary parameters: 1.1.10. Split large files 1.1.11. Merge small files 1.1.12.Set the memory size of Map and Reduce 1.1.13. Set the heap size settings for Map and Reduce 1.1.14. Turn on the Combiner function: pre-aggregate on the map side 1.1.15. Topology map, optimized […]

jwt and redis, put the generated token into redis for temporary storage

jwt and redis, put the generated token into redis for temporary storage Introduction: This article explains how to combine jwt and redis. We store the token generated by jwt in redis. For a tutorial on springboot + jwt, you can read this article: vue and jwt verification SpringBoot + JWT + Shiro SpringBoot connects to […]

[ES6 02] let command code block is valid, there is no variable promotion, temporary dead zone TDZ, repeated declarations are not allowed, block-level scope, variable coverage, variable leakage, function declaration, const command, essence, top-level object attribute, global variable glabalThis

let and const let command 1 Basic usage 2 There is no variable promotion 3 Temporary dead zone 4 Duplicate declarations are not allowed block scope Block-level scope and function declaration const command The nature of const Top-level object properties globalThis object let command 1 Basic usage ES6 has a new function for declaring variables […]

Oracle knowledge articles + session-level global temporary table performance in different connection modes

Tags: session-level temporary table, global temporary table, phantom read Interpretation: Oracle global temporary table is also called GTT Conclusion ? Dedicated server mode: Different application sessions can only access their own data ? Shared server mode: Different application sessions can only access their own data ? Database resident connection pool mode: different application sessions may […]

[Git] Git concept & installation & workspace-temporary storage area-repository

Article directory Git concept – version controller Git installation Centos platform & ubuntu Git basic operation Create a Git local warehouse Configure Git Know the operating area, temporary storage area, and version library add files View the .git file Summarize Add file scene 2 Git concept – version controller introduce When we write various files, […]