C++20 ❤ SQL John R Bandela, MDOverview u SQL u C++ Example u Implementation techniques u fixed_string u meta_struct u Parsing compile time strings into meta_structsOverview v SQL v C++ Example {price_from_user};Avoiding SQL Injection Attacks SELECT orders.id, name, item, price, discount_code FROM orders JOIN customers ON customers.id = customerid WHERE price > ?;SQL Library Options u Traditional Lots of information available u Vulnerable to sql injection of developer not careful u Use dynamic typingDomain Specific Language u Use types to encode SQL u Looks more like regular C++ u Typically requires

PCB Editor The KiCad Team . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table of Contents Introduction to the KiCad PCB Editor Initial configuration The PCB Editor user interface Navigating the editing canvas Hotkeys Display and selection variables Custom design rules Scripting Working With IDF Component Outlines Actions reference PCB Editor 3D Viewer Common 64 67 68 69 70 71 73 73 75 76 76 81 82 98 100 109 109 120 122

PCB Editor The KiCad Team . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customization Custom design rules Scripting Working With IDF Component Outlines Actions reference PCB Editor 3D Viewer Common 52 55 56 57 58 59 61 61 63 64 64 69 81 82 92 92 102 104 1 not have hotkeys assigned by default, but hotkeys can be assigned or redefined using the hotkey editor (Preferences → Preferences… → Hotkeys). NOTE Many of the actions available through hotkeys are

degree. Pcbnew includes a Footprint Editor that allows editing of individual footprints that have been on a pcb or editing a footprint in a library. The Footprint Editor provides many time saving tools such interative push and shove router, differential and meander trace routing and tuning, a reworked Footprint Editor, and many other features. Please note that most of these new features only exist in the new OpenGL saved a footprint to the COW library’s local directory by doing a footprint save in the Footprint Editor, no GitHub updates will be seen when loading a footprint with the same name as one for which you’ve

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Pcbnew vii 8.3.2 Netclass editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.3 Footprint Editor - Managing Libraries 112 12.1 Overview of Footprint Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 12.2 Accessing Footprint Editor . . . . . . . . 113 12.3 Footprint Editor user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 12.4 Top toolbar in Footprint Editor . . . . . . . . . . . . . .

degree. Pcbnew includes a Footprint Editor that allows editing of individual footprints that have been on a pcb or editing a footprint in a library. The Footprint Editor provides many time saving tools such interative push and shove router, differential and meander trace routing and tuning, a reworked Footprint Editor, and many other features. Please note that most of these new features only exist in the new OpenGL "Up" and "Down" buttons in the dialog above or give the footprint a unique name using the footprint editor. 2.4. Managing Footprint Libraries: .pretty repositories As of release 4.0, Pcbnew uses the new

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 8.3.2 Netclass editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Footprint Editor - Managing Libraries 104 12.1 Overview of Footprint Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 12.2 Accessing Footprint Editor . . . . 105 12.3 Footprint Editor user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 12.4 Top toolbar in Footprint Editor . . . . . . . . . . . .

Pl_Editor Pl_Editor ii October 31, 2021 Pl_Editor iii Contents 1 Introduction to Pl_Editor 2 2 Pl_Editor files 2 2.1 Input file and default title block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 Invoking Pl_Editor 14 7 Pl_Editor Commands 14 7.1 Main Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Left window 17 Pl_Editor iv 9 Right window 18 10 Interactive edition 20 10.1 Item selection . . . . . . . . . . . . .