C++ Features Article directory C++ features 1. Write in front 2. Namespace 2.1 Nesting of namespaces 2.2 Full expansion of namespace 2.3 Specified expansion of namespace 3. C++ I/O streams 4. Default parameters 4.1 Notes on using default parameters 1. Write in front It can be considered that The syntax and semantics of C++ basically […]
Tag: spaces
Directory Enlightenment: Access to namespaces and their members in PHP
Article directory refer to environment Use of namespaces global namespace members Subnamespace members namespace keyword Two major functions of namespace Use namespace\ to access elements under the current namespace Prepare for a rainy day The first affectionate Breakout upward undefined constant under (fully) qualified name PHP8 or below PHP8 and above Undefined constant under (fully) […]
Once and for all! ! Use interceptors to globally implement Mybatisplus to remove string spaces
For the data information submitted by the front-end page, the background program must remove the spaces before and after the string, that is, TRIM, which is required by most enterprise applications. Change one by one? Too much trouble! When users enter conditions to query data on a web page, they must also remove spaces, otherwise […]
Nostalgic images and numerical fitting of RGB and HSI color spaces
Written earlier, this is a summary of the explanations about the numerical “XX” course assignments of the “X” course in optics at “XX” University. Jiang Yue looks the same every year, and so does the assignment. I can’t go home during the Mid-Autumn Festival and National Day and have nothing to do, so I decided […]
Python namespaces and scopes
The so-called scope refers to the scope within which the variable name/object name is visible/valid. A variable name cannot have a scope that is too large, which will cause widespread naming conflicts, nor is it too small, which will make it difficult to implement the variable’s scope. Shared, so there are generally multiple levels of […]
Namespaces, function objects, and closures
1. Namespace 1. What is a namespace The namespace is where the mapping/binding relationship between names and objects is stored. For x=3, Python will apply for memory space to store object 3, and then store the binding relationship between the names x and 3 in the name space. del x means clearing the binding relationship. […]
Python namespaces and closures
Namespace # What is a namespace? It is the place where the relationship between variable names and variable values is stored. # Classification of namespaces 1. Built-in namespace ‘Built-in’: It exists in the Python interpreter itself and can be used directly. len 2. Global namespace In the py file, the variable names written in the […]
C++ namespaces & templates
Namespace In order to distinguish functions, classes, variables, etc. with the same name in different libraries, the concept: namespace is introduced. It serves as additional information to help differentiate between them. Using a namespace defines a context, which essentially defines a scope. Define namespace A namespace is defined using the keyword namespace, followed by the […]
Alien invasion armed spaceship (3)
Directory Table of contents Preface mind Mapping Project article list 1. Refactoring: module game_functions 2. Create the game_functions.py file 2.1, Import module 2.2. Transfer the exit game event 2.3, Modify alien_invasion.py file 2.3.1, Import module 2.3.2, Call function 2.4, Create the function update_screen() in the game_functions.py file 2.4.1, Create update_screen() function 2.4.2. Transfer game background, […]
Snapdragon Spaces Development Guide (9)
Snapdragon Spaces Development Guide (9) 5.6.3 Hit Test Example 5.6.3.1 How the example works 5.6.4 Image tracking example 5.6.4.1 How the example works 5.6.4.2 Exchanging reference libraries at runtime 5.6.5 Plane detection example 5.6.5.1 How the example works 5.6.5.2 Function settings 5.6.6 Camera frame access example 5.6.6.1 How the example works 5.6.6.1 Retrieve CPU image […]