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Right Answer:
The ARM Compiler is a software development tool used to compile code for ARM architecture processors. It translates high-level programming languages like C and C++ into machine code that can be executed by ARM-based devices, optimizing performance and efficiency for embedded systems and applications.

Right Answer:
In ARM Compiler, you use preprocessor directives by starting a line with a `#` symbol. Common directives include `#define` to create macros, `#include` to include header files, and `#ifdef`/`#ifndef` for conditional compilation. For example:

```c
#define MAX_SIZE 100

#include "myheader.h"

#ifdef DEBUG
// Debugging code here
#endif
```

Right Answer:
Design patterns are reusable solutions to common problems that occur in software design. They provide a standard way to solve specific design issues, making code more understandable, maintainable, and scalable. They are important because they promote best practices, improve code quality, and facilitate communication among developers by providing a common vocabulary.

Right Answer:
I use the following debugging tools and techniques when troubleshooting issues in AEM:

1. **Sling Logging**: Adjust log levels and check logs in the Felix console for errors.
2. **AEM Error Logs**: Review error logs located in the `crx-quickstart/logs` directory.
3. **Sling Resource Resolver**: Use the resource resolver to inspect resource paths and properties.
4. **AEM Web Console**: Utilize the Web Console for OSGi services and configurations.
5. **Browser Developer Tools**: Inspect network requests and console errors in the browser.
6. **Debugging with Eclipse**: Set breakpoints and debug AEM code using an IDE like Eclipse.
7. **AEM Package Manager**: Check for package installation issues or conflicts.
8. **Replication Queue**: Monitor the replication queue for issues with content publishing.

Right Answer:
The ARM Compiler is specifically optimized for ARM architecture, providing better performance and code size for ARM-based applications, while GCC and Clang are general-purpose compilers that support multiple architectures. Additionally, the ARM Compiler includes proprietary features and optimizations tailored for ARM processors that may not be available in GCC or Clang.

Right Answer:
In the .NET context, "managed" refers to code that is executed by the Common Language Runtime (CLR), which provides services like memory management, garbage collection, and type safety, ensuring that the code runs in a controlled environment.

Right Answer:
`$?` returns the exit status of the last executed command. A value of `0` indicates success, while any non-zero value indicates an error.

Right Answer:
To create a custom SQL query in Django, you can use the `raw()` method of a model's manager. Here’s an example:

```python
from your_app.models import YourModel

# Custom SQL query
query = "SELECT * FROM your_app_yourmodel WHERE some_field = %s"
results = YourModel.objects.raw(query, [value])
```

You can also use the `connection` object for executing raw SQL:

```python
from django.db import connection

with connection.cursor() as cursor:
cursor.execute("SELECT * FROM your_app_yourmodel WHERE some_field = %s", [value])
results = cursor.fetchall()
```

Right Answer:
To create views in Django, follow these steps:

1. Open your `views.py` file in your Django app.
2. Import necessary modules:
```python
from django.shortcuts import render
```
3. Define a view function:
```python
def my_view(request):
return render(request, 'template_name.html', context)
```
4. Map the view to a URL in your `urls.py`:
```python
from django.urls import path
from .views import my_view

urlpatterns = [
path('my-url/', my_view, name='my_view_name'),
]
```