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What is the difference between user and kernel modes in operating systems?
...inology).
Entered with the svc instruction (SuperVisor Call), previously known as swi before unified assembly, which is the instruction used to make Linux system calls. Hello world ARMv8 example:
hello.S
.text
.global _start
_start:
/* write */
mov x0, 1
ldr x1, =msg
ldr x2, =len
...
Parsing HTML using Python
...
Just an update: as of BeautifulSoup 4, the import line is now from bs4 import BeautifulSoup
– Bailey Parker
Mar 3 '14 at 6:25
2
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What are the basic rules and idioms for operator overloading?
...erator
The function call operator, used to create function objects, also known as functors, must be defined as a member function, so it always has the implicit this argument of member functions. Other than this, it can be overloaded to take any number of additional arguments, including zero.
Here'...
Difference between DTO, VO, POJO, JavaBeans?
...inition of Data Transfer Object:
Data transfer object (DTO), formerly known as value objects or VO, is a design pattern used to transfer data between software application subsystems. DTOs are often used in conjunction with data access objects to retrieve data from a database.
The difference...
How to add texture to fill colors in ggplot2
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Now I just need to find out how to alter their transparency in R.. haha
– Nova
Jul 11 '19 at 18:07
a...
How to find the duration of difference between two dates in java?
....com/javase/tutorial/datetime/iso/period.html
LocalDate today = LocalDate.now();
LocalDate birthday = LocalDate.of(1960, Month.JANUARY, 1);
Period p = Period.between(birthday, today);
long p2 = ChronoUnit.DAYS.between(birthday, today);
System.out.println("You are " + p.getYears() + " years, " + p...
TimePicker Dialog from clicking EditText
...d think I might of tried that before because I got this message before. Is now showing an error everything after 'new TimePickerDialog' and before 'mTimePicker.setTitle'. The error is 'Cannot resolve constructor 'TimePickerDialog(com.appname.classname, android.app.TimePickerDialog.OnTimeSetListener,...
When to use static vs instantiated classes
...imic the JavaScript prototype object in PHP 5.3) static members is when I know that the respective field will have the same value cross-instance. At that point you can use a static property and maybe a pair of static getter/setter methods. Anyway, don't forget to add possibility for overriding the s...
How do I create a variable number of variables?
... # prints bar, because indices start at 0
lst.append('potatoes') # lst is now ['foo', 'bar', 'baz', 'potatoes']
For ordered sequences, lists are more convenient than dicts with integer keys, because lists support iteration in index order, slicing, append, and other operations that would require a...
Image comparison - fast algorithm
... in computer vision, keypoint matching. This may require some background knowledge to implement, and can be slow.
The second method uses only elementary image processing, and is potentially faster than the first approach, and is straightforward to implement. However, what it gains in understandabi...