大约有 16,000 项符合查询结果（耗时：0.0321秒） [XML]
Do I really have a car in my garage? [duplicate]
...
Let's say Vehicle is like:
public abstract class Vehicle {
protected int price;
public getPrice() { return price; }
public abstract int getPriceAfterYears(int years);
}
Every Vehicle has a price so it can be put inside the Vehicle abstract class.
Yet, the formula determining the price...
How to Create a circular progressbar in Android which rotates on it?
...olutions.
Short answer:
Instead of creating a layer-list, I separated it into two files. One for ProgressBar and one for its background.
This is the ProgressDrawable file (@drawable folder): circular_progress_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://s...
How to get started with developing Internet Explorer extensions?
...
[UPDATE] I'm updating this answer to work with Internet Explorer 11, in Windows 10 x64 with Visual Studio 2017 Community.
The previous version of this answer (for Internet Explorer 8, in Windows 7 x64 and Visual Studio 2010) is at the bottom of this answer.
Creating a Wo...
Sort array of objects by single key with date value
...current updated_at in ISO format. We use new Data(iso_string).getTime() to convert ISO time to Unix timestamp. A Unix timestamp is a number that we can do simple math on. We subtract the first and second timestamp the result is; if the first timestamp is bigger than the second the return number will...
PHP's array_map including keys
...er call to array_map therefore produces an array of arrays. This then gets converted back to a single-dimension array by array_column.
Usage
$ordinals = [
'first' => '1st',
'second' => '2nd',
'third' => '3rd',
];
$func = function ($k, $v) {
return ['new ' . $k, 'new ' . $v]...
How to Create Deterministic Guids
...
This will convert any string into a Guid without having to import an outside assembly.
public static Guid ToGuid(string src)
{
byte[] stringbytes = Encoding.UTF8.GetBytes(src);
byte[] hashedBytes = new System.Security.Cryptogr...
Go Unpacking Array As Arguments
...arg syntax similar to C:
package main
import "fmt"
func my_func( args ...int) int {
sum := 0
for _,v := range args {
sum = sum + v
}
return sum;
}
func main() {
arr := []int{2,4}
sum := my_func(arr...)
fmt.Println("Sum is ", sum)
}
Now you can sum as many things a...
How do you create a static class in C++?
.... Like so:
BitParser.h
class BitParser
{
public:
static bool getBitAt(int buffer, int bitIndex);
// ...lots of great stuff
private:
// Disallow creating an instance of this object
BitParser() {}
};
BitParser.cpp
bool BitParser::getBitAt(int buffer, int bitIndex)
{
bool isBitSet = ...
Can you do greater than comparison on a date in a Rails 3 search?
... > ?", p[:date]).
order('date ASC, created_at ASC')
or you can also convert everything into the SQL notation
Note.
where("user_id = ? AND notetype = ? AND date > ?", current_user.id, p[:note_type], p[:date]).
order('date ASC, created_at ASC')
...
Should arrays be used in C++?
...y to have a lot of very
small arrays. Say something like an n-dimension point:
template <typename T, int dims>
class Point
{
T myData[dims];
// ...
};
Typically, one might imagine a that dims will be very small (2 or 3),
T a built-in type (double), and that you might end up with
std::v...