大约有 40,000 项符合查询结果(耗时:0.0454秒) [XML]
What's the difference between using INDEX vs KEY in MySQL?
...e and this was the first result. In my opinion there is no need to open an extra question. But feel free to do so if you want to.
– Stefan
Mar 25 at 16:00
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How to use a class from one C# project with another C# project
...------
namespace DoubleProjectTwo
{
class ClassB
{
public string textB = "I am in Class B Project Two";
ClassA classA = new ClassA();
public void read()
{
textB = classA.read();
}
}
}
Step5:
Make something show me proof of
re...
How to rename a file using Python
... as well:
ext = p.suffix
We can perform our modification with a simple string manipulation:
Python 3.6 and greater make use of f-strings!
new_file_name = f"{name_without_extension}_1"
Otherwise:
new_file_name = "{}_{}".format(name_without_extension, 1)
And now we can perform our rename by...
Getting the class name of an instance?
...
Do you want the name of the class as a string?
instance.__class__.__name__
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How to print struct variables in console?
...nique:
type Response2 struct {
Page int `json:"page"`
Fruits []string `json:"fruits"`
}
res2D := &Response2{
Page: 1,
Fruits: []string{"apple", "peach", "pear"}}
res2B, _ := json.Marshal(res2D)
fmt.Println(string(res2B))
That would print:
{"page":1,"fruits":["apple","pe...
How to step through Python code to help debug issues?
...;> import pdb
>>> pdb.run('pdb_script.MyObj(5).go()')
> <string>(1)<module>()
(Pdb)
C. From Within Your Program
For a big project and long-running module, can start the debugging from inside the program using
import pdb and set_trace()
like this :
#!/usr/bin/env pytho...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
...taking user input and escaping any single quotes and surrounding the whole string with single quotes. Here's the code:
18 A...
Flat file databases [closed]
... * Directory to store data.
*
* @since 1.0
*
* @var string
*/
protected $directory;
/**
* Constructor, duh.
*
* @since 1.0
* @uses $directory Holds the data directory, which the constructor sets.
*
* @param string $directory
*/...
Creating a ZIP Archive in Memory Using System.IO.Compression
...
Just another version of zipping without writing any file.
string fileName = "export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xlsx";
byte[] fileBytes = here is your file in bytes
byte[] compressedBytes;
string fileNameZip = "Export_" + DateTime.Now.ToString("yyyyMMddhhmmss") +...
How to extract a substring using regex
I have a string that has two single quotes in it, the ' character. In between the single quotes is the data I want.
13 An...
