大约有 16,000 项符合查询结果（耗时：0.0244秒） [XML]
How to delete an element from an array in C#
...
You can also convert your array to a list and call remove on the list. You can then convert back to your array.
int[] numbers = {1, 3, 4, 9, 2};
var numbersList = numbers.ToList();
numbersList.Remove(4);
...
How do I convert an integer to string as part of a PostgreSQL query?
How do I convert an integer to string as part of a PostgreSQL query?
3 Answers
3
...
How do I get a human-readable file size in bytes abbreviation using .NET?
...return "0" + suf[0];
long bytes = Math.Abs(byteCount);
int place = Convert.ToInt32(Math.Floor(Math.Log(bytes, 1024)));
double num = Math.Round(bytes / Math.Pow(1024, place), 1);
return (Math.Sign(byteCount) * num).ToString() + suf[place];
}
Also in c#, but should be a snap to conve...
Query to list all stored procedures
... to use information_schema. As long as you're not in the master database, system stored procedures won't be returned.
SELECT *
FROM DatabaseName.INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE = 'PROCEDURE'
If for some reason you had non-system stored procedures in the master database, you co...
PATH issue with pytest 'ImportError: No module named YadaYadaYada'
...s:
Add the path manually to the test files, something like this:
import sys, os
myPath = os.path.dirname(os.path.abspath(__file__))
sys.path.insert(0, myPath + '/../')
Run the tests with the env var PYTHONPATH=../.
shar...
Get type of all variables
... #a function is function
class(charToRaw("hi")) #convert string to raw: raw
class(array("hi")) #array of items is: array
#So far so good, but those who wish to keep their sanity go no further
class(5 + 5L) #double + intege...
How to convert an object to a byte array in C#
...
To convert an object to a byte array:
// Convert an object to a byte array
public static byte[] ObjectToByteArray(Object obj)
{
BinaryFormatter bf = new BinaryFormatter();
using (var ms = new MemoryStream())
{
...
delegate keyword vs. lambda notation
...
Even longer answer - there are fiddly reasons why they're convertible to different delegate types, too :)
– Jon Skeet
Nov 18 '08 at 19:33
...
T-SQL Cast versus Convert
What is the general guidance on when you should use CAST versus CONVERT ? Is there any performance issues related to choosing one versus the other? Is one closer to ANSI-SQL?
...
Returning null as an int permitted with ternary operator but not if statement
...terprets true ? null : 0 as an Integer expression, which can be implicitly converted to int, possibly giving NullPointerException.
For the second case, the expression null is of the special null type see, so the code return null makes type mismatch.
...