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ALTER DATABASE failed because a lock could not be placed on database
...DATABASE TESTING123
GO
USE TESTING123;
SELECT NEWID() AS X INTO FOO
FROM sys.objects s1,sys.objects s2,sys.objects s3,sys.objects s4 ,sys.objects s5 ,sys.objects s6
Connections 2 and 3
set lock_timeout 5;
ALTER DATABASE TESTING123 SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
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Signed to unsigned conversion in C - is it always safe?
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Short Answer
Your i will be converted to an unsigned integer by adding UINT_MAX + 1, then the addition will be carried out with the unsigned values, resulting in a large result (depending on the values of u and i).
Long Answer
According to the C99 Sta...
How to convert int to char with leading zeros?
I need to convert int datafield to nvarchar with leading zeros
17 Answers
17
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How to read environment variables in Scala
In Java, reading environment variables is done with System.getenv() .
6 Answers
6
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Convert Int to String in Swift
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Converting Int to String:
let x : Int = 42
var myString = String(x)
And the other way around - converting String to Int:
let myString : String = "42"
let x: Int? = myString.toInt()
if (x != nil) {
// Successfully con...
What do linkers do?
I've always wondered. I know that compilers convert the code you write into binaries but what do linkers do? They've always been a mystery to me.
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Converting stream of int's to char's in java
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If you're trying to convert a stream into text, you need to be aware of which encoding you want to use. You can then either pass an array of bytes into the String constructor and provide a Charset, or use InputStreamReader with the appropriate C...
Multiprocessing vs Threading Python [duplicate]
...ng over threading . I know that multiprocessing gets around the Global Interpreter Lock, but what other advantages are there, and can threading not do the same thing?
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Convert integer to hexadecimal and back again
How can I convert the following?
10 Answers
10
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How to run a python script from IDLE interactive shell?
...normally cannot be called with arguments. But here's a workaround:
import sys
sys.argv = ['helloworld.py', 'arg'] # argv[0] should still be the script name
execfile('helloworld.py')
Deprecated since 2.6: popen
import os
os.popen('python helloworld.py') # Just run the program
os.popen('python ...