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MySQL: Transactions vs Locking Tables
... $50 you should have ended up with ($100 - $20 - $30). In this case, "bank error in your favor".
Now, let's say you use locks. Your bill payment ($20) hits the pipe first, so it wins and locks your account record. Now you've got exclusive use, and can deduct the $20 from the balance, and write the ...
What is the difference between String.Empty and “” (empty string)?
... C# 4.0 or higher
void SomeMethod(int ID, string value = string.Empty)
// Error: Default parameter value for 'value' must be a compile-time constant
{
//... implementation
}
Case expression in switch statement
string str = "";
switch(str)
{
case string.Empty: // Error: A constant value i...
“The breakpoint will not currently be hit. The source code is different from the original version.”
...te project. After cleaning up these temp folders I got the proper compiler errors back:
C:\Documents and Settings\%username%\AppData\Local\Temp\Temporary
ASP.NET Files
C:\windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET
Files
I finally resolved the problem when I discovered that a cl...
Compile (but do not run) a Python script [duplicate]
...hon script without running it? I just want to check the script for syntax errors. I was hoping for a simple command line switch, but I didn't see anything in python --help . I'd like an answer for both Python 2 and Python 3.
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node.js equivalent of python's if __name__ == '__main__' [duplicate]
...();
}
EDIT: If you use this code in a browser, you will get a "Reference error" since "require" is not defined. To prevent this, use:
if (typeof require !== 'undefined' && require.main === module) {
fnName();
}
...
No suitable application records were found
I created an App Store archive file. During validation it raises an error with the following message
4 Answers
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Correct use of transactions in SQL Server
...ON to instruct Sql Server to automatically rollback transaction in case of error. If ommited or set to OFF one needs to test @@ERROR after each statement or use TRY ... CATCH rollback block.
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Why are my balls disappearing? [closed]
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Your error comes from this line initially:
var direction1 = Math.atan2(ball1.velocitY, ball1.velocityX);
You have ball1.velocitY (which is undefined) instead of ball1.velocityY. So Math.atan2 is giving you NaN, and that NaN val...
Rename a table in MySQL
...and not the single quote ' I did the single quote from habit, and got the error, but maybe this will save someone else 10 seconds
– Paul
Feb 3 '14 at 18:05
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How do I turn off the output from tar commands on Unix? [closed]
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And will it show errors even in non-verbose mode?
– Phil Filippak
Feb 13 '16 at 6:47
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