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split string only on first instance - java
I want to split a string by '=' charecter. But I want it to split on first instance only. How can I do that ? Here is a JavaScript example for '_' char but it doesn't work for me
split string only on first instance of specified character
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Should a retrieval method return 'null' or throw an exception when it can't produce the return value
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Only throw an exception if it is truly an error. If it is expected behavior for the object to not exist, return the null.
Otherwise it is a matter of preference.
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Converting NSString to NSDate (and back again)
...r *detector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingAllTypes error:nil];
[detector enumerateMatchesInString:dateString
options:kNilOptions
range:NSMakeRange(0, [dateString length])
usingBlock:^(NSTextChecki...
How to move all files including hidden files into parent directory via *
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I get the following error: mv: overwrite `/path/.'? y mv: cannot move `/path/subfolder/.' to `/path/.': Device or resource busy mv: overwrite `/path/..'? y mv: cannot move `/path/subfolder/..' to `/path/..': Device or resource busy
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Finding duplicate rows in SQL Server
I have a SQL Server database of organizations, and there are many duplicate rows. I want to run a select statement to grab all of these and the amount of dupes, but also return the ids that are associated with each organization.
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How to remove the last character from a string?
I want to remove the last character from a string. I've tried doing this:
32 Answers
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What is the difference between Trap and Interrupt?
...n the ALU finds this problem. Just like a segmentation fault. Not all math errors cause interrupts (overflow doesn't), though.
– Aaron Digulla
May 22 '12 at 8:13
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must appear in the GROUP BY clause or be used in an aggregate function
...pain is 5 and for canada the best result is 2. It is true, and there is no error.
If we need to display wmname also, we have to answer the question: "What is the RULE to choose wmname from resulting set?" Let's change the input data a bit to clarify the mistake:
cname | wmname | avg ...
Creating and playing a sound in swift
...w: SKView) {
audioPlayer = AVAudioPlayer(contentsOfURL: coinSound, error: nil)
audioPlayer.prepareToPlay()
}
// Trigger the sound effect when the player grabs the coin
func didBeginContact(contact: SKPhysicsContact!) {
audioPlayer.play()
}
}
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Insert, on duplicate update in PostgreSQL?
...ubject to race conditions that mean it might still fail with duplicate key error if a row is inserted concurrently, or might terminate with no row inserted when a row is deleted concurrently. A SERIALIZABLE transaction on PostgreSQL 9.1 or higher will handle it reliably at the cost of a very high se...