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In a Bash script, how can I exit the entire script if a certain condition occurs?
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Try this statement:
exit 1
Replace 1 with appropriate error codes. See also Exit Codes With Special Meanings.
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Delete all Duplicate Rows except for One in MySQL? [duplicate]
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Excellent solution. It worked perfectly. But I have one suggestion here we should swap the conditions. Instead of [WHERE n1.id > n2.id AND n1.name = n2.name] we should write [WHERE n1.name = n2.name AND n1.id > n2.id] it...
“X does not name a type” error in C++
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When the compiler compiles the class User and gets to the MyMessageBox line, MyMessageBox has not yet been defined. The compiler has no idea MyMessageBox exists, so cannot understand the meaning of your class member.
You need to make sure MyMessageBox is defined before you use it as a member....
What is the point of noreturn?
[dcl.attr.noreturn] provides the following example:
5 Answers
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How to remove a single, specific object from a ConcurrentBag?
... own queue becomes empty. If you remove an item and put it back then the next item you remove may be the same item again. There is no guarantee that repeatedly removing items and putting them back will allow you to iterate over the all the items.
Two alternatives for you:
Remove all items and rem...
What is the best way to compute trending topics or tags?
...ites offer some statistics like "The hottest topics in the last 24h". For example, Topix.com shows this in its section "News Trends". There, you can see the topics which have the fastest growing number of mentions.
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CALayer with transparent hole in it
...or;
fillLayer.opacity = 0.5;
[view.layer addSublayer:fillLayer];
Swift 3.x:
let radius = myRect.size.width
let path = UIBezierPath(roundedRect: CGRect(x: 0, y: 0, width: self.mapView.bounds.size.width, height: self.mapView.bounds.size.height), cornerRadius: 0)
let circlePath = UIBezierPath(round...
Test a weekly cron job [closed]
..., run the following as root:
run-parts -v /etc/cron.weekly
... or the next one if you receive the "Not a directory: -v" error:
run-parts /etc/cron.weekly -v
Option -v prints the script names before they are run.
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Is there a better way to express nested namespaces in C++ within the header
...back to C++ and tried to use namespaces the same way but the required syntax is horrible within the header file.
11 Answers...
How do you round UP a number in Python?
...t that many functions ask questions about the type of some parameters and execute different code depending on the answer.
– quamrana
Dec 17 '17 at 12:27
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