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How to avoid java.util.ConcurrentModificationException when iterating through and removing elements
...oop in the normal way, the java.util.ConcurrentModificationException is an error related to the elements that are accessed.
So try:
for(int i = 0; i < list.size(); i++){
lista.get(i).action();
}
share
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How can I check for an empty/undefined/null string in JavaScript?
...ant value and the variable. This way when you test your code you'll see an error (Invalid lef-hand side in assignment). You can also use something like JSHint to disallow assignment in conditions and be warned when you write one.
– florian
Sep 23 '13 at 9:58
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How to rollback a specific migration?
... (This corrected command was added AFTER all the comments pointing out the error in the original post)
rake db:migrate VERSION=20100905201547
In order to rollback ONLY ONE specific migration (OUT OF ORDER) use:
rake db:migrate:down VERSION=20100905201547
Note that this will NOT rollback any in...
What does mvn install in maven exactly do
...endencies will have to be resolved for the project to be built without any errors, and mvn install is one utility that could download most of the dependencies.
Further, there are other utils within Maven like dependency:resolve which can be used separately in any specific cases. The build life cycl...
MySQL - UPDATE multiple rows with different values in one query
... Excuse my english sir, when i try to make an update mysql give me the error: # 1062 - Duplicate entry 'XXX' for key 'PRIMARY'. That does when I try to update a record with the same value it already had, is there any way to skip the update if the current value is the same as being updated?
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Better way to cast object to int
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I did find a point that wasn't really an error but perhaps simplified things too much so someone might think that. I've removed that sentence and added a link to authoritative documentation.
– Joel Coehoorn
Apr 13 '09 at 20:28...
Remove not alphanumeric characters from string
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@AD7six thank you for pointing out my error. When I copy pasted the input into WebStrom it automatically added 2 extra backslashes to each existing backslash. I failed to noitice this. input = "\\test\red\bob\fred\new" --> copy_paste = "\\\\test\\red\\bob\...
Why do we declare Loggers static final?
... @Dima: Well I'm still grateful that the compiler will still throw an error if I do accidentally try to change the value in these cases...
– Jon Skeet
Oct 26 '15 at 19:44
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Reactjs convert html string to jsx
... helpful. Also I tried out with few lines of html and I had a page full of error messages. Do someone have examples or any resources with documentation?
– Tarun Kolla
Jul 31 '19 at 14:49
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SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
...ECT" version of the query works, but the UPDTATE statement throws a syntax error at "FROM"
– 2NinerRomeo
Mar 4 '15 at 19:44
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