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Android - how do I investigate an ANR?
...ocking operations from within the event thread. You should make sure these all happen in separate threads. If nothing seems the problem, use DDMS and enable the thread view. This shows all the threads in your application similar to the trace you have. Reproduce the ANR, and refresh the main thread a...
How to convert a Map to List in Java?
...nvert a Map<key,value> to a List<value> ? Just iterate over all values and insert them in a list or am I overlooking something?
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Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array))
... which makes the original array available as a list. Nothing is copied and all, only a single wrapper object is created. Operations on the list wrapper are propagated to the original array. This means that if you shuffle the list wrapper, the original array is shuffled as well, if you overwrite an e...
How to copy a file to multiple directories using the gnu cp command
...args -n 1 cp file1
Will copy file1 to dir1, dir2, and dir3. xargs will call cp 3 times to do this, see the man page for xargs for details.
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How to detect escape key press with pure JS or jQuery?
...cated as of jQuery 3.0... you should use .off
– freefaller
Apr 24 '18 at 14:07
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A route named “x” is already in the route collection. Route names must be unique. Exception with ASP
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To fix this problem I had to go into the bin folder on my project, delete all DLL files and then rebuild and this fixed the problem.
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Java ArrayList copy
...a reference) to l2. They will both refer to the same object.
Creating a shallow copy is pretty easy though:
List<Integer> newList = new ArrayList<>(oldList);
(Just as one example.)
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What is the difference between '>' and a space in CSS selectors?
...o scenarios div > span { } vs. div span { }
Here, the (space) selects all the all the <span> elements inside <div> element even if they are nested inside more than one element. The > selects all the children of <div> element but if they are not inside another element.
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Django-DB-Migrations: cannot ALTER TABLE because it has pending trigger events
...son for this maybe because you try to set a column to NOT NULL when it actually already has NULL values.
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AddRange to a Collection
...erfectly reasonable. There is a List<T>.AddRange() method that basically does just this, but requires your collection to be a concrete List<T>.
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