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How do I reverse an int array in Java?
...from Integer[]. Try it: Integer[] array = new int[5]. You'll get a compile error. This is why the Java Arrays class defines a bunch of methods for working with primitive arrays. Trying to pass an int[] to the above method will result in something like The method reverse(Object[]) in the type MakeSim...
Java: How to convert List to Map
...tring.valueOf(i % 3), i -> i));
When running this code, you'll get an error saying java.lang.IllegalStateException: Duplicate key 1. This is because 1 % 3 is the same as 4 % 3 and hence have the same key value given the key mapping function. In this case you can provide a merge operator.
Here'...
What is an invariant?
...ke sure that it actually maintains those invariants, you can avoid logical errors in your code.
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Aren't Python strings immutable? Then why does a + “ ” + b work?
...g.
If you tried a[1] = 'z' to make "dog" into "dzg", you would get the error:
TypeError: 'str' object does not support item assignment"
because strings don't support item assignment, thus they are immutable.
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Binding arrow keys in JS/jQuery
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Where is "ui" coming from? Getting " TypeError: $.ui is undefined " EDIT - I was missing JQuery UI. Got that loaded - no more error.
– a coder
Feb 8 '13 at 3:19
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How to list all Git tags?
... The rev-list related command gave me a list, but ended in an error: v0.1.0-rc1 fatal: No tags can describe '5db7534...4a94'. Try --always, or create some tags.
– not2qubit
Apr 8 '19 at 17:22
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SQL Server Installation - What is the Installation Media Folder?
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I ran into same error with 2019 RC1. This solution helped me. I found the required directory under 'C:\SQL2019RC1\RC1\Evaluation_ENU'. Once you set this as your medial library folder under the 'Options' page on the left hand side as the firs...
find: missing argument to -exec
...choargs {} +
/tmp/foo - /tmp/foo/one - /tmp/foo/two
Your command has two errors:
First, you use {};, but the ; must be a parameter of its own.
Second, the command ends at the &&. You specified “run find, and if that was successful, remove the file named {};.“. If you want to use shel...
GIT: Checkout to a specific folder
... FYI: you need to create the directory by yourself, otherwise you get this error: fatal: This operation must be run in a work tree
– timaschew
Feb 2 '16 at 11:27
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check android application is in foreground or not? [duplicate]
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@user370305's answer is error prone and discouraged by Android OS Developers (check https://groups.google.com/forum/#!msg/android-developers/zH-2bovZSLg/L2YM8Z1N-HwJ)
There is a much more simpler approach:
On a BaseActivity that all Activities ext...